Multi-step reaction with 8 steps
1: 92.2 percent / K2CO3 / dimethylformamide / 14 h / Ambient temperature
2: 1 N NaOH / ethanol
3: 1.) Et3N, diphenyl phosphorazidate / 1.) benzene, reflux, 40 min, 2.) benzene, 40 min
4: 1.) NaH / 1.) DMF, 0 deg C, 30 min, 2.) DMF, RT, 2 h
5: 84 percent / HCl / ethyl acetate / 0.5 h / 0 °C
6: H2 / 10percent Pd/C / methanol / 2 h / Ambient temperature
7: 1.) NaH / 1.) DMF, 0 deg C, 30 min, 2.) DMF, RT, 2 h
8: 80.6 percent / tetrahydrofuran / 7 h / Ambient temperature
With
hydrogenchloride; sodium hydroxide; diphenyl phosphoryl azide; hydrogen; sodium hydride; potassium carbonate; triethylamine;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; ethanol; ethyl acetate; N,N-dimethyl-formamide;
DOI:10.1021/jm980300f