Lewis Acid-Catalyzed Diastereoselective Hydroarylation of Benzylidene Malonic Esters
作者:Shaofeng Duan、Ranjan Jana、Jon A. Tunge
DOI:10.1021/jo900367g
日期:2009.6.19
Herein we report that simple Lewis acids catalyze the hydroarylation of benzylidene malonates with phenols. Ultimately, 3,4-disubstituted dihydrocournarins are obtained via a hydroarylation-lactonization sequence. Moreover, the dihydrocoumarins are formed with a high degree of diastereoselectivity favoring the trans stereoisomer.