Novel process

Details Novel process Novel process

1981-01-16

1982-05-04

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

568650, 568771, 568768, 568763, 568649, 568774, 560131, 560144, C07C 4126, C07C 3760

Patent

active

043283616

ABSTRACT:
A process is disclosed for converting p-isopropenylphenol and derivatives thereof and, more particularly, oligomers of p-isopropenylphenol and derivatives thereof, to hydroquinone via monomeric intermediates [e.g. p-(2-haloisopropyl)phenol in the case of p-isopropenylphenol and oligomers thereof]. The process involves reacting the starting materials with a hydrogen halide (e.g. gaseous hydrogen chloride) in the presence of an organic solvent and subjecting the product so obtained to oxidation with hydrogen peroxide or an organic hydroperoxide.

REFERENCES:
patent: 4070392 (1978-01-01), Tresper et al.
patent: 4258219 (1981-03-01), Kato et al.

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