Synthesis of closo-1,2-H2C2B8Me8 and 1,2-H2C2B8Me7X (X = I and OTf) Dicarbaboranes and Their Rearrangement Reactions

0502083 - ÚACH 2020 RIV US eng J - Journal Article
Bakardjiev, Mario - Růžička, A. - Růžičková, Z. - Tok, Oleg L. - Holub, Josef - Hnyk, Drahomír - Fanfrlík, Jindřich - Štíbr, Bohumil
Synthesis of closo-1,2-H2C2B8Me8 and 1,2-H2C2B8Me7X (X = I and OTf) Dicarbaboranes and Their Rearrangement Reactions.
Inorganic Chemistry. Roč. 58, č. 4 (2019), s. 2865-2871. ISSN 0020-1669. E-ISSN 1520-510X
R&D Projects: GA ČR(CZ) GA16-01618S
Institutional support: RVO:61388980 ; RVO:61388963
Keywords : dicarbaboranes
OECD category: Inorganic and nuclear chemistry; Physical chemistry (UOCHB-X)
Impact factor: 4.825, year: 2019
Method of publishing: Limited access
https://pubs.acs.org/doi/10.1021/acs.inorgchem.8b03550

Methyl-camouflaged dicarbaboranes closo-1,2- and 1,10-H 2 C 2 B 8 Me 8 have been prepared in high yields either from nido-5,6-H 2 C 2 B 8 H 10 or closo-1,2-H 2 C 2 B 8 H 8 via electrophilic methylation reactions and cluster-rearrangement methods. Prepared were also monosubstituted derivatives of general formulation closo-H 2 C 2 B 8 Me 7X (X = I or OTf). The permethylated compounds exhibit extreme air stability in comparison to unprotected counterparts as a consequence of rigid, egg-shaped hydrocarbon structures incorporating inner C 2 B 8 carborane scaffolding. The structures of all compounds isolated were confirmed unambiguously by multinuclear ( 11 B, 1 H, 13 C, and 19 F) NMR measurements, supported by X-ray diffraction analyses and geometry optimization methods on several compounds.
Permanent Link: http://hdl.handle.net/11104/0294031


Research data: ACS publications, CCDC