Process for preparing 3,4,5,6-tetrahydrophthalic anhydrides or d

Details Process for preparing 3,4,5,6-tetrahydrophthalic anhydrides or d Process for preparing 3,4,5,6-tetrahydrophthalic anhydrides or d

1979-11-21

1981-06-16

Raymond, Richard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D30789

Patent

active

042737192

ABSTRACT:
.DELTA..sup.1 -THPA or a derivative thereof is prepared by isomerizing .DELTA..sup.4 -THPA or a derivative thereof in the presence of (a) a palladium catalyst, and (b) an inorganic salt and/or a sulfur compound.

REFERENCES:
patent: 2764597 (1956-09-01), Barney
patent: 2959599 (1960-11-01), Bailey
patent: 3487092 (1969-12-01), Cheng et al.
patent: 3819658 (1974-06-01), Gormley et al.
patent: 3996249 (1976-12-01), Corson et al.
patent: 4198340 (1980-04-01), Ariga et al.

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