Multi-step reaction with 11 steps
1: 73 percent / piperidine / pyridine / 8 h
2: NaH / tetrahydrofuran / 1.) from 5 to 10 deg C, 2 h, 2.) RT, overnight
3: 75 percent / NaOAc / H2O; methanol / 22 h / Ambient temperature
4: 74.7 percent / DBN / CH2Cl2 / 1.) 0 deg C, 1 h, 2.) RT, 48 h
5: 89.5 percent / Na2CO3 / methanol / 17 h / Ambient temperature
6: 92 percent / CH2Cl2 / 1 h / Ambient temperature
7: DBN / CH2Cl2 / 1.) 0 deg C, 10 min, 2.) RT, 1 h
8: 57.5 percent / NH3 / methanol / 20 h / 100 °C
9: 88 percent / H2, Et3N / 30percent Pd/C / ethanol; dimethylformamide / 5 h / 760 Torr
10: 89 percent / 6N HCl / 18 h / Heating
11: thionyl chloride / 0 - 20 °C / 81 Torr
With
piperidine; hydrogenchloride; thionyl chloride; 2,6-dichloro-benzonitrile; ammonia; hydrogen; sodium acetate; sodium hydride; sodium carbonate; triethylamine;
palladium on activated charcoal;
In
tetrahydrofuran; pyridine; methanol; ethanol; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1021/jm00076a004