Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1988-02-24
1990-12-18
Raymond, Richard L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549240, 549247, C07D30789
Patent
active
049787608
ABSTRACT:
A process for the preparation of halogen substituted phthalic anhydrides of the formula: ##STR1## wherein x is a halogen, by the reaction of a halogen substituted tetrahydrophthalic phthalic anhydride of the formula ##STR2## or a geminal dihalogen substituted hexahydrophthalic anhydride of the formula ##STR3## in a vapor or liquid phase while mixed with an air flow and an activated carbon catalyst at an elevated temperature.
REFERENCES:
patent: 4560772 (1985-12-01), Telschow et al.
patent: 4560773 (1985-12-01), Telschow
patent: 4709056 (1987-11-01), Cotter et al.
Ohkatsu et al, J. Japan Petrol. Inst., vol. 22 (1979), pp. 164-169.
Bergmann, J.A.C.S., vol. 64 (1942) pp. 176-177.
Russian Chemical Reviews, Nov. 1963, pp. 571-589.
Hampel et al, Glossary of Chemical Terms, 2nd Ed., Van Nostrand (1982) pp. 5 & 6.
Cookfair Arthur S.
Occidental Chemical Corporation
Raymond Richard L.
Tao James F.
LandOfFree
Preparation of halogen substituted phthalic anhydride does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation of halogen substituted phthalic anhydride, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of halogen substituted phthalic anhydride will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1426387