Journal
ORGANIC LETTERS
Volume 24, Issue 30, Pages 5509-5512Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.2c01810
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Funding
- Natural Sciences and Engineering Research Council of Canada
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This article describes the study on the reaction of 4-alkynyl indoles with benzylidene malonate or donor-acceptor cyclopropane in the presence of a zinc halide. The reaction proceeds via a tandem addition/Conia-ene cyclization and provides fair to excellent yields of 3,4-hexannylated or 3,4-heptannulated products.
4-Alkynyl indoles, when treated with a benzylidene malonate or a donor-acceptor cyclopropane in the presence of a zinc halide, furnished 3,4-hexannylated or 3,4-heptannulated products, respectively, in fair to excellent yields. The reaction proceeds via a tandem addition/Conia-ene cyclization.
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