Method of manufacturing aromatic urethane and intermediate produ

Details Method of manufacturing aromatic urethane and intermediate produ Method of manufacturing aromatic urethane and intermediate produ

1989-10-12

1992-12-01

Lone, Werren B.

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

Organic compounds

Carboxylic acid esters

546 48, 546 55, 546308, 546309, 560 12, 560 25, 560 27, 560 28, 560 30, 560 31, 560 32, 560 48, 564 48, 564 55, C07C125065, C07C125067, C07C125073, C07C125075

Patent

active

RE0341371

ABSTRACT:
The present invention relates to a method of manufacturing aromatic urethane, an aromatic mononitro-compound, an aromatic primary amine, and carbon monoxide being reacted using a catalyst containing a platinum group metal-containing compound as a major constituent to prepare N,N'-di-substituted urea. The resultant N,N'-di-substituted urea is reacted with a hydroxyl group-containing organic compound to prepare an aromatic primary amine and aromatic urethane, and the aromatic primary amine is separated to obtain aromatic urethane.

REFERENCES:
patent: 2409712 (1941-10-01), Schweitzer
patent: 2871259 (1959-01-01), Levy
patent: 4178455 (1979-12-01), Hirai et al.
patent: 4491670 (1985-01-01), Bhaduri et al.
patent: 4600793 (1986-03-01), Grate et al.
patent: 4603216 (1986-07-01), Grate
patent: 4678856 (1989-07-01), Ikariya

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