Synthesis of 4<i>H</i>-Cyclopenta[<i>def</i>]phenanthrene from Fluorene Skeleton
作者:Masaaki Yoshida、Masahiro Minabe、Kazuo Suzuki
DOI:10.1246/bcsj.56.2179
日期:1983.7
4-Fluoreneacetic acid was prepared and its chloride was cyclized with AlCl3 to give 4H-cyclopenta-[def]phenanthren-8-ol accompanied by the 8,9-dione. These were both reduced to 4H-cyclopenta[def]phenanthrene: the overall yield was 40–50% from diphenic acid. The phenol was converted to acetoxy and amino substrates.