Manufacture of methacrylic acid and butyrolactone

Details Manufacture of methacrylic acid and butyrolactone Manufacture of methacrylic acid and butyrolactone

1975-02-25

1976-09-14

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260526N, C07D30732

Patent

active

039806707

ABSTRACT:
Methacrylic acid and butyrolactone are manufactured by hydroformylation of allyl esters of lower carboxylic acids in the presence of rhodium catalysts and inert organic solvents, followed by oxidation of the resulting formyl compounds with molecular oxygen (e.g. with air) in the presence of lower fatty acids, without prior removal of the rhodium catalysts, and elimination of the carboxylic acid from the acyloxybutyric acids formed, at from 150.degree. to 500.degree.C, using catalysts such as aluminum oxide, silicates or active charcoal.

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