Multi-step reaction with 7 steps
1: 89 percent / NaHCO3 / N,N-dimethyl-acetamide / 120 h
2: 1.) NaBH4 / 1.) DMA, 0 deg C, 25 min, 2.) RT, 40 h
3: 69 percent / Fe, FeSO4*7H2O / methanol / 4 h / Heating
4: 93 percent / 1 N aq. NaOH / ethanol / 40 h
5: 2.) aq. NH3 / 1.) reflux, 40 min, 2.) 60 deg C, 1 h
6: 31 percent / diphenyl phosphorazidate (DPPA), Et3N / dimethylformamide / 16 h / Ambient temperature
7: 83 percent / aq. NaOH / ethanol / 2 h
With
ammonium hydroxide; sodium hydroxide; sodium tetrahydroborate; diphenyl phosphoryl azide; iron; sodium hydrogencarbonate; iron(II) sulfate; triethylamine;
In
methanol; ethanol; N,N-dimethyl acetamide; N,N-dimethyl-formamide;
DOI:10.1021/jm00111a042