反应详情

5.7 g (51 mmol) of thionyl chloride were added dropwise at room temperature to a solution of 13.0 g (41 mmol) of 2-chloro-3-(5-methyl-4,5-dihydroisoxazol-3-yl)-4-methylsulfonylbenzoic acid, 1 ml of dimethylformamide and 250 ml of dry toluene. The mixture was subsequently refluxed until the reaction was complete. After cooling, the solvent was distilled off. This gave 14.2 g of 2-chloro-3-(5-methyl-4,5-dihydroisoxazol-3-yl)-4-methyl-benzoyl chloride in quantitative yield.

1. temperatureThe mixture was subsequently refluxed until the reaction
2. temperatureAfter cooling
3. distillationthe solvent was distilled off