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Redistribution reactions in boron trihalide adducts of carboxylic esters. Mixed boron trihalide adducts and difluoroboron cations

Authors
Journal
Inorganica Chimica Acta
0020-1693
Publisher
Elsevier
Publication Date
Volume
49
Identifiers
DOI: 10.1016/s0020-1693(00)90459-6

Abstract

Abstract Boron trihalide adducts of acetate and benzoate esters readily exchange halogen to form mixed boron trihalide adducts D·BF nCl 3−n (n = 0–3). Benzoate esters, but not acetate esters, also form difluoroboron cations D 2BF + 2, probably by displacement of chloride ion from the BF 2Cl adducts. In esterBF 3BBr 3 systems reaction of the bromine-containing adducts is competetive with halogen redistrubution; a major decomposition product is the D 2BF + 2 ion, in accord with bromide ion being a better leaving group than chloride ion.

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