| 摘要 |
There is disclosed a process for the preparation of thiocarbamates having the following general formula: <IMAGE> wherein: R represents alkyl C1-C4 optionally substituted with one or more halogen atoms, alkenyl C2-C4 optionally substituted with one or more halogen atoms, phenyl optionally substituted with one or more halogen atoms, benzyl optionally substituted with one or more halogen atoms on the phenyl ring; R1 and R2, equal or different from one another, represent alkyl C1-C4 or cycloalkyl; consisting in reacting organic dithiocarbonates with organic carbamoyl halides, in the presence of an aqueous solution of an inorganic base and a phase transfer catalyst, at a temperature of 10 DEG to 50 DEG C. for time periods of 5 to 10 hours. The thiocarbamates obtained are used as herbicides, fungicides, etc., and in general in various fields of "fine chemicals".
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