Process for the preparation of N,O-disubstituted urethanes suita

Details Process for the preparation of N,O-disubstituted urethanes suita Process for the preparation of N,O-disubstituted urethanes suita

1980-10-15

1983-06-14

Shippen, Michael L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260404, 2604654, 260938, 544164, 544322, 544332, 546312, 546335, 548163, 548361, 549461, 560 22, 560 24, 560 25, 560 27, 560 28, 560 29, 560 30, 560 31, 560 32, 560 33, 560115, 560157, 560158, 560160, 560162, 560166, 560167, C07C125065, C07C125073, C07C125077

Patent

active

043882382

ABSTRACT:
A process for the preparation of N,O-disubstituted urethanes. Primary amines and alcohols are reacted with organic compounds having carbonyl groups at 120.degree. to 350.degree. C. Suitable carbonyl-containing compounds include N-unsubstituted urethanes. N-mono-substituted, N,N'-disubstituted ureas, or polyureas may be used in combination with the N-unsubstituted urethane. The product urethanes are particularly suitable for the preparation of isocyanates.

REFERENCES:
patent: 2409712 (1946-10-01), Schweitzer
patent: 2806051 (1957-09-01), Brockway
patent: 4278805 (1981-07-01), Merger et al.

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