Multi-step reaction with 10 steps
1: Ca(BH4)2 / ethanol / 15 h / Ambient temperature
2: 100 percent / p-dimethylaminopyridine / CH2Cl2 / 5 h / Ambient temperature
3: 92 percent / dimethylsulfoxide / 2 h / 50 °C
4: 1.) DIBAH, 2.) aq. HCl, Rochelle salt / 1.) CH2Cl2, THF, -78 deg C, 40 min, 2.) CH2Cl2, THF, Et2O, RT, 12 h
5: CH2Cl2 / 10 h / Ambient temperature
6: 100 percent / DIBAH / CH2Cl2 / 1.5 h / -78 °C
7: 90 percent / (iso-PrO)4Ti, D-(-)-DET, 3A molecular sieves, tert-butylhydroperoxide / CH2Cl2; toluene / 8 h / Ambient temperature
8: 93 percent / sodium bis(2-methoxyethoxy)aluminum hydride / tetrahydrofuran / 30 h / -20 °C
9: 100 percent / p-TsOH*H2O / benzene / 3 h / Ambient temperature
10: 90 percent / DIBAH / CH2Cl2 / 1.5 h / -78 °C
With
titanium(IV) isopropylate; hydrogenchloride; tert.-butylhydroperoxide; dmap; calcium borohydride; diethyl (2S,3S)-tartrate; 3 A molecular sieve; diisobutylaluminium hydride; toluene-4-sulfonic acid; rochelle salt; sodium bis(2-methoxyethoxy)aluminium dihydride;
In
tetrahydrofuran; ethanol; dichloromethane; dimethyl sulfoxide; toluene; benzene;
DOI:10.1248/cpb.46.1199