Visible light photocatalytic synthesis of benzothiophenes.

Org Lett

Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany.

Published: October 2012

The photocatalytic reaction of o-methylthio-arenediazonium salts with alkynes yields substituted benzothiophenes regioselectively through a radical annulation process. Green light irradiation of eosin Y initiates the photoredox catalysis. The scope of the reaction was investigated by using various substituted diazonium salts and different alkynes.

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Source
http://dx.doi.org/10.1021/ol302517nDOI Listing

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