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Synthesis and Fluxional Behavior of New "Haevy Fluorous" Cyclopentadienes.

SYSNO ASEP	0341109
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Synthesis and Fluxional Behavior of New "Haevy Fluorous" Cyclopentadienes.
Author(s)	Červenková Šťastná, Lucie (UCHP-M)_{RID, ORCID, SAI} Čermák, Jan (UCHP-M)_{RID, ORCID, SAI} Cuřínová, Petra (UCHP-M)_{RID, SAI, ORCID} Sýkora, Jan (UCHP-M)_{RID, ORCID, SAI}
Source Title	Journal of Organometallic Chemistry. - : Elsevier - ISSN 0022-328X Roč. 695, č. 4 (2010), s. 537-545
Number of pages	9 s.
Language	eng - English
Country	CH - Switzerland
Keywords	heavy fluorous ; cyclopentadiene ; polyfluoroalkylsilane
Subject RIV	CC - Organic Chemistry
R&D Projects	IAA400720706 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	LC06070 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z40720504 - UCHP-M (2005-2011)
UT WOS	000274285200009
DOI	10.1016/j.jorganchem.2009.11.021
Annotation	The new heavy fluorous cyclopentadienes C5H6-n[M(C2H4C6F13)3]n (M = Si, n = 1 (3); n = 2 (4) and M = Sn, n = 1 (10)) were synthesized by reaction of cyclopentadienyl lithium with BrSi(C2H4C6F13)3 (2) or BrSn(C2H4C6F13)3. Fluorous cyclopentadienes prepared in this manner contain three or six C6F13 groups, which significantly increase their solubility in perfluorinated solvents. They also provide intermediates for titanium complexes suitable for fluorous biphase catalysis. All three isomers of silylcyclopentadienes 3 and 4 were identified and fully characterized by two dimensional NMR spectroscopy, which was performed at low temperature. The allylic isomers 3a and 4a undergo degenerate metallotropic rearrangement. This fluxional behaviour was compared with the behaviour of previously prepared cyclopentadienes 6 and 7 (C5H6-n[SiMe2(C2H4C8F17)]n where n = 1, 2, respectively).
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2010

Number of the records: 1