References

[1] For excellent discussion on the beginnings of organic photochemistry, see: (a) Roth HD. The beginnings of organic photochemistry. Angew Chem Int Ed Engl. 1989;28:1193–207. For a visionary address on the future of photochemistry, see: (b) Ciamician G. The photochemistry of the future. Science 1912;36:385–94.10.1002/anie.198911931Search in Google Scholar

[2] (a) Klán P, Wirz J. Photochemistry of organic compounds: from concepts to practice. Chichester: Wiley, 2009. (b) Turro NJ, Ramamurthy V, Scaiano JC. Modern molecular photochemistry of organic molecules. Herndon, USA: University Science Books, 2010.10.1002/9781444300017Search in Google Scholar

[3] For selected reviews on photocatalytic formation of important bonds in organic chemistry, see: (a) Fagnoni M, Dondi D, Ravelli D, Albini A. Photocatalysis for the formation of the C−C bond. Chem Rev. 2007;107:2725–56. (b) Hoffmann N. Photochemical reactions as key steps in organic synthesis. Chem Rev. 2008;108:1052–103. (c) Svoboda J, König B. Templated photochemistry: toward catalysts enhancing the efficiency and selectivity of photoreactions in homogeneous solutions. Chem Rev. 2006;106:5413–30. (d) Bach T. Stereoselective intermolecular [2 + 2]-photocycloaddition reactions and their application in synthesis. Synthesis. 1998:683–703. For photochemical synthesis of fine chemicals with sunlight, see: (e) Esser P, Pohlmann B, Scharf H-D. The photochemical synthesis of fine chemicals with sunlight. Angew Chem Int Ed Engl. 1994;33:2009–23.10.1021/cr068352xSearch in Google Scholar PubMed

[4] For reviews on photoredox catalysis with visible light, see: (a) Tucker JW, Stephenson CRJ. J Org Chem. 2012;77:1617. (b) Teplý F. Photoredox catalysis by [Ru(bpy)₃]²⁺ to trigger transformations of organic molecules. Collect Czech Chem Commun. 2011;76:859. (c) Narayanam JMR, Stephenson CRJ. Visible light photoredox catalysis: applications in organic synthesis. Chem Soc Rev. 2011;40, 102–13. (d) Yoon TP, Ischay MA, Du J. Visible light photocatalysis as a greener approach to photochemical synthesis. Nat Chem. 2010;2:527–32. (e) Zeitler K. Photoredox catalysis with visible light. Angew Chem Int Ed. 2009;48:9785–9. (f) Renaud P, Leong P. A light touch catalyzes asymmetric carbon-carbon bond formation. Science. 2008;322:55–6. (g) Ravelli D, Fagnoni M. Dyes as visible light photoredox organocatalysts. ChemCatChem. 2012;4:169–71. (h) Xuan J, Xiao W-J. Visible-light photoredox catalysis. Angew Chem Int Ed. 2012;51:6828–38. (i) Hoffmann N. Homogeneous photocatalytic reactions with organometallic and coordination compounds-perspectives for sustainable chemistry. ChemSusChem. 2012;5:352–71.10.1021/jo202538xSearch in Google Scholar PubMed

[5] Nicewicz DA, MacMillan DWC. Merging photoredox catalysis with organocatalysis: the direct asymmetric alkylation of aldehydes. Science. 2008;322:77–80.10.1126/science.1161976Search in Google Scholar PubMed PubMed Central

[6] Ischay MA, Anzovino ME, Du J, Yoon TP. Efficient visible light photocatalysis of [2+2] enone cycloadditions. J Am Chem Soc. 2008;130:12886–87.10.1021/ja805387fSearch in Google Scholar PubMed

[7] Narayanam JMR, Tucker JW, Stephenson CRJ. Electron-transfer photoredox catalysis: development of a tin-free reductive dehalogenation reaction. J Am Chem Soc. 2009;131:8756–7.10.1021/ja9033582Search in Google Scholar PubMed

[8] Neumann M, Füldner S, König B, Zeitler K. Metal-free, cooperative asymmetric organophotoredox catalysis with visible light. Angew Chem Int Ed. 2011;50:951–4.10.1002/anie.201002992Search in Google Scholar PubMed

[9] Burstall FH. Optical activity dependent on co-ordinated bivalent ruthenium. J Chem Soc. 1936;173–5.10.1039/jr9360000173Search in Google Scholar

