Regiospecific bromination of condensed tetralones via aryloxydifluoroborn chelates
作者:Shelagh C. Mackay、Peter N. Preston、Stephen G. Will、John O. Morley
DOI:10.1039/c39820000395
日期:——
Bromination (Br2, CCl4) of the anthracenone derivative (1b) under thermal or photochemical conditions gives the expected bromo-compound (1d) whereas photochemical bromination of the aryloxydifluoroboron complexes (2a,b) gives products (2c,d) of benzylic substitution; conversion of (2c) and (3a,b) into anthraquinone derivatives including madeirin (4) is described and extension of the regiospecific bromination