Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 68, Issue 4, Pages 1591-1593Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jo0267495
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The reaction of benzofuran-2,3-dione derivatives 1 with CO and alkenes (or alkynes) results in a carbonylative [2+2+1] cycloaddition in which the ester-carbonyl group is incorporated into a two-atom assembling unit to give spirolactone derivatives 2. This reaction provides the first example of an ester-carbonyl group participating in a carbonylative cycloaddition reaction.
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