Hydrazine → 3-((tert-butyldimethylsilyloxy)methyl)-2-(1H-pyrazol-5-yl)pyridine
反応式
[Si:1]([O:8][CH2:9][C:10]1[C:11]([C:16](=O)/[CH:17]=[CH:18]/[N:19](C)C)=[N:12][CH:13]=[CH:14][CH:15]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[NH2:23]N>CCO>[Si:1]([O:8][CH2:9][C:10]1[C:11]([C:16]2[NH:23][N:19]=[CH:18][CH:17]=2)=[N:12][CH:13]=[CH:14][CH:15]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]参加物
4
反応条件
- 温度
- 80 °C
実験手順
To (E)-1-(3-((tert-butyldimethylsilyloxy)methyl)pyridin-2-yl)-3-(dimethylamino)prop-2-en-1-one (crude, 350 mg, 1.09 mmol, 1 eq.) in EtOH (5 mL) was added hydrazine (140 mg, 4.36 mmol, 4 eq.). The mixture was heated at 80° C. for 2 h, cooled, concentrated, and purified on silica gel using EtOAc as eluent to give 3-((tert-butyldimethylsilyloxy)methyl)-2-(1H-pyrazol-5-yl)pyridine (282 mg, 90%) as a white solid. LRMS (M+H+) m/z 290.1