反应详情

3-Cyclopentyloxy-4-(methylthio)benzoic acid (0.7 g) is dissolved in toluene (20 mL) and heated at 80° C. for 1 hour 30 minutes in the presence of thionyl chloride (5 mL). The reaction mixture is concentrated to give 3-cyclopentyloxy-4-(methylthio)benzoyl chloride (0.76 g), in the form of a yellow oil.

1. concentrationThe reaction mixture is concentrated