Multi-step reaction with 9 steps
1: 73 percent / LiAlH4 / tetrahydrofuran / 0.5 h / 0 °C
2: 1.) NaH / 1.) DMF, -10 deg C, 30 min, 2.) DMF, -15 deg C, 30 min
3: 29 percent / H2O / 5 h / 150 °C
4: 58 percent / diethyl azodicarboxylate, Ph3P / tetrahydrofuran / 18 h / Ambient temperature
5: 96 percent / 2N aq. HCl / methanol / 2 h / Heating
6: SOCl2 / CHCl3 / 1 h / Heating
7: dimethylformamide / 1 h / Ambient temperature
8: 65 percent / piperidine / ethanol / 18 h / Heating
9: 56 percent / NaBH4, 1.0N aq. NaOH, CoCl2*6H2O, 2,2'-dipyridyl / dimethylformamide; tetrahydrofuran / 18 h / Ambient temperature
With
piperidine; hydrogenchloride; [2,2]bipyridinyl; sodium hydroxide; sodium tetrahydroborate; lithium aluminium tetrahydride; thionyl chloride; sodium hydride; triphenylphosphine; cobalt(II) chloride; diethylazodicarboxylate;
In
tetrahydrofuran; methanol; ethanol; chloroform; water; N,N-dimethyl-formamide;
DOI:10.1021/jm9605694