Reaction of phenols with calculated amounts of benzyltrimethylammonium tribromide or tetrabutylammonium tribromide in dichloromethane–methanol for 0.5–1 h under mild conditions gave, selectively, the objective mono-, di-, or tribromophenols in good yields.
Chandrasekharan, V.; Unnikrishnan, P.; Shah, G. D., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 12, p. 1052 - 1055
作者:Chandrasekharan, V.、Unnikrishnan, P.、Shah, G. D.、Bhattacharyya, S. C.