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American Chemical Society, Organometallics, 16(33), p. 4165-4168, 2014

DOI: 10.1021/om500434r

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Synthesis of N-heterocyclic carbene stabilized catecholatoborenium cations by ligand substitution

Journal article published in 2014 by Dinh Cao Huan Do, Senthilkumar Muthaiah, Rakesh Ganguly ORCID, Dragoslav Vidović
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Ligand substitution is not a common procedure for the preparation of different borenium cations. This work demonstrates that the chloride ligands of several NHC-stabilized dichloroborenium cations [NHC·BCl2][X] (NHC = (R′C)2(NR)2C; 1, R = iPr, R′ = H; 2, R = iPr, R′ = Me; 3, R = tBu, R′ = H; X = AlCl4, B(3,5-Cl2-C6H3)4) could be replaced with a catecholato moiety to produce [NHC·Bcat][X]. According to single-crystal X-ray analyses this particular ligand exchange enhanced the Lewis acidity of the target borocations with respect to the dichloro precursors. ; ASTAR (Agency for Sci., Tech. and Research, S’pore)