Synthesis of alpha-diketones

Details Synthesis of alpha-diketones Synthesis of alpha-diketones

1976-09-07

1978-08-15

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260586C, 260595, C07C 4518

Patent

active

041072103

ABSTRACT:
Alpha-diketones, such as 1-phenyl-1,2-propanedione and 1-propyl-1,2-butanedione, are prepared by reacting an acylmethyl ester of a carboxylic acid (e.g., benzoylmethyl acetate or butanoylmethyl propionate) with an aldehyde, such as formaldehyde or acetaldehyde, in the presence of an acid catalyst and water. Such alpha-diketones are also obtained by first refluxing a mixture of an alpha-haloketone and a carboxyl anion source and then reacting the mixture with an aldehyde in the presence of an acid catalyst and water.

REFERENCES:
patent: 3030416 (1962-04-01), Mikusch-Buchberg
patent: 3240811 (1966-03-01), Drysdale
patent: 3526634 (1970-09-01), Adachi et al.
Huckin et al., Can. J. of Chem., vol. 52, pp. 1379-1380, (1974).

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