Aurélien Coelho, J. Behr, Jean-Luc Vasse
Jul 14, 2022
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Journal
Organic & biomolecular chemistry
Abstract
Access to 5-bromopentanal and 6-bromohexanal derivatives from Weinreb amides is described. The method relies on the sequential C-bromination/zircona-aminal hydrolysis of bis-C,O-zirconocenes, which are generated in situ from unsaturated Weinreb amides using Schwartz's reagent. Synthetic illustrations of such bromo-aldehydes, which can act as carbocycle and heterocycle precursors, are also presented.