tert-Butyl 5-cyano-6-methylpyridin-2-ylcarbamate → tert-Butyl 5-(aminomethyl)-6-methylpyridin-2-ylcarbamate
反応式
[C:1]([O:5][C:6]([NH:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]#[N:16])=[C:11]([CH3:17])[N:10]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]>C(O)(=O)C.[Pd]>[NH2:16][CH2:15][C:12]1[CH:13]=[CH:14][C:9]([NH:8][C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:7])=[N:10][C:11]=1[CH3:17]参加物
4
実験手順
A mixture of 2-t-butoxycarbonylamino-5-cyano-6-methylpyridine (14.68 g, 62.9 mmol) and 10% Pd/C (1.5 g) in glacial acetic acid (150 ml) was shaken on a Parr apparatus at 60 psi for 88 h. The reaction was filtered through celite and was evaporated in vacuo. The residue was dissolved in water and the solution was washed with methylene chloride (2 times), then was basified with sodium carbonate and extracted with ethyl acetate (2 times). The combined ethyl acetate layers were dried (Na2SO4) and evaporated in vacuo to a solid. The crude product was recrystallized (ethyl acetate/hexanes) to give the title compound: