Esprocarb is synthesised through a multi-step process typical of thiocarbamate herbicides. The production begins with the preparation of the chiral intermediate, 1,2-dimethylpropylamine, which introduces the molecule’s stereogenic centre. This amine is then reacted with ethyl chloroformate to form an N-ethylcarbamate derivative. In the next step, the carbamate undergoes thiolation using a sulfurizing agent like thiophosgene or carbon disulfide, converting it into a thiocarbamate. Finally, the thiocarbamate is alkylated with benzyl chloride to yield esprocarb.
