Preparing aromatic urethans

Details Preparing aromatic urethans Preparing aromatic urethans

1982-01-15

1983-07-26

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 20, 560 27, 560 28, 560 29, 560 30, 560 32, 560 33, C07C125065

Patent

active

043955657

ABSTRACT:
A process for the preparation of aromatic urethans by reaction between aromatic amines and alkyl carbonates, said reaction being carried out in the presence of a catalyst composed of an alcoholate of an alkali metal or an alkaline earth metal. The reaction is caused to take place at a temperature which is variable from +50.degree. C. and +150.degree. C., in the liquid phase and with a molar ratio of the carbonate to the amine of from 10:1 to 1:10.

REFERENCES:
patent: 4268684 (1981-05-01), Gurgiolo
The Merck Index, 7th Ed. (1960) p. 1114.

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