[10] Interestingly high configurational stability of [Ru(bpy)₃]²⁺ was in stark contrast to analogous iron and nickel complexes studied previously by Blau and Werner: (a) Blau F. Űber neue organische Metallverbindungen. Monatsh Chem. 1898;19:647–89. (b) Werner A. Űber Spiegelbild-Isomerie bei Eisenverbindungen. Chem Ber. 1912;45:433–6. For configurationally stable octahedral iron complexes, see: (c) Monchaud D, Jodry JJ, Pomeranc D, Heitz V, Chambron JC, Sauvage JP, Lacour J. Ion-pair-mediated asymmetric synthesis of a configurationally stable mononuclear tris(diimine)–iron(II) complex. Angew Chem Int Ed. 2002;41:2317–19, and references therein.10.1007/BF01517438Search in Google Scholar

[11] (a) Sabbatini N, Balzani V. Photosensitized aquation of the hexacyanochromate(III) ion. Evidence against the doublet mechanism. J Am Chem Soc. 1972;94:7587–9. (b) Gafney HD, Adamson AW. Excited state Ru(bipyr)₃²⁺ as an electron-transfer reductant. J Am Chem Soc. 1972;94:8238–9. (c) Wrighton M, Markham J. Quenching of the luminescent state of tris(2,2ʹ-bipyridine)ruthenium(II) by electronic energy transfer. J Phys Chem. 1973;77:3042–4. (d) Bock CR, Meyer TJ, Whitten DG. Electron transfer quenching of the luminescent excited state of tris(2,2ʹ-bipyridine)ruthenium(II). Flash photolysis relaxation technique for measuring the rates of very rapid electron transfer reactions. J Am Chem Soc. 1974;96:4710–12. (e) Navon G, Sutin N. Mechanism of the quenching of the phosphorescence of tris(2,2ʹ-bipyridine)ruthenium(II) by some cobalt(III) and ruthenium(III) complexes. Inorg Chem. 1974;13:2159–64.10.1021/ja00776a057Search in Google Scholar

[12] For reviews, see: (a) Campagna S, Puntoriero F, Nastasi F, Bergamini G, Balzani V. Photochemistry and photophysics of coordination compounds: ruthenium. Top Curr Chem. 2007;280:117–214. (b) Juris A, Balzani V, Barigelletti F, Campagna S, Belser P, von Zelewsky A. Ru(II) polypyridine complexes: photophysics, photochemistry, electrochemistry, and chemiluminescence. Coord Chem Rev. 1988;84:85–277. (c) Kalyanasundaram K. Photophysics, photochemistry and solar energy conversion with tris(bipyridyl)ruthenium(II) and its analogues. Coord Chem Rev. 1982;46:159–244. (d) Sutin N. Light-induced electron transfer reactions. J Photochem. 1979;10:19–40. (e) Whitten DG. Photoinduced electron transfer reactions of metal complexes in solution. Acc Chem Res. 1980;13:83–90.10.1007/128_2007_133Search in Google Scholar

[13] (a) Kalyanasundaram K, Kiwi J, Gratzel M. Hydrogen evolution from water by visible light, a homogeneous three component test system for redox catalysis. Helv Chim Acta. 1978;61:2720–30.10.1002/hlca.19780610740Search in Google Scholar

[14] (a) Creutz C, Sutin N. Reaction of tris(bipyridine)ruthenium(III) with hydroxide and its application in a solar energy storage system. Proc Natl Acad Sci USA. 1975;72:2858–62. For recent reviews on utilization of solar energy, see: (b) Lewis NS, Nocera DG. Powering the planet: chemical challenges in solar energy utilization. Proc Natl Acad Sci USA. 2006;103:15729–35. (c) Balzani V, Credi A, Venturi M. Photochemical conversion of solar energy. ChemSusChem. 2008;1:26–58. For excellent overviews on various relevant environmental issues, see: (d) Armaroli N, Balzani V. The legacy of fossil fuels. Chem Asian J. 2011;6:768–84. (e) Jenck JF, Agterberg F, Droescher MJ. Products and processes for a sustainable chemical industry: a review of achievements and prospects. Green Chem. 2004;6:544–56.10.1073/pnas.72.8.2858Search in Google Scholar

[15] Ceroni P, Bergamini G, Balzani V. Old molecules, new concepts: [Ru(bpy)₃]²⁺ as a molecular encoder–decoder. Angew Chem Int Ed. 2009;48:8516–18.10.1002/anie.200904764Search in Google Scholar

