反应详情

5-(Hydroxymethyl)pyridine-2-carbonitrile (4 g, 0.03 mol; see step (ii) above) was dissolved in 25 mL of methylene chloride and cooled in an ice bath. Mesyl chloride (2.32 mL, 0.0300 mol) and then triethylamine (4.6 mL, 0.033 mol) were added dropwise. The reaction mixture was stirred and after work up the crude mesylate was treated with NaN3 (7.35 g, 0. 113mol) in 20 mL of DMF. The reaction mixture was stirred at 40° C. for 2 h, diluted with water and extracted with ethyl acetate. The organic layer was concentrated to yield 3.95 g (83%) of the crude azide.

1. temperaturecooled in an ice bath
2. stirringThe reaction mixture was stirred at 40° C. for 2 h
3. extractionextracted with ethyl acetate
4. concentrationThe organic layer was concentrated