Pyridine → 2-Isopropylamino-6-methyl-pyrimidine-4-carbonitrile
反応式
[CH:1]([NH:4][C:5]1[N:10]=[C:9]([C:11]([NH2:13])=O)[CH:8]=[C:7]([CH3:14])[N:6]=1)([CH3:3])[CH3:2].N1C=CC=CC=1>C(Cl)Cl>[CH:1]([NH:4][C:5]1[N:10]=[C:9]([C:11]#[N:13])[CH:8]=[C:7]([CH3:14])[N:6]=1)([CH3:3])[CH3:2]参加物
4
実験手順
To a suspension of 2-isopropylamino-6-methyl-pyrimidine-4-carboxylic acid amide (1.24 g, 6.4 mmol) in DCM (20 mL), pyridine (2.53 mL, 25.6 mmol) is added followed by TFFA (2.7 mL, 19.2 mmol). The reaction mixture is stirred for 4 h, and then is quenched with water. The mixture is extracted with DCM. The org. phase is washed with sat. aq. NaHCO3 and dried over MgSO4, filtered and evaporated. Purification by CC on silica gel (eluting with Heptane/EtOAc 4:1) affords the 2-isopropylamino-6-methyl-pyrimidine-4-carbonitrile as a yellow oil (2.81 g); LC-MS: tR=0.89; [M+H]+=177.04.