1-Methylpiperazine → 2-Amino-6-(4-methyl-1-piperazinyl)-3-(2,3,5-trichlorophenyl)pyrazine
Reaction equation
[NH2:1][C:2]1[C:7]([C:8]2[CH:13]=[C:12]([Cl:14])[CH:11]=[C:10]([Cl:15])[C:9]=2[Cl:16])=[N:6][CH:5]=[C:4](Cl)[N:3]=1.[CH3:18][N:19]1[CH2:24][CH2:23][NH:22][CH2:21][CH2:20]1>>[NH2:1][C:2]1[C:7]([C:8]2[CH:13]=[C:12]([Cl:14])[CH:11]=[C:10]([Cl:15])[C:9]=2[Cl:16])=[N:6][CH:5]=[C:4]([N:22]2[CH2:23][CH2:24][N:19]([CH3:18])[CH2:20][CH2:21]2)[N:3]=1Participants
3
Conditions
- Temperature
- 140 °C
Procedure
2-Amino-6-chloro-3-(2,3,5-trichlorophenyl)pyrazine (0.215 g ,7.0×10−3 mole) Example I Route A and 1-methylpiperazine (5 ml, Aldrich), were heated at 140° C. for 1 hr. The mixture was evaporated in vacuo and the residue was purified by ‘flash chromatography’ eluting with ethanol:dichloromethane, 0-4%. The product was dissolved in the minimum of dichloromethane and hexane (10 ml), added slowly to give yellow needles. Yield 0.247 g (95%), M.p. 185° C.