An Observation on Carboxylation of 4<i>H</i>-Cyclopenta[<i>def</i>]phenanthrene
作者:Masahiro Minabe、Keisuke Isozumi、Ken-ichi Kawai、Masaaki Yoshida
DOI:10.1246/bcsj.61.2063
日期:1988.6
Photocarboxylation of 4H-cyclopenta[def]phenanthrene by carbon dioxide in the presence of N,N-dimethylaniline in dimethyl sulfoxide afforded 8,9-dihydro-4H-cyclopenta[def]phenanthrene-8- and 2-carboxylic acid, and 4H-cyclopenta[def]phenanthrene-8-carboxylic acid. These acids were derived into methyl-4H-cyclopenta[def]phenanthrenes.