Process for production of methyltetrahydrophthalic anhydride

Details Process for production of methyltetrahydrophthalic anhydride Process for production of methyltetrahydrophthalic anhydride

1991-10-21

1993-08-17

Page, Thurman K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549248, C07D30777

Patent

active

052370747

ABSTRACT:
This invention provides a process for producing methyltetrahydrophthalic anhydride characterized in that maleic anhydride and a C.sub.5 fraction are subjected to Diels-Alder reaction in the presence of a radical polymerization inhibitor and oxygen. According to the process of this invention, formation of gels as byproduct is substantially completely inhibited.

REFERENCES:
patent: 3927038 (1975-12-01), Liakumovich et al.
patent: 4332733 (1982-06-01), Samejima et al.
patent: 4560773 (1985-12-01), Telschow
patent: 4564687 (1986-01-01), Telschow
Parham et al. in "J.A.C.S." 75, pp. 2065-2069 (1953).
Concise and Chemical dictionary by Bennett (3rd edition), p. 390 (1974).

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