反应详情

2-Bromomethylacrylic acid (3.00 g, 18.1 mmol) was dissolved in methanol (100 mL), cooled on an ice bath and treated with benzyl mercaptan. Aqueous sodium hydroxide (1N, 39.8 mL) was added dropwise and the reaction mixture was allowed to adjust to room temperature with stirring for 23 hours. Methanol was removed by rotary evaporation at reduced pressure and water (100 mL) was added to the residue, which was then washed with ether. The aqueous layer was cooled on ice and acidified to pH 2.5. The precipitated solid was isolated by filtration and dried to give 2-benzylsulfanylmethyl-acrylic acid (3.346 g, 89%).

1. temperaturecooled on an ice bath
2. customto adjust to room temperature
3. customMethanol was removed by rotary evaporation at reduced pressure and water (100 mL)
4. additionwas added to the residue, which
5. washwas then washed with ether
6. temperatureThe aqueous layer was cooled on ice
7. customThe precipitated solid was isolated by filtration
8. customdried