Improved Method for the Preparation of 1,1-Dimethyl-3-arylureas Using Chlorocarbonylsulfenyl Chloride |
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| Authors: | K Adeppa D C Rupainwar |
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| Institution: | U.P. Technical University , Lucknow , India |
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| Abstract: | A convenient procedure for preparing some arylureas having herbicidal properties is reported. The method has two steps: (1) reaction of arylamine with chlorocarbonylsulfenyl chloride in the presence of nonpolar solvent to produce aryl carbonylsulfenyl chloride and (2) reaction with dimethylamine in a two-phase reaction catalysed by phase-transfer catalyst to produce the corresponding aryl ureas. |
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| Keywords: | Arylureas carbonylation chlorocarbonylsulfenyl chloride isoproturon p-cumidine |
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