Copper-catalyzed oxidative aromatization of 2-cyclohexen-1-ones to phenols in the presence of catalytic hydrogen bromide under molecular oxygen
作者:Kotaro Kikushima、Yuta Nishina
DOI:10.1039/c3ra43071e
日期:——
Catalytic oxidative aromatization has been achieved using 2-cyclohexen-1-ones to obtain phenol derivatives in the presence of a catalytic amount of copper salt and aqueous HBr under molecular oxygen. The amount of HBr was successfully reduced to a catalytic quantity, and the other additive such as a ligand and an oxidant as well as inert conditions were unnecessary. Various mono-, di-, and trisubstituted
The Acid-Catalyzed Cyclization of 2,3-Dimethyl-2-phenethyl-3-cyclohexen-1-one
作者:Takenori Kusumi、Nobuo Ohno、Hiroshi Kakisawa
DOI:10.1246/bcsj.48.96
日期:1975.1
The cyclization of 2,3-dimethyl-2-phenethyl-3-cyclohexen-1-one 6a with aluminum chloride gave 4a,cis-10a-dimethyl-3,4,4a,9,10,10a-hexahydro-1 (2H)-phenanthrone 8a. The stereochemistry of the latter was established by synthesizing 4a,cis-10a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthrene 10 through Diels-Alder reaction of 3-formyl-4a,cis-8a-dimethyl-4a,5,6,7,8,8a-hexahydro-2(1H)-naphthalenone 20