[16] Hedstrand DM, Kruizinga WH, Kellogg RM. Light induced and dye accelerated reductions of phenacyl onium salts by 1,4-dihydropyridines. Tetrahedron Lett. 1978;19:1255–58.10.1016/S0040-4039(01)94515-0Search in Google Scholar

[17] Van Bergen TJ, Hedstrand DM, Kruizinga WH, Kellogg RM. Chemistry of dihydropyridines. 9. Hydride transfer from 1,4-dihydropyridines to sp³-hybridized carbon in sulfonium salts and activated halides. Studies with NAD(P)H models. J Org Chem. 1979;44:4953–62.10.1021/jo00394a044Search in Google Scholar

[18] Mashraqui SH, Kellogg RM. 3-Methyl-2,3-dihydrobenzothiazoles as reducing agent Dye enhanced photoreactions. Tetrahedron Lett. 1985;26:1453–6.10.1016/S0040-4039(00)99069-5Search in Google Scholar

[19] Pac C, Ihama M, Yasuda M, Miyauchi Y, Sakurai H. Ru(bpy)₃²⁺-mediated photoreduction of olefins with 1-benzyl-1,4-dihydronicotinamide: a mechanistic probe for electron-transfer reactions of NAD(P)H-model compounds. J Am Chem Soc. 1981;103:6495–7.10.1021/ja00411a040Search in Google Scholar

[20] Pac C, Miyauchi Y, Ishitani O, Ihama M, Yasuda M, Sakurai H. Redox-photosensitized reactions. 11. Ru(bpy)₃²⁺-photosensitized reactions of 1-benzyl-1,4-dihydronicotinamide with aryl-substituted enones, derivatives of methyl cinnamate, and substituted cinnamonitriles: electron-transfer mechanism and structure-reactivity relationships. J Org Chem. 1984;49:26–34.10.1021/jo00175a006Search in Google Scholar

[21] Ishitani O, Pac C, Sakurai H. Redox-photosensitized reactions. 10. Formation of a novel type of adduct between an NADH model and carbonyl compounds by photosensitization using Ru(bpy)₃²⁺. J Org Chem. 1983;48:2941–2.10.1021/jo00165a037Search in Google Scholar

[22] Ishitani O, Yanagida S, Takamuku S, Pac C. Redox-photosensitized reactions. 13. Ru(bpy)₃²⁺-photosensitized reactions of an NADH model, 1-benzyl-1,4-dihydronicotinamide, with aromatic carbonyl compounds and comparison with thermal reactions. J Org Chem. 1987;52:2790–6.10.1021/jo00389a027Search in Google Scholar

[23] Maidan R, Goren Z, Becker JY, Willner I. Application of multielectron charge relays in chemical and photochemical debromination processes. The role of induced disproportionation of N,N’-dioctyl-4,4ʹ-bipyridinium radical cation in two-phase systems. J Am Chem Soc. 1984;106:6217–22.10.1021/ja00333a017Search in Google Scholar

[24] Goren Z, Willner I. Photochemical and chemical reduction of vicinal dibromides via phase transfer of 4,4ʹ-bipyridinium radical: the role of radical disproportionation. J Am Chem Soc. 1983;105:7764–5.10.1021/ja00364a060Search in Google Scholar

[25] Willner I, Goren Z, Mandler D, Maidan R, Degani Y. Transformation of single-electron transfer photoproducts into multielectron charge relays: the functions of water—oil two-phase systems and enzyme catalysis. J Photochem. 1985;28:215–28.10.1016/0047-2670(85)87033-7Search in Google Scholar

[26] Maidan R, Willner I. Photochemical and chemical enzyme catalyzed debromination of meso-1,2-dibromostilbene in multiphase systems. J Am Chem Soc. 1986;107:1080–2.10.1021/ja00265a038Search in Google Scholar

[27] For a related example, see Mandler D, Willner I. Solar light induced formation of chiral 2-butanol in an enzyme-catalyzed chemical system. J Am Chem Soc. 1984;106:5352–3.10.1021/ja00330a053Search in Google Scholar

[28] Willner I, Tsfania T, Eichen Y. Photocatalyzed and electrocatalyzed reduction of vicinal dibromides and activated ketones using ruthenium(I) tris(bipyridine) as electron-transfer mediator. J Org Chem. 1990;55:2656–62.10.1021/jo00296a023Search in Google Scholar

[29] Tomioka H, Ueda K, Ohi H, Izawa Y. Photochemical and chemical reduction of nitroalkenes using viologens as an electron phase-transfer catalyst. Chem Lett. 1986;1359–62.10.1246/cl.1986.1359Search in Google Scholar

