Triethylamine → 4-Ethylamino-5-nitro-2-phenylpyrimidine

Reaction equation

Cl[C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][N:5]=[C:4]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[N:3]=1.Cl.[CH2:18]([NH2:20])[CH3:19].C(N(CC)CC)C>C(O)(C)C>[CH2:18]([NH:20][C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][N:5]=[C:4]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[N:3]=1)[CH3:19]

Participants

Procedure

A mixture of 4-chloro-5-nitro-2-phenylpyrimidine (3 g), ethylamine hydrochloride (1.6 g), triethylamine (3.9 g) and isopropanol (60 ml) is refluxed for three hours. The reaction mixture is concentrated under reduced pressure, and to the residue are added chloroform and water. The chloroform layer is separated, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (eluent; chloroform), and recrystallized from isopropanol to give the desired compound (2.9 g).