Catalytic Reduction of 4<i>H</i>-Cyclopenta[<i>def</i>]phenanthrene under Mild Conditions
作者:Masahiro Minabe、Y\={o}ji Yamamoto、Masaaki Yoshida、Katsuko Nakada、Kazuo Suzuki
DOI:10.1246/bcsj.57.725
日期:1984.3
The catalytic hydrogenation of 4H-cyclopenta[def]phenanthrene over Raney nickel afforded 8,9-dihydro-4H-cyclopenta[def]phenanthrene and 1,2,3,3a-tetrahydro derivative. Under these conditions, di- and tetrahydro compounds were reduced into two diastereomers, cis-3a-cis-9a- and trans-3a-cis-9a-1,2,3,3a,8,9,9a,9b-octahydro-4H-cyclopenta[def]phenanthrene. The reduction over palladium gave a dihydro compound
4H-环戊二[def]菲在阮内镍上的催化氢化得到8,9-二氢-4H-环戊二[def]菲和1,2,3,3a-四氢衍生物。在这些条件下,二氢和四氢化合物被还原成两种非对映异构体,cis-3a-cis-9a- 和 trans-3a-cis-9a-1,2,3,3a,8,9,9a,9b-octahydro- 4H-环戊二烯[def]菲。在钯上还原得到二氢化合物和铂催化剂,提供与在阮内镍上得到的产物类似的产物。