[30] Cano-Yelo H, Deronzier A. Photocatalysis of the Pschorr reaction by tris-(2,2′-bipyridyl)ruthenium(II) in the phenanthrene series. J Chem Soc Perkin Trans. 1984;2:1093–8.10.1039/P29840001093Search in Google Scholar

[31] Oxidative quenching of [Ru(bpy)₃]²⁺* with p-RC₆H₄N₂⁺ has been also studied in the context of two-compartment photoelectrochemical cells, see Cano-Yelo H, Deronzier A. Photo-oxidation of tris(2,2′-bipyridine)ruthenium(II) by para-substituted benzene diazonium salts in acetonitrile. Two-compartment photoelectrochemical cell applications. J Chem Soc Faraday Trans. 1984;1(80):3011–19.10.1039/f19848003011Search in Google Scholar

[32] Cano-Yelo H, Deronzier A. Photo-oxidation of some carbinols by the Ru(II) polypyridyl complex-aryl diazonium salt system. Tetrahedron Lett. 1984;25:5517–20.10.1016/S0040-4039(01)81614-2Search in Google Scholar

[33] Cano-Yelo H, Deronzier A. Photooxidation of alpha-phenylated alcohols by ruthenium polypyridyl complexes and aryl diazonium salts - comparison with electrochemical redox catalysis. New J Chem. 1987;11:479–85.Search in Google Scholar

[34] Hironaka K, Fukuzumi S, Tanaka T. Tris(bipyridyl)ruthenium(II)-photosensitized reaction of 1-benzyl-1,4-dihydronicotinamide with benzyl bromide. J Chem Soc Perkin Trans. 1984;2:1705–09.10.1039/p29840001705Search in Google Scholar

[35] (a) Rakshys, Jr JW.Use of ¹⁹F CIDNP in reaction mechanism studies. Evidence for the intermediacy of benzyl anion in the reaction of benzyl halides with sodium naphthalene. Tetrahedron Lett. 1971:4745–8. (b) Bank S, Bank JF. Reactions of aromatic radical anions V. Evidence for anion intermediacy in the reaction of alkyl chlorides, bromides and iodides with sodium naphthalene. Tetrahedron Lett. 1969;4533–6. (c) Kern JM, Sauvage JP. Photoassisted C–C coupling via electron transfer to benzylic halides by a bis(di-imine) copper(I) complex. J Chem Soc, Chem Commun. 1987;546–8.10.1016/S0040-4039(01)87543-2Search in Google Scholar

[36] Fukuzumi S, Mochizuki S, Tanaka T. Photocatalytic reduction of phenacyl halides by 9,10-dihydro-10-methylacridine: control between the reductive and oxidative quenching pathways of tris(bipyridine)ruthenium complex utilizing an acid catalysis. J Phys Chem. 1990;94:722–6.10.1021/j100365a039Search in Google Scholar

[37] For the initial study on acid catalysis in photoinduced electron transfer from [Ru(bpy)₃]²⁺ to substituted acetophenones, see: (a) Fukuzumi S, Ishikawa K, Hironaka K, Tanaka T. Acid catalysis in thermal and photoinduced electron-transfer reactions. J Chem Soc Perkin Trans. 1987;2:751–60. For a related study with ferrocene reductants in their ground state, see: (b) Fukuzumi S, Mochizuki S, Tanaka T. Acid-catalyzed electron-transfer processes in reduction of alpha-haloketones by an NADH model compound and ferrocene derivatives. J Am Chem Soc. 1989;111:1497–9.10.1039/p29870000751Search in Google Scholar

[38] Okada K, Okamoto K, Morita N, Okubo K, Oda M. Photosensitized decarboxylative Michael addition through N-(acyloxy)phthalimides via an electron-transfer mechanism. J Am Chem Soc. 1991;113:9401–02.10.1021/ja00024a074Search in Google Scholar

[39] Okada K, Okubo K, Morita N, Oda M. Reductive decarboxylation of N-(acyloxy)phthalimides via redox-initiated radical chain mechanism. Tetrahedron Lett. 1992;33:7377–80.10.1016/S0040-4039(00)60192-2Search in Google Scholar

[40] Okada K, Okubo K, Morita N, Oda M. Redox-mediated decarboxylative photo-phenylselenenylation of N-acyloxyphthalimides. Chem Lett. 1993;2021–24.10.1246/cl.1993.2021Search in Google Scholar

