Direct oximation of ketones

Details Direct oximation of ketones Direct oximation of ketones

1978-04-11

1979-08-07

Schwartz, Gerald A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C13104, C07C13100

Patent

active

041637569

ABSTRACT:
Ammonia, oxygen e.g., as air, and a ketone react in contact with a catalyst such as porous, amorphous silica or alumina which may or may not have a coating to form an oxime, at temperatures such as 50.degree.-500.degree. C. The oximes have known utilities, including uses as oxidation inhibitors and as intermediates for production of amides. In particular, when the ketone is cyclohexanone, the cyclohexanone oxime in the reaction product can further be converted to the cyclic amide, caprolactam, e.g. by contacting the product with an aluminosilicate catalyst having average pore diameter of at least 7 angstroms, especially a molecular sieve, suitably downstream in the same reaction vessel. Caprolactam is the monomer starting material for nylon 6.

REFERENCES:
patent: 3503958 (1970-03-01), Landis
Knauss, Z. Phys. Chem., Part B., vol. 39, No. 2, pp. 83-100, (1938).
Kirk-Othner, Encyclopedia of Chem. Technology, vol. 11, pp. 494-495, (1966).
Knauss et al., Z. Phys. Chem., Part B., vol. 45, No. 1, pp. 1-18, (1939).
Chem. Abstr., vol. 34, col. 931(8), (1940).
Chem. Abstr., vol. 32, col. 4865(4), (1938).
Chem. Abstr., vol. 45, col. 29(g), (1951).
Chem. Abstr., vol. 41, col. 1945(b), (1947).

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