Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1978-02-21
1979-08-14
Daus, Donald G.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
560 83, 560 86, 560100, 560102, 560105, 560109, 560254, 568768, C07C 6800
Patent
active
041645103
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 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
Daus Donald G.
Eakin M. C.
Firth Denis A.
Rose James S.
The Upjohn Company
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