[41] Barton DHR, Csiba MA, Jaszberenyi JC. Ru(bpy)₃²⁺-mediated addition of Se-phenyl p-tolueneselenosulfonate to electron rich olefins. Tetrahedron Lett. 1994;35:2869–72.10.1016/S0040-4039(00)76646-9Search in Google Scholar

[42] Hamada T, Ishida H, Usui S, Watanabe Y, Tsumura K, Ohkubo K. A novel photocatalytic asymmetric synthesis of (R)-(+)-1,1′-bi-2-naphthol derivatives by oxidative coupling of 3-substituted-2-naphthol with Δ-[Ru(menbpy)₃]²⁺[menbpy = 4,4′-di(1R,2S,5R)-(–)-menthoxycarbonyl-2,2′-bipyridine], which possesses molecular helicity. J Chem Soc Chem Commun. 1993;909–11.10.1039/C39930000909Search in Google Scholar

[43] Hamada T, Ishida H, Usui S, Tsumura K, Ohkubo K. Enantioselective and photocatalytic oxidation of 1,1ʹ-bi-2-naphthol with a chiral ruthenium complex which includes molecular helicity. J Mol Catal. 1994;88:L1–L5.10.1016/0304-5102(93)E0271-HSearch in Google Scholar

[44] Ohkubo K, Hamada T, Ishida H. Novel enantioselective photocatalysis by chiral, helical ruthenium(II) complexes. J Chem Soc Chem Commun. 1993;1423–5.10.1039/c39930001423Search in Google Scholar

[45] Ohkubo K, Watanabe M, Ohta H, Usui S. Novel photocatalytic asymmetrical synthesis of Δ (or Λ)-[Co(acac)₃] (acac, pentane-2,4-dione) from [Co(acac)₂(H₂O)₂] and Hacac with helical ruthenium (II) complexes. J Photochem Photobiol. 1996;95:231–3.10.1016/1010-6030(95)04263-6Search in Google Scholar

[46] (a) Rau H. Asymmetric photochemistry in solution. Chem Rev. 1983;83:535–47. (b) Inoue Y. Asymmetric photochemical reactions in solution. Chem Rev. 1992;92:741–70.10.1021/cr00057a003Search in Google Scholar

[47] (a) Fancy DA, Kodadek T. Chemistry for the analysis of protein–protein interactions: rapid and efficient cross-linking triggered by long wavelength light. Proc Natl Acad Sci USA. 1999;96:6020–4. (b) Fancy DA, Denison C, Kim K, Xie Y, Holdeman T, Amini F, Kodadek T. Scope, limitations and mechanistic aspects of the photo-induced cross-linking of proteins by water-soluble metal complexes. Chem Biol. 2000;7:697–708.10.1073/pnas.96.11.6020Search in Google Scholar PubMed PubMed Central

[48] Amini F, Denison C, Lin H-J, Kuo L, Kodadek T. Using oxidative crosslinking and proximity labeling to quantitatively characterize protein-protein and protein-peptide complexes. Chem Biol. 2003;10:1115–27.10.1016/j.chembiol.2003.11.001Search in Google Scholar PubMed

[49] (a) Barton JK, Olmon ED, Sontz PA. Metal complexes for DNA-mediated charge transport. Coord Chem Rev. 2011;255:619–34. (b) Herman L, Ghosh S, Defrancq E, Kirsch-De Mesmaeker A. Ru(II) complexes and light: molecular tools for biomolecules. J Phys Org Chem. 2008;21:670–81. (c) Szaciłowski K, Macyk W, Drzewiecka-Matuszek A, Brindell M, Stochel G. Bioinorganic photochemistry: frontiers and mechanisms. Chem Rev. 2005;105:2647–94.10.1016/j.ccr.2010.09.002Search in Google Scholar PubMed PubMed Central

[50] Ischay MA, Lu X, Yoon TP. [2+2] Cycloadditions by oxidative visible light photocatalysis. J Am Chem Soc. 2010;132:8572–74.10.1021/ja103934ySearch in Google Scholar PubMed PubMed Central

[51] Cherevatskaya M, Neumann M, Füldner S, Harlander C, Kümmel S, Dankesreiter S, et al. Visible-light-promoted stereoselective alkylation by combining heterogeneous photocatalysis with organocatalysis. Angew Chem Int Ed. 2012;51:4062–66.10.1002/anie.201108721Search in Google Scholar PubMed

[52] Hari DP, Schroll P, König B. Metal-free, visible-light-mediated direct C–H arylation of heteroarenes with aryl diazonium salts. J Am Chem Soc. 2012;134:2958–61.10.1021/ja212099rSearch in Google Scholar PubMed

