Process for the manufacture of 2-hydroxy-3-methylcyclopent-2-ene

Details Process for the manufacture of 2-hydroxy-3-methylcyclopent-2-ene Process for the manufacture of 2-hydroxy-3-methylcyclopent-2-ene

1997-09-26

1999-01-05

Geist, Gary

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

Organic compounds

Oxygen containing

568355, 560122, C07C 49105

Patent

active

058565825

ABSTRACT:
A process for the manufacture of 2-hydroxy-3-methylcyclopent-2-ene-1-one, in which an ester of alpha-methyl glutaric acid and an ester of oxalic acid react in a polar aprotic solvent in the presence of an alkali metal alkoxide to form an intermediate compound which, after removal of said polar aprotic solvent and alcohols formed in the reaction, is hydrolyzed and decarboxylated to form said 2-hydroxy-3-methycyclopent-2-ene-1-one.

REFERENCES:
patent: 3922296 (1975-11-01), McFearin, Jr.
patent: 4007216 (1977-02-01), McFearin, Jr.
patent: 4168280 (1979-09-01), Nash

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