Preparation and Photochemical Rearrangements of 2-Phenyl-2,5-cyclohexadien-1-ones. An Efficient Route to Highly Substituted Phenols
作者:Zihong Guo、Arthur G. Schultz
DOI:10.1021/ol015637h
日期:2001.4.1
[reaction: see text]. The synthesis of 2-phenyl-2,5-cyclohexadien-1-ones 1a-c and 2a-b from methyl 3-phenylbenzoate 4 and methyl 2-methoxy-5-phenylbenzoate 8 by the Birch reduction alkylation methodology is described. 1a-c and 2a-b undergo regiospecific photorearrangements at 300 nm to give tetrasubstituted phenols 14a-c and pentasubstituted phenols 18a-b, respectively. The type A photoproducts 17a-b