Реакция #66949

Уравнение реакции

3,4-Methylenedioxy-5-methoxybenzoic acid

thionyl chloride

→

3,4-methylenedioxy-5-methoxy-benzoyl chloride

Растворители

benzene

Условия реакции

Обработка

1. 1
   Температураthe resulting solution was refluxed for 15 hr
2. 2
   Другоеthe solvent and excessive thionyl chloride were removed by distillation under reduced pressure

Методика

3,4-Methylenedioxy-5-methoxybenzoic acid (39.23 g, 0.2 mol) was dissolved in dry benzene, thionyl chloride 47.6 g (28.8 ml, 0.4 mol) was added under stirring, the resulting solution was refluxed for 15 hr, then the solvent and excessive thionyl chloride were removed by distillation under reduced pressure to give pure 3,4-methylenedioxy-5-methoxy-benzoyl chloride.

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