A new and efficient general method for the synthesis of 2-spirobenzopyrans: First synthesis of cyclic analogues of precocene I and related compounds
作者:Suneel Y Dike、Jaysukhlal R Merchant、Niteen Y Sapre
DOI:10.1016/s0040-4020(01)86481-4
日期:1991.1
A new synthesis of spirobenzopyran has been accomplished by Friedel- Crafts reaction of various m-dihydroxybenzenes and cycloalkylidene acetic acid in the presence of a Lewis acid.