Trifluoromethanesulphonic acid catalysed transalkylation between tetrabromobisphenol‐a and toluene for the production of 2,6‐dibromophenol | Zendy

Effenberger Reinhard | Zendy

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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.

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