[53] Pirtsch M, Paria S, Matsuno T, Isobe H, Reiser O. [Cu(dap)₂Cl] as an efficient visible-light-driven photoredox catalyst in carbon–carbon bond-forming reactions. Chem Eur J. 2012;18:7336–40.10.1002/chem.201200967Search in Google Scholar PubMed

[54] Hernandez-Perez AC, Vlassova A, Collins SK. Toward a visible light mediated photocyclization: cu-based sensitizers for the synthesis of [5]helicene. Org Lett. 2012;14:2988–91.10.1021/ol300983bSearch in Google Scholar PubMed

[55] Yoon H-S, Ho X-H, Jang J, Lee H-J, Kim S-J, Jang H-Y. N719 dye-sensitized organophotocatalysis: enantioselective tandem Michael addition/oxyamination of aldehydes. Org Lett. 2012;14:3272–5.10.1021/ol3011858Search in Google Scholar PubMed

[56] DiRocco DA, Rovis T. Catalytic asymmetric α-acylation of tertiary amines mediated by a dual catalysis mode: N-heterocyclic carbene and photoredox catalysis. J Am Chem Soc. 2012;134:8094–7.10.1021/ja3030164Search in Google Scholar PubMed PubMed Central

[57] Dadová J, Svobodová E, Sikorski M, König B, Cibulka R. Photooxidation of sulfides to sulfoxides mediated by tetra-O-acetylriboflavin and visible light. Chem Cat Chem. 2012;4:620–3.10.1002/cctc.201100372Search in Google Scholar

[58] Mitkina T, Stanglmair C, Setzer W, Gruber M, Kisch H, König B. Visible light mediated homo- and heterocoupling of benzyl alcohols and benzyl amines on polycrystalline cadmium sulfide. Org Biomol Chem. 2012;10:3556–61.10.1039/c2ob07053gSearch in Google Scholar PubMed

[59] Hari DP, König B. Eosin Y catalyzed visible light oxidative C–C and C–P bond formation. Org Lett. 2011;13:3852–5.10.1021/ol201376vSearch in Google Scholar PubMed

[60] Füldner S, Mild R, Siegmund HI, Schroeder JA, Gruber M, König B. Green-light photocatalytic reduction using dye-sensitized TiO₂ and transition metal nanoparticles. Green Chem. 2010;400–06.10.1002/chin.201031043Search in Google Scholar

[61] McNally A, Prier CK, MacMillan DWC. Discovery of an α-amino C–H arylation reaction using the strategy of accelerated serendipity. Science. 2011;334:1114–17.10.1126/science.1213920Search in Google Scholar PubMed PubMed Central

[62] Miyake Y, Nakajima K, Nishibayashi Y. Visible-light-mediated utilization of α-aminoalkyl radicals: addition to electron-deficient alkenes using photoredox catalysts. J Am Chem Soc. 2012;134:3338–41.10.1021/ja211770ySearch in Google Scholar PubMed

[63] Rueping M, Leonori D, Poisson T. Visible light mediated azomethine ylide formation-photoredox catalyzed [3+2] cycloadditions. Chem Commun. 2011;47:9615–17.10.1039/c1cc13660gSearch in Google Scholar PubMed

[64] Rueping M, Zhu S-Q, Koenigs RM. Visible-light photoredox catalyzed oxidative Strecker reaction. Chem Commun. 2011;47:12709–11.10.1039/c1cc15643hSearch in Google Scholar PubMed

[65] Schroll P, Hari DP, König B. Photocatalytic arylation of alkenes, alkynes and enones with diazonium salts. Chem Open. 2012;1:130–3.10.1002/open.201200011Search in Google Scholar PubMed PubMed Central

[66] Maji T, Karmakar A, Reiser O. Visible-light photoredox catalysis: dehalogenation of vicinal dibromo-, α-halo-, and α,α-dibromocarbonyl compounds. J Org Chem. 2011;76:736–9.10.1021/jo102239xSearch in Google Scholar PubMed

[67] Zou Y-Q, Chen J-R, Liu X-P, Lu L-Q, Davis RL, Jørgensen KA, et al. Highly efficient aerobic oxidative hydroxylation of arylboronic acids: photoredox catalysis using visible light. Angew Chem Int Ed. 2012;51:784–8.10.1002/anie.201107028Search in Google Scholar PubMed

