Process for preparation of urethanes

Details Process for preparation of urethanes Process for preparation of urethanes

1985-03-04

1986-12-16

Helfin, Bernard

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

Organic compounds

Carboxylic acid esters

560 25, 560 27, 560 28, 560 29, 560 30, 560115, 560157, 560158, C07C125065, C07C125073, C07C125077

Patent

active

046298045

ABSTRACT:
This invention relates to 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 ruthenium catalyst. The selectivity of this process is increased by the use of methanol instead of various other alkanols, e.g. ethanol. Preferably the catalyst is a halide-free ruthenium catalyst, e.g. a ruthenium carbonyl complex.

REFERENCES:
patent: 4474978 (1984-10-01), Drent et al.
patent: 4491670 (1985-01-01), Bhaduri et al.

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