Process for preparing acetonin

Details Process for preparing acetonin Process for preparing acetonin

1974-10-18

1976-03-09

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D23904

Patent

active

039431347

ABSTRACT:
2,2,4,4,6-Pentamethyl-2,3,4,5-tetrahydropyrimidine, called acetonin, is prepared by reacting acetone with ammonia in the presence of an ammonium halide catalyst and in the presence of from 0.01 to 0.5 mole % (based on acetone) of a promoter selected from the group consisting of: bromine; iodine; iodine trichloride; alkali metal iodides; lithium rhodanide, bromide, nitrate and cyanide; ammonium iodide, rhodanide, bromide, nitrate and sulfide; ammonium salts of carboxylic acids and of sulfonic acids; salts of nitrogen-containing organic bases with carboxylic acids and with sulfonic acids; aliphatic amine hydroiodides; carboxylic acids; and sulfonic acids.

REFERENCES:
industrial J. Chem. 6, pp. 143-151, (1953).
Helv. Chim. Acta., 30, pp. 1114-1119, (1947).
Bradbury et al., [J.C.S.], (1947), pp. 1394-1399.

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