反应详情

100 g (0.4 mol) of 2-chloro-3-methyl-4-methylsulfonylbenzoic acid were dissolved in 1 l of methanol, and hydrogen chloride gas was introduced at reflux temperature for 5 hours. The mixture was subsequently concentrated. 88.5 g (84% of theory) of methyl 2-chloro-3-methyl-4-methylsulfonylbenzoate were obtained.

1. temperatureat reflux temperature for 5 hours
2. concentrationThe mixture was subsequently concentrated