Dimerization of 3,4-Disubstituted Cinnamic Acids and Esters
作者:Emile Al-Farhan、Philip M. Keehn、Robert Stevenson
DOI:10.1055/s-1992-26278
日期:——
Cinnamic (3-phenylpropenoic) acids and esters bearing hydroxy and/or alkoxy groups at C-3 and C-4 on the benzene ring, 1, undergo cyclodimerization on treatment with trifluoroacetic acid to yield the corresponding [t-3-aryl-c-2-carboxy [or alkoxycarbonyl]-r-1-indanyl]acetic acids or esters 2.