Benzoic acid ester derivative

Details Benzoic acid ester derivative Benzoic acid ester derivative

1979-05-11

1980-04-29

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

C07C 6978

Patent

active

042007631

ABSTRACT:
Isopropylphenyl esters are converted to di- or tri-hydric phenols via a novel autoxidation of the esters at high conversion rates to the corresponding hydroperoxyisopropylphenyl esters in the presence of a catalyst combination comprising at least two members selected from the group consisting of (i) a metal phthalocyanine; (ii) a di-tertiary alkyl peroxide; and (iii) a tertiary alkyl hydroperoxide.
Rearrangement of the hydroperoxyisopropylphenyl esters to the corresponding hydroxyphenyl esters and the hydrolysis of the latter compounds provides the phenols in overall yields (from the starting esters) heretofore not obtainable. Novel bis(hydroperoxyisopropylphenyl)carbonates are described which are attractive intermediates for the intermediate bisphenol carbonate or the final hydroquinone hydrolysis product.

REFERENCES:
patent: 2773906 (1956-12-01), Emerson
patent: 2862973 (1958-12-01), Winkler et al.
patent: 2954405 (1960-09-01), Hock et al.
patent: 3028410 (1962-04-01), Zimmer
patent: 3402205 (1968-09-01), Gregory
patent: 3634328 (1972-01-01), Brownstein
patent: 3666815 (1972-05-01), Scheltus

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