Regio- and Stereocontrol Elements in Rh(II)-Catalyzed Intramolecular C−H Insertion of α-Diazo-α-(phenylsulfonyl)acetamides
作者:Cheol Hwan Yoon、Michael J. Zaworotko、Brian Moulton、Kyung Woon Jung
DOI:10.1021/ol016647l
日期:2001.11.1
see text]. Intramolecular C-H insertion reaction of alpha-diazo-alpha-(phenylsulfonyl)acetamides proceeded with high regio- and stereoselectivities to afford highly functionalized gamma-lactams predominantly or exclusively. The high regioselectivity was attributed to the use of the phenylsulfonyl moiety, which altered electron density at the carbenoid center and exerted a steric effect during the insertion