W. Koga
Jun 1, 1956
Citations
0
Influential Citations
2
Citations
Journal
Bulletin of the Chemical Society of Japan
Abstract
(1) By the reaction of diphenylmethane and diphenylethane with maleic anhydride in the presence of aluminium chloride, diphenyl-methane-4, 4′-di-γ-oxocrotonic acid and biben-zyl-4,4′-di-γ-oxocrotonic acid were produced, respectively. And cis and trans isomers of dimethyl esters of these acids were prepared. (2) By the reduction of the above two acids by zinc and acetic acid, diphenyl-methane-4, 4′-di-γ-oxobutyric acid and biben-zyl-4, 4′-di-γ-oxobutyric acid were prepared. (3) These saturated keto acids were reduced by amalgamated zinc in the mixture of ethanol and hydrochloric acid to diphenyl-methane-4,4′-dibutyric acid and diphenyl-ethane-4, 4′-dibutyric acid.