Multi-step reaction with 6 steps
1: 1H-imidazole / N,N-dimethyl-formamide / 0 - 20 °C
2: hydrogen / palladium 10% on activated carbon / methanol / 4.5 h / 20 °C / 2585.81 Torr
3: triethylamine; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / N,N-dimethyl-formamide / 1 h / 20 °C
4: water; lithium hydroxide monohydrate / tetrahydrofuran / 15 h
5: triethylamine; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate / tetrahydrofuran / 15 h / 20 °C
6: 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran / 1 h / 20 °C
With
1H-imidazole; lithium hydroxide monohydrate; water; hydrogen; benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; triethylamine;
palladium 10% on activated carbon;
In
tetrahydrofuran; methanol; 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran; N,N-dimethyl-formamide;