[68] Xuan J, Feng Z-J, Duan S-W, Xiao W-J. Room temperature synthesis of isoquino[2,1-a][3,1]oxazine and isoquino[2,1-a]pyrimidine derivatives via visible light photoredox catalysis. RSC Adv. 2012;2:4065–8.10.1039/c2ra20403gSearch in Google Scholar

[69] Zou Y-Q, Duan S-W, Meng X-G, Hu X-Q, Gao S, Chen J-R, et al. Visible light induced intermolecular [2+2]-cycloaddition reactions of 3-ylideneoxindoles through energy transfer pathway. Tetrahedron. 2012. DOI: 10.1016/j.tet.2012.06.011Search in Google Scholar

[70] Su Y-J, Zhang L-R, Jiao N. Utilization of natural sunlight and air in the aerobic oxidation of benzyl halides. Org Lett. 2011;13:2168–71.10.1021/ol2002013Search in Google Scholar PubMed

[71] Cheng Y, Yang J, Qu Y, Li P. Aerobic visible-light photoredox radical C-H functionalization: catalytic synthesis of 2-substituted benzothiazoles. Org Lett. 2012;14:98–101.10.1021/ol2028866Search in Google Scholar PubMed

[72] Tucker JW, Stephenson CRJ. Tandem visible light-mediated radical cyclization-divinylcyclopropane rearrangement to tricyclic pyrrolidinones. Org Lett. 2011;13:5468–71.10.1021/ol202178tSearch in Google Scholar PubMed

[73] Dai C, Meschini F, Narayanam JMR, Stephenson CRJ. Friedel–Crafts amidoalkylation via thermolysis and oxidative photocatalysis. J Org Chem. 2012;77:4425–31.10.1021/jo300162cSearch in Google Scholar PubMed PubMed Central

[74] Freeman DB, Furst L, Condie AG, Stephenson CRJ. Functionally diverse nucleophilic trapping of iminium intermediates generated utilizing visible light photoredox catalysis. Org Lett. 2012;14:94–7.10.1021/ol202883vSearch in Google Scholar PubMed PubMed Central

[75] Wallentin C-J, Nguyen JD, Finkbeiner P, Stephenson CRJ. Visible light-mediated atom transfer radical addition via oxidative and reductive quenching of photocatalysts. J Am Chem Soc. 2012;134:8875–84.10.1021/ja300798kSearch in Google Scholar PubMed

[76] Zhu M-Z, Zheng N. Synthesis. 2011: 2223–6.10.1055/s-0030-1260082Search in Google Scholar PubMed PubMed Central

[77] Zlotorzynska M, Sammis GM. Photoinduced electron-transfer-promoted redox fragmentation of N-alkoxyphthalimides. Org Lett. 2011;13:6264–7.10.1021/ol202740wSearch in Google Scholar PubMed

[78] Courant T, Masson G. Photoredox-initiated α-alkylation of imines through a three-component radical/cationic reaction. Chem Eur J. 2012;18:423–7.10.1002/chem.201103062Search in Google Scholar PubMed

[79] Rueping M, Zoller J, Fabry DC, Poscharny K, Koenigs RM, Weirich TE, et al. Light-mediated heterogeneous cross dehydrogenative coupling reactions: metal oxides as efficient, recyclable, photoredox catalysts in C-C bond-forming reactions. Chem Eur J. 2012;18:3478–81.10.1002/chem.201103242Search in Google Scholar PubMed

[80] Rueping M, Koenigs RM, Poscharny K, Fabry DC, Leonori D, Vila C. Dual catalysis: combination of photocatalytic aerobic oxidation and metal catalyzed alkynylation reactions-C-C bond formation using visible light. Chem Eur J. 2012;18:5170–4.10.1002/chem.201200050Search in Google Scholar PubMed

[81] Parrish JD, Ischay MA, Lu Z, Guo S, Peters NR, Yoon TP. Endoperoxide synthesis by photocatalytic aerobic [2 + 2 + 2] cycloadditions. Org Lett. 2012;14:1640–3.10.1021/ol300428qSearch in Google Scholar PubMed PubMed Central

[82] Lin S, Padilla CE, Ischay MA, Yoon TP. Visible light photocatalysis of intramolecular radical cation Diels–alder cycloadditions. Tetrahedron Lett. 2012;53:3073–6.10.1016/j.tetlet.2012.04.021Search in Google Scholar PubMed PubMed Central

