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Overcoming the Limitations of the Morita−Baylis−Hillman Reaction: A Rapid and General Synthesis of α-Alkenyl-β′-hydroxy Thioesters

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journal contribution
posted on 06.11.2008, 00:00 authored by Emily Tarsis, Anna Gromova, Daniel Lim, Guoqiang Zhou, Don M. Coltart
Acryloyl chlorides, aldehydes, and PhSLi undergo a direct aldol cascade sequence in the presence of MgBr2·OEt2 via in situ derived thioester enolates, which is followed by oxidative elimination to give α-alkenyl-β′-hydroxy thioesters. Overall, the procedure is rapid, efficient, and generally applicable, even to β-substituted acryloyl chlorides, thus providing an alternative to the Morita−Baylis−Hillman reaction with substantially greater synthetic scope and utility.

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