Synthesis of isocyanate precursors from primary formamides

Details Synthesis of isocyanate precursors from primary formamides Synthesis of isocyanate precursors from primary formamides

1991-10-24

1992-10-13

Dees, Jose G.

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

Organic compounds

Amino nitrogen containing

564 48, 564 55, 564 61, C07C27300

Patent

active

051552671

ABSTRACT:
A selective process for the production of unsymmetric carbamates and ureas is disclosed. In the process, a primary formamide is reacted with a dialkyl amine or an alcohol in the presence of a Group VIII transition metal catalyst. The unsymmetric carbamates and ureas are useful precursors to isocyanates.

REFERENCES:
patent: 3960914 (1976-06-01), Lyons
patent: 4207251 (1980-06-01), Heyboer
patent: 4537726 (1985-08-01), Rao et al.
patent: 4683329 (1987-07-01), Rao
patent: 4871871 (1989-10-01), Shawl et al.
patent: 4873364 (1989-10-01), Shawl et al.
patent: 4883908 (1989-11-01), Shawl et al.
patent: 4978779 (1990-12-01), Shawl et al.
J. Chem. Soc., Chem. Commun (1990) 549.

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