Journal
CHEMICAL COMMUNICATIONS
Volume 57, Issue 77, Pages 9934-9937Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc04199a
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Funding
- National Natural Science Foundation of China [21871148, 21672109]
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A phosphine-catalyzed cascade (2+3)/(2+4) cyclization reaction has been developed for the synthesis of chromeno[4,3-b]pyrrole derivatives. This method provides good yield, excellent chemoselectivity and diastereoselectivity under mild conditions, resulting in compounds containing three contiguous stereogenic centers.
A phosphine-catalyzed cascade (2+3)/(2+4) cyclization reaction of gamma-vinyl allenoates with aldimine esters has been developed to provide a series of chromeno[4,3-b]pyrrole derivatives that contain three contiguous stereogenic centers. The method gives a good yield, excellent chemoselectivity and diastereoselectivity under mild conditions.
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