Thieme Gruppe, Synthesis: Journal of Synthetic Organic Chemistry, 05(53), p. 925-932, 2020
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AbstractA general strategy for the synthesis of indolyl cyclobutanones via a tandem Brønsted acid catalyzed 2-hydroxycyclobutanone activation–indole nucleophilic addition has been exploited. The procedure leads to a wide range of 2- and 3-functionalized indole derivatives in good to high yields with broad substrate scope.