A process for the preparation of 2-cyanoimino-1,3-thiazolidine

Details A process for the preparation of 2-cyanoimino-1,3-thiazolidine A process for the preparation of 2-cyanoimino-1,3-thiazolidine

C - Chemistry, Metallurgy

07

D

C07D 277/18 (2006.01)

Patent

CA 2714027

The present invention relates to a process for the preparation of substantially pure 2--cyanoimino-1, 3-thiazolidine of Formula-I (see formula I) by cyclization of dimethyl N-cyanoiminodithiocarbonate with 2-aminoethanethiol or the salt thereof in the presence of an alkali metal alkoxide. Further the present invention provides a process for the preparation of substantially pure 2-cyanoimino-1, 3- thiazolidine of Formula-I by cyclization of dimethyl N-cyanoiminodithiocarbonate with 2-aminoethanethiol or the salt thereof in the presence of aqueous ammonia.

Cette invention concerne un procédé de préparation de 2-cyanoimino-1,3-thiazolidine sensiblement pure de formule (I) par cyclisation de diméthyl N-cyanoimino-dithiocarbonate avec du 2-aminoéthanethiol ou son sel en présence dun alcoxyde de métal alcalin. Linvention concerne par ailleurs un procédé de préparation de 2-cyanoimino-1,3-thiazolidine sensiblement pure de formule (I) par cyclisation de diméthyl N-cyanoimino-dithiocarbonate avec du 2-aminoéthanethiol ou son sel en présence dammoniaque aqueuse.

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