Multi-step reaction with 8 steps
1: 98 percent / diethyl ether / -75 °C
2: 60 percent / manganese dioxide / toluene / 18 h / Heating
3: 1.) sodium hydride / 1.) ether, RT, 25 min, 2.) ether, ethanol, reflux, 6 h
4: 1.) sodium hydride / 1.) THF, RT, 0.5 h, 2.) THF, reflux, 48 h
5: conc. HCl / acetic acid / 5 h / Heating
6: 71 percent / piperidine / ethanol / 24 h / Heating
7: 81 percent / H2 / Pd/C / tetrahydrofuran / 24 h / 2585.7 Torr / Ambient temperature
8: NH2OH*HCl, pyridine / ethanol
With
piperidine; pyridine; hydrogenchloride; manganese(IV) oxide; hydroxylamine hydrochloride; hydrogen; sodium hydride;
palladium on activated charcoal;
In
tetrahydrofuran; diethyl ether; ethanol; acetic acid; toluene;
DOI:10.1021/jm00088a022