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Regioselective Hydroacylation of 1,3-Dienes by Cobalt Catalysis

Published Web Location

https://doi.org/10.1021/ja500268w
Abstract

We describe a cobalt-catalyzed hydroacylation of 1,3-dienes with non-chelating aldehydes. Aromatic aldehydes provide 1,4-addition products as the major isomer, while aliphatic aldehydes favor 1,2-hydroacylation products. The kinetic profile supports an oxidative cyclization mechanism involving a cobaltacycle intermediate that undergoes transformation with high regio- and stereoselectivity.

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