One-pot, three-step preparation of alkyl and aryl alkylcarbamates from S-methyl N-alkylthiocarbamates.

[摘要]：A general procedure for the synthesis of alkyl and aryl alkylcarbamates starting from the corresponding S-Me N-alkylthiocarbamates is described. This procedure consists of 3 steps that are carried out in a 1-pot fashion, without isolating the intermediate N-alkylcarbamoyl chlorides or alkyl isocyanates. All the target products were obtained in high yields (16 examples, av. yield 91%). The recovery of a co-product of industrial interest, Me2S2, was obsd. in a half mole amt. for each mole of thiocarbamate, with complete exploitation of the reagent. The alkyl isocyanates, if required, can also be isolated in high yields.

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