Multi-step reaction with 12 steps
1: 103.1 g / HCl / ethanol / 16 h / Ambient temperature
2: 53 percent / methanol / 72 h / 5 °C
3: 73 percent / methanol / 1.5 h / 100 °C
4: 89 percent / pyridine, lithium iodide / 2 h / Heating
5: 1.) Et3N, diphenyl phosphorazidate / 1.) 100 deg C, 2 h, 2.) 100 deg C, 12 h
6: 1N aq. HCl / tetrahydrofuran / 8 h / Heating
7: sodium chlorite, sodium dihydrogen phosphate monohydrate / tetrahydrofuran; 2-methyl-propan-2-ol; various solvent(s) / 1 h / Ambient temperature
8: 86 percent / 1-hydroxybenzotriazole hydrate, Et3N, EDC / dimethylformamide / 16 h
9: 5.06 g / 2,6-lutidine / CH2Cl2 / 0.75 h
10: H2 / 10percent Pd/C / ethanol; tetrahydrofuran / 1 h / 2327.2 Torr
11: Et3N / CH2Cl2 / 0.42 h
12: Et3N / CH2Cl2 / 16 h
With
pyridine; 2,6-dimethylpyridine; hydrogenchloride; sodium chlorite; sodium dihydrogenphosphate; diphenyl phosphoryl azide; hydrogen; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; 1-hydroxybenzotriazol-hydrate; triethylamine; lithium iodide;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; ethanol; dichloromethane; N,N-dimethyl-formamide; tert-butyl alcohol;
DOI:10.1021/jm00001a015