Multi-step reaction with 10 steps
1: 75 percent / imidazole / dimethylformamide / 1 h / Ambient temperature
2: Cs2CO3 / tetrahydrofuran / 15 h / Ambient temperature
3: pyridine / 5 h
4: 33 percent / 1,2-dichloro-benzene / 4 h / Heating
5: 99 percent / H2 / 10percent Pd/C / methanol / 4 h / 1 Torr
6: 90 percent / KOH / methanol; H2O / 1 h / Ambient temperature
7: 1.) pyridine, ethyl chloroformate, 2.) NaN3 / 1.) THF, 1 h, 2.) H2O, 0 deg C, 1 h
8: tetrahydrofuran / 4 h / Heating
9: 12 h / Ambient temperature
10: 1.) BH3, 2.) conc. HCl / 1.) THF, reflux, 0.75 h, 2.) reflux, 2 h
With
pyridine; 1H-imidazole; hydrogenchloride; potassium hydroxide; sodium azide; borane; hydrogen; chloroformic acid ethyl ester; caesium carbonate;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; water; N,N-dimethyl-formamide; 1,2-dichloro-benzene;
DOI:10.1021/ja00389a030