Process for the preparation of n,o-disubstituted urethanes...

Details Process for the preparation of n,o-disubstituted urethanes... Process for the preparation of n,o-disubstituted urethanes...

C - Chemistry, Metallurgy

07

D

260/468, 260/386

C07D 307/91 (2006.01)

Patent

CA 1148969

Mo-2172 LeA 19,873 A PROCESS FOR THE PREPARATION OF N,O-DISUBSTITUTED URETHANES SUITABLE AS A STARTING MATERIAL FOR THE PREPARATION OF ISOCYANATES ABSTRACT OF THE DISCLOSURE A process for the preparation of N,O-disubstituted urethanes. Primary amines and alcohols are reacted with organic compounds having carbonyl groups at 120 to 350°C. Suitable carbonyl-containing compounds include N-unsub- stituted 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. Mo-2172 LeA 19,873

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