Multi-step reaction with 6 steps
1: 37 percent / p-toluenesulfonic acid, pyridinium p-toluenesulfonate / CH2Cl2 / 70 h / Heating
2: 1.) lithium hexamethyldisilazide, HMPA / 1.) THF, 10 min, 2.) THF, 1.5 h
3: 84 percent / n-butyllithium / tetrahydrofuran; hexane / 0.33 h / -78 °C
4: 95 percent / 2,6-lutidine / CH2Cl2 / 1.5 h
5: 1.) triethylamine, methanesulfonyl chloride, 2.) NaBH4 / 1.) THF, 0 deg C, 1 h, 2.) ethanol, 80 deg C, 7.5 h
6: 98 percent / 30percent H2O2 / tetrahydrofuran / 1 h / Heating
With
2,6-dimethylpyridine; N,N,N,N,N,N-hexamethylphosphoric triamide; sodium tetrahydroborate; n-butyllithium; dihydrogen peroxide; pyridinium p-toluenesulfonate; toluene-4-sulfonic acid; methanesulfonyl chloride; triethylamine; lithium hexamethyldisilazane;
In
tetrahydrofuran; hexane; dichloromethane;