[83] Tyson EL, Farney EP, Yoon TP. Photocatalytic [2+2] cycloadditions of enones with cleavable redox auxiliaries. Org Lett. 2012;14:1110–13.10.1021/ol3000298Search in Google Scholar PubMed PubMed Central

[84] Guillo P, Hamelin O, Batat P, Jonusauskas G, McClenaghan ND, Ménage S. Photocatalyzed sulfide oxygenation with water as the unique oxygen atom source. Inorg Chem. 2012;51:2222–30.10.1021/ic2022159Search in Google Scholar PubMed

[85] Zhao G, Yang C, Guo L, Sun H, Chen C, Xia W. Visible light-induced oxidative coupling reaction: easy access to Mannich-type products. Chem Commun. 2012;48:2337–9.10.1039/c2cc17130aSearch in Google Scholar PubMed

[86] Ju X, Liang Y, Jia P, Li W, Yu W. Synthesis of oxindoles via visible light photoredox catalysis. Org Biomol Chem. 2012;10:3556–61.10.1039/C1OB06652HSearch in Google Scholar

[87] Maity S, Zhu M-Z, Shinabery RS, Zheng N. Intermolecular [3+2] cycloaddition of cyclopropylamines with olefins by visible-light photocatalysis. Angew Chem Int Ed. 2012;51:222–6.10.1002/anie.201106162Search in Google Scholar PubMed PubMed Central

[88] Kohls P, Yadav D, Pandey G, Reiser O. Visible light photoredox catalysis: generation and addition of N-aryltetrahydroisoquinoline derived α-amine radicals to Michael acceptors. Org Lett. 2012;14:672–5.10.1021/ol202857tSearch in Google Scholar PubMed

[89] Yasu Y, Koike T, Akita M. Sunlight-driven synthesis of γ-diketones via oxidative coupling of enamines with silyl enol ethers catalyzed by [Ru(bpy)₃]²⁺. Chem Commun. 2012;48:5355–7.10.1039/c2cc31748fSearch in Google Scholar PubMed

[90] Fu W, Guo W, Zou G, Xu C. Selective trifluoromethylation and alkynylation of tetrahydroisoquinolines using visible light irradiation by Rose Bengal. J Fluor Chem. 2012;140:88–94.10.1016/j.jfluchem.2012.05.009Search in Google Scholar

[91] Ananthakrishnan R, Gazi S. [Ru(bpy)₃]²⁺ aided photocatalytic synthesis of 2-arylpyridines via Hantzsch reaction under visible irradiation and oxygen atmosphere. Catal Sci Technol. 2012;2:1463–71.10.1039/c2cy20050cSearch in Google Scholar

[92] Miyake Y, Ashida Y, Nakajima K, Nishibayashi Y. Visible-light-mediated addition of α-aminoalkyl radicals generated from α-silylamines to α,β-unsaturated carbonyl compounds. Chem Commun. 2012;48:6966–8.10.1039/c2cc32745gSearch in Google Scholar PubMed

[93] Ischay MA, Ament MS, Yoon TP. Crossed intermolecular [2 + 2] cycloaddition of styrenes by visible light photocatalysis. Chem Sci. 2012. DOI: 10.1039/C2SC20658GSearch in Google Scholar PubMed PubMed Central

[94] Cai S, Zhao X, Wang X, Liu Q, Li Z, Wang DZ. Visible-light-promoted C-C bond cleavage: photocatalytic generation of iminium ions and amino radicals. Angew Chem Int Ed. 2012. DOI: 10.1002/anie.201202880Search in Google Scholar PubMed

[95] Neumann M, Zeitler K. Application of microflow conditions to visible light photoredox catalysis. Org Lett. 2012;14:2658–61.10.1021/ol3005529Search in Google Scholar PubMed

[96] Bou-Hamdan FR, Seeberger PH. Visible-light-mediated photochemistry: accelerating Ru(bpy)₃²⁺-catalyzed reactions in continuous flow. Chem Sci. 2012;3:1612–16.10.1039/c2sc01016jSearch in Google Scholar

[97] Tucker JW, Zhang Y, Jamison TF, Stephenson CRJ. Visible-light photoredox catalysis in flow. Angew Chem Int Ed. 2012;51:4144–7.10.1002/anie.201200961Search in Google Scholar PubMed PubMed Central

[98] Andrews RS, Becker JJ, Gagné MR. A photoflow reactor for the continuous photoredox-mediated synthesis of C-glycoamino acids and C-glycolipids. Angew Chem Int Ed. 2012;51:4140–3.10.1002/anie.201200593Search in Google Scholar PubMed