Calcium(II)‐Catalyzed Alkenylation of <i>N</i>‐Acyliminiums and Related Ions with Vinylboronic Acids

Abstract

Abstract Efficient C−C bond‐forming reactions between N,O ‐acetals and vinylboronic acids were achieved via a calcium(II)‐catalyzed formation of a N ‐acyliminium intermediate or a related ion. This strategy can give a rapid access to a wide variety of alkenyl‐functionalized nitrogen‐containing compounds in good to excellent yields under simple reaction conditions. magnified image