Chiral Phosphoric Acid Catalyzed (4+1) Annulation of 3‐Diazooxindoles/4‐Diazooxisoquinolines with para‐Quinone Methides to Access Chiral Spiro[dihydrobenzofuran‐2,3′‐oxindoles/2,4′‐oxisoquinolines]

An asymmetric (4+1) annulation of 3‐diazooxindoles/4‐diazooxisoquinolines with para‐quinone methides, catalyzed by a chiral phosphoric acid, has been described. A wide range of spiro[dihydrobenzofuran‐2,3′‐oxindoles/2,4′‐oxisoquinoline] derivatives were afforded with excellent diastereo‐ and enantio...

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Bibliographic Details

Published in:	Advanced synthesis & catalysis Vol. 363; no. 6; pp. 1702 - 1713
Main Authors:	Wu, You‐Cai, Cui, Bao‐Dong, Long, Yan, Han, Wen‐Yong, Wan, Nan‐Wei, Yuan, Wei‐Cheng, Chen, Yong‐Zheng
Format:	Journal Article
Language:	English
Published:	Heidelberg Wiley Subscription Services, Inc 16-03-2021
Subjects:	(4+1) annulation Chemical reactions heterocyclic diazo compounds metal-free Organic chemistry organocatalysis Phosphoric acid Quinones spiro-dihydrobenzofurans
Online Access:	Get full text
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