An alternate method for the synthesis of 2-aryl/alkyl-5-bromo-7-methoxy benzofurans; application to the synthesis of Egonol, Homoegonol, and analogs via Heck reaction
作者:Kishor R. More、R.S. Mali
DOI:10.1016/j.tet.2016.09.068
日期:2016.11
We herein report the general, versatile, and convenient method for the synthesis of 2-arly/alkyl-5-bromo-7-methoxy benzofurans from easily available o-Vanillin in five steps. These benzofurans was successfully converted into biological active natural products Egonol, Homoegonol, and analogous on applying Heck reaction using ethyl/methyl acrylate in the presence of palladium catalyst.
我们在此报告了在五个步骤中从容易获得的邻香兰素中合成2-芳基/烷基-5-溴-7-甲氧基苯并呋喃的通用,通用和方便的方法。这些苯并呋喃已成功转化为生物活性天然产物Egonol,Homoegonol,并且类似于在钯催化剂存在下使用乙基丙烯酸乙酯/丙烯酸甲酯进行的Heck反应。