2-Chloropyrimidine-4-carbonitrile → HCID 21959645、化合物

反応式

[Cl:1][C:2]1[N:7]=[C:6]([C:8]#[N:9])[CH:5]=[CH:4][N:3]=1.[C:10](OC([O-])=O)([O:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[O:11]>CO.[Ni]>[C:13]([O:12][C:10](=[O:11])[NH:9][CH2:8][C:6]1[CH:5]=[CH:4][N:3]=[C:2]([Cl:1])[N:7]=1)([CH3:16])([CH3:15])[CH3:14]

参加物

実験手順

2-Chloropyrimidine-4-carbonitrile (24 g), 40.8 g of t-butyl dicarbonate (Boc2O) in 1.2 L of methanol and 5 g of Raney nickel (Raney 2400) were charged in an autoclave. The autoclave was sealed and purged with hydrogen. The hydrogenation was run at 30 psi hydrogen gas. The reduction was carried out to completion and the reactor was vented and purged with nitrogen. The reaction mixture was filtered over diatomaceous earth and the filtrate was concentrated. The residue was purified by chromatography to yield the title compound (35 g, 84%) as white solid of melting point of 86-88° C.