反应详情

A solution of 50 g. of 4-methylthiobenzoic acid in dichloromethane is treated with excess thionyl chloride at its reflux temperature until no acid remains (according to infrared spectral analysis). Distillation at reduced pressure (b.p. 140° C./0.2 mm. Hg) provides a clear liquid which gradually solidifies to provide 4-methylthiobenzoyl chloride.

1. temperaturereflux temperature until no acid
2. distillationDistillation at reduced pressure (b.p. 140° C./0.2 mm. Hg)
3. customprovides a clear liquid which