Preparation of carboxylic acid anhydrides

Details Preparation of carboxylic acid anhydrides Preparation of carboxylic acid anhydrides

1982-12-21

1984-10-16

Waltz, Thomas A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260545R, 260546, C07C 5156

Patent

active

044773820

ABSTRACT:
The conversion of a carboxylic acid having the formula RCOOH wherein R is a hydrocarbon group having from 1 to 20 carbon atoms to its corresponding anhydride by contacting said carboxylic acid with a salt of at least one metal selected from the group consisting of palladium, cobalt, manganese, chromium, nickel, copper, rhodium, iron and thorium at a temperature in the range of from about 120.degree. to 300.degree. C. is described.

REFERENCES:
patent: 2259895 (1941-10-01), Koenig
patent: 2730530 (1956-01-01), Ohlson et al.
patent: 3709934 (1973-01-01), Gruber et al.

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