Document Type and Number:
Japanese Patent JPS643143
Kind Code:
B2
Abstract:
A process for the preparation of an aromatic urethane by the reaction in solution of an aromatic nitro compound or aromatic amine in the presence of an oxidation agent, with a hydroxyl compound and carbon monoxide in the presence of a noble metal catalyst, the improvement which comprises (a) treating the reaction solution, containing the noble metal catalyst, after the urethane formation is complete, with hydrogen (b) separating the noble metal in elementary form from the reaction solution, and (c) reusing the noble metal, together with a hydrohalic acid, as a catalyst.
Inventors:
FURANTSU MERUGAA
FURIIDORIHI TOAE
FURIIDORIHI TOAE
Application Number:
JP15712980A
Publication Date:
January 19, 1989
Filing Date:
November 10, 1980
Export Citation:
Assignee:
BEE AA ESU EFU AG
International Classes:
B01J38/00; B01J27/13; B01J27/32; C07B61/00; C07C67/00; C07C239/00; C07C269/04
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