Synthesis of 4-[(1R,4R)-3-Oxo-p-menthan-2-ylidenemethyl]benzoic Acid and Its Esters
作者:T. G. Drushlyak、L. A. Kutulya、N. S. Pivnenko、V. V. Vashchenko
DOI:10.1007/s11176-005-0283-1
日期:2005.4
Carbonylation of ( E )-2-(4-halobenzylidene)- p -menthan-3-ones, catalyzed by PdCl2(PPh3)2, gave a distereometric mixure of 4-[(1 R ,4 R )- and (1 R ,4 S )-3-oxo- p -menthan-2-ylidenemethyl]benzoic acids, whose reaction with phenols gave 1 R ,4 R diastereomers of the corresponding esters.
由PdCl 2(PPh 3)2催化的( E )-2-(4-卤代亚苄基)- 对 - 薄荷-3-酯的羰基化 得到4-[(1 R ,4 R )-和( 1 R ,4 S )-3-氧 代- 对- 薄荷基-2-亚苄基甲基]苯甲酸,其与酚的反应得到相应酯的1 R ,4 R 非对映异构体。