Lithiated 2-buten-4-olide was found to react with aromatic aldehydes regioselectively at gamma-position to provide 4-(1-aryl-1-hydroxymethyl)-2-buten-4-olides which could be readily converted into the corresponding (Z)-gamma-arylidenebutenolides. (C) 1998 Elsevier Science Ltd. All rights reserved.
Mukaiyama Aldol Reactions Catalyzed by a Trimeric Organo Aluminum(III) Alkoxide
作者:So Han Kim、Sungwoo Yoon、Youngjo Kim、John G. Verkade