Methyl dimethyldithiocarbamate is the organosulfur compound with the formula (CH3)2NC(S)SCH3. It is the one of simplest dithiocarbamic esters. It is a white volatile solid that is poorly soluble in water but soluble in many organic solvents. It was once used as a pesticide. Methyl dimethyldithiocarbamate can be prepared by methylation of salts of dimethyldithiocarbamate:
(CH3)2NCS−2Na+ + (CH3O)2SO2 → (CH3)2NC(S)SCH3 + CH3OSO−3Na+ It can also be prepared by the reaction of a tetramethylthiuram disulfide with methyl Grignard reagents:
[(CH3)2NC(S)S]2 + CH3MgBr → (CH3)2NC(S)SCH3 + (CH3)2NCS2MgBr
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