Reaction of diborane with benzoxazole and its sulphur and selenium analogues. A novel rearrangement to benzoxazaboroles, benzothiazaboroles, and benzoselenazaboroles

Abstract
Reaction of B2H6 with the benzo-fused heteroaromatic compounds (1a–d) produces the boroles (2a–d)via a rearrangement in which BH3 adduct formation is the first step.

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