Process for the preparation of urethanes

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

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560 25, C07C125065, C07C125073

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active

047090731

ABSTRACT:
A process for preparing urethanes by reacting a solution of a nitrogen-containing organic compound and a hydroxyl-containing organic compound with carbon monoxide in the presence of a catalyst comprising rhodium, as a metal or compound, and essentially free of redox-active metal halide components is disclosed. In the process of this invention, the rate of conversion and selectivity to urethane is increased by providing a primary amine in the reaction solution.

REFERENCES:
patent: 3338956 (1967-08-01), Mountfield
patent: 3993685 (1976-11-01), Zajacek et al.
patent: 4178455 (1979-12-01), Hirai et al.
patent: 4297501 (1981-10-01), Becker et al.
patent: 4491670 (1985-01-01), Bhaduri et al.
patent: 4600793 (1986-07-01), Grate et al.

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