Process for the manufacture of carbamates

Details Process for the manufacture of carbamates Process for the manufacture of carbamates

1979-01-29

1981-03-24

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

260465D, 252437, 252438, 2604654, 252439, 252440, 560 25, 252456, 252458, 560 26, 252459, 252460, 560 27, 252454, 252461, 560 28, 252467, 252469, 560 29, 252470, 252472, 560 30, 252471, 252476, 560 31, 560 32, 560 33, 560115, 560132, 560133, 560134, 560135, 560136, 560137, 560157, 560158, 560159, 560160, 560161, 560162, 560163, 560164, 560165, 560166, 560167, 252432, 252434, 252436, C07C125063, C07C12507

Patent

active

042582016

ABSTRACT:
A process for the production of carbamates is provided in which an organic primary or secondary amine is contacted, in the substantial absence of reactive oxygen, with a source of carbon monoxide, an organic compound containing at least one hydroxyl group and a source of sulfur, selenium or tellurium, in the presence of an effective amount of a catalyst selected from the group consisting of non-halide compounds and complexes of metals of Groups IVB, VB, VIB, VIIB, VIII, IB and IIIA of the Periodic Table. Further improved results are obtained by employing in the reaction zone at least one promoter selected from the group consisting of metals of Group IA and IIA of the Periodic Table.

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