Premium
Trifluoromethanesulphonic acid catalysed transalkylation between tetrabromobisphenol‐a and toluene for the production of 2,6‐dibromophenol
Author(s) -
Effenberger Reinhard
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280580205
Subject(s) - transalkylation , tetrabromobisphenol a , toluene , chemistry , yield (engineering) , organic chemistry , catalysis , raw material , alkylation , materials science , fire retardant , metallurgy
The preparation of 2,6‐dibromophenol is described. This compound, useful as raw material for brominated poly(phenyleneoxide) and pyrogallol or derived pharmaceuticals/pesticides, was prepared in 80% (isolated) yield by a transalkylation reaction between tetrabromobisphenol‐A and toluene. The catalyst, trifluoromethanesulphonic acid, can be simply recovered and recycled. Perfluorinated resin sulphonic acid (NAFION‐H®, DuPont) did not effectively catalyse this transalkylation.