Process for the preparation of urethanes

Details Process for the preparation of urethanes Process for the preparation of urethanes

1983-09-16

1986-07-15

Helfin, Bernard

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

Organic compounds

Carboxylic acid esters

560 24, 560 27, 560 28, 560 29, 560 30, 560 32, 560115, 560157, 560158, 560163, 560164, C07C125065, C07C125073, C07C125077

Patent

active

046007938

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 halide-free ruthenium catalyst 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: 3448140 (1969-06-01), Gamlen et al.
patent: 3993685 (1976-11-01), Zajacek et al.
patent: 4297501 (1981-10-01), Becker et al.
patent: 4474978 (1984-10-01), Drent et al.
patent: 4491670 (1985-01-01), Bhaduri et al.

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