反应详情

To a 0° C. solution of methyl 6-(1-hydroxyethyl)nicotinate (0.100 g, 0.552 mmol) and 4-dimethylaminopyridine (152 mg, 1.32 mmol) in dichloromethane (10 mL) was added methanesulfonyl chloride (75.9 mg, 0.662 mmol) dropwise. The resulting mixture was stirred at room temperature for 1 hour. Additional methanesulfonyl chloride (75.9 mg, 0.662 mmol) was added and the mixture stirred at room temperature for an additional 2 hours. The mixture was quenched with water and extracted with dichloromethane. The organic layer was dried over sodium sulfate, filtered and concentrated to give crude methyl 6-(1-(methylsulfonyloxy)ethyl)nicotinate (134 mg) as an oil which was used in the next step directly.

1. stirringthe mixture stirred at room temperature for an additional 2 hours
2. customThe mixture was quenched with water
3. extractionextracted with dichloromethane
4. dry with materialThe organic layer was dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated