Hydroperoxyisopropylphenyl carbonates

Details Hydroperoxyisopropylphenyl carbonates Hydroperoxyisopropylphenyl carbonates

1979-05-11

1980-05-13

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 6900

Patent

active

042028337

ABSTRACT:
Isopropylphenyl esters are converted to di- or trihydric 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
patent: 2954405 (1960-09-01), Hock
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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