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Chiral Heterodisulfoxide Ligands in Rhodium-Catalyzed Asymmetric 1,4-Addition of Arylboronic Acids to Chromenones

✍ Scribed by Fuzhong Han; Guihua Chen; Xiangyang Zhang; Jian Liao

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 379 KB
Volume: 2011
Category: Article
ISSN: 1434-193X
DOI: 10.1002/ejoc.201100387

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✦ Synopsis

Abstract

A new family of benzene‐based chiral heterodisulfoxide ligands L1–L5 was synthesized in a single step. These disulfoxide ligands were applied in the rhodium‐catalyzed asymmetric 1,4‐addition of arylboronic acids to chromenones. The addition of diverse arylboronic acids to chromenones proceeds smoothly in up to 70 % yield with up to 95 % ee.

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