Process for producing methylnorbornene dicarboxylic acid anhydri

Details Process for producing methylnorbornene dicarboxylic acid anhydri Process for producing methylnorbornene dicarboxylic acid anhydri

1991-03-19

1992-09-22

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549236, C07D30777

Patent

active

051498316

ABSTRACT:
Methylnorbornene dicarboxylic anhydride is produced from a C.sub.6 -C.sub.7 fraction containing 5-methylcyclopentadiene by carrying out the reaction in the presence of a maleic anhydride and a protonic acid at a temperature of 0.degree.-50.degree.C., whereby the 5-methylcyclopentadiene is isomerized to 1-MCPD and 2-MCPD which undergo a Diels-Alder reaction to form methylnorbornene dicarboxylic anhydride.

REFERENCES:
patent: 1944731 (1934-01-01), Diels et al.
Sauer, Angew, Chem. Int. Edit. vol. 6, 16, 1967.

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