反应详情

To a suspension of 3-methylsulfanyl-benzoic acid (38 g, 0.226 mol) in Toluene (500 mL) was added 200 mL of Red-Al® dropwise at 50° C. over 30 minutes. After stirring at room temperature for 3 hours, NaOH 10% (250 mL) was added while cooling with an ice-bath and then stirred overnight. The organic layer was separated and the water layer extracted twice with toluene (2×100 mL). The combined organic layers were dried (K2CO3), concentrated and distilled under reduced pressure to give the desired product (23.8 g, 68%). MS: 152,7 (M+131 ).

1. temperaturewhile cooling with an ice-bath
2. stirringstirred overnight
3. customThe organic layer was separated
4. extractionthe water layer extracted twice with toluene (2×100 mL)
5. dry with materialThe combined organic layers were dried (K2CO3)
6. concentrationconcentrated
7. distillationdistilled under reduced pressure