3163-12-0Relevant academic research and scientific papers
Halogenation Using Quaternary Ammonium Polyhalides. IV. Selective Bromination of Phenols by Use of Tetraalkylammonium Tribromides
Kajigaeshi, Shoji,Kakinami, Takaaki,Okamoto, Tsuyoshi,Nakamura, Hiroko,Fujikawa, Masahiro
, p. 4187 - 4189 (2007/10/02)
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.
Course of Aromatisation of 5-Alkyl/aryl-2-bromocyclohex-2-en-3-ol-1-ones to Corresponding 5-Alkyl/arylresorcinols
Chandrasekharan, V.,Unnikrishnan, P.,Shah, G. D.,Bhattacharyya, S. C.
, p. 1052 - 1055 (2007/10/02)
5-Alkyl/aryl-2-bromocyclohex-2-en-3-ol-1-ones on heating undergo aromatisation through dehydrobromination to the corresponding 5-substituted resorcinols.During the course of aromatisation of 2-bromo-5-methylcyclohex-2-en-3-ol-1-one (I) and 5-n-amyl-2-bromocyclohex-2-en-3-ol-1-one (II) a few intermediates have been isolated and characterised as IV, V, VI, VIII and IX.Similar studies on 2-bromo-5-phenylcyclohex-2-en-3-ol-1-one yields two structurally different products, one with no bromine (XI) and the other with bromine in position-2 (XII), besides 5-phenylresorcinol (XIII).
