| 摘要 |
The present invention relates to an efficient process for the production of alkyl and aryl carbamates of the formula, RR'N-C(O)-OR'', wherein the said process comprises reacting an amine with carbon dioxide and organic halide compound in a solvent medium (use of which is optional), in the presence of a solid metal-containing catalyst, at a pressure of 1-15 bar and temperature between 0 to 180° C., for 0.5 to 5 hrs, separating the catalyst and recovering the corresponding carbamate formed by conventional methods; R, R' and R'' are each selected independently from the group consisting of H, alkyl having 1-12 carbon atoms and aryl.
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