Multi-step reaction with 28 steps
1: 1.) DIBAH, 2.) aq. HCl, Rochelle salt / 1.) CH2Cl2, THF, -78 deg C, 40 min, 2.) CH2Cl2, THF, Et2O, RT, 12 h
2: CH2Cl2 / 10 h / Ambient temperature
3: 100 percent / DIBAH / CH2Cl2 / 1.5 h / -78 °C
4: 90 percent / (iso-PrO)4Ti, L-(+)-DET, 3A molecular sieves, tert-butylhydroperoxide / CH2Cl2; toluene / 8 h / Ambient temperature
5: 98 percent / sodium bis(2-methoxyethoxy)aluminum hydride / tetrahydrofuran / 30 h / -20 °C
6: p-TsOH*H2O / benzene / 3 h / Ambient temperature
7: DIBAH / CH2Cl2 / 1.5 h / -78 °C
8: 1.) (COCl)2, DMSO, 2.) Et3N / 1.) CH2Cl2, -78 deg C, 15 min, 2.) CH2Cl2, -30 deg C, 1 h
9: 1.) n-BuLi / 1.) THF, hexane, -78 deg C, 20 min, 2.) THF, hexane, RT, 1 h
10: 97 percent / LiAlH4, LiI / diethyl ether / 1 h / -100 °C
11: 96 percent / AcOH, MeOH / 24 h / Ambient temperature
12: 86 percent / NaHCO3, I2 / tetrahydrofuran / 0.5 h / 0 °C
13: 60 percent / NaH / tetrahydrofuran / 1 h / Ambient temperature
14: 90 percent / H2 / Raney-Ni / ethanol / 760 Torr / Ambient temperature
15: 84 percent / pyridine / CH2Cl2 / 1 h / 0 °C
16: 1.) (COCl)2, DMSO, 2.) Et3N / 1.) CH2Cl2, -78 deg C, 15 min, 2.) CH2Cl2, -78 deg C, 1 h
17: 1.) tert-BuOK / 1.) THF, RT, 1 h, 2.) THF, 0 deg C, 2 h
18: Et3N, DMAP / CH2Cl2 / 1 h / 0 °C
19: 86 percent / TBAF / tetrahydrofuran / 3 h / Ambient temperature
20: Et3N, DMAP / CH2Cl2 / 2 h / Ambient temperature
21: dimethylsulfoxide / 0.5 h / 50 °C
22: K2CO3 / methanol / 4 h / Ambient temperature
23: (iso-Pr)2EtN / CH2Cl2 / 2 h / Ambient temperature
24: 1.) DIBAH, 2.) aq. Rochelle salt / 1.) CH2Cl2, hexane, -78 deg C, 30 min, 2.) CH2Cl2, hexane, RT, 3 h
25: CrO3, H2SO4 / acetone / 0.5 h / 20 °C
26: diethyl ether
27: 1.) LDA / 1.) THF, hexane, -78 deg C, 15 min, 2.) THF, hexane, -78 deg C, 15 min
28: 82 percent / LiAlH4 / tetrahydrofuran / 4 h / 0 °C
With
pyridine; chromium(VI) oxide; titanium(IV) isopropylate; hydrogenchloride; methanol; tert.-butylhydroperoxide; dmap; lithium aluminium tetrahydride; n-butyllithium; oxalyl dichloride; diethyl (2R,3R)-tartrate; 3 A molecular sieve; sulfuric acid; potassium tert-butylate; tetrabutyl ammonium fluoride; hydrogen; iodine; sodium hydride; diisobutylaluminium hydride; sodium hydrogencarbonate; potassium carbonate; toluene-4-sulfonic acid; acetic acid; dimethyl sulfoxide; rochelle salt; triethylamine; N-ethyl-N,N-diisopropylamine; sodium bis(2-methoxyethoxy)aluminium dihydride; lithium iodide; lithium diisopropyl amide;
nickel;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; dimethyl sulfoxide; acetone; toluene; benzene;
DOI:10.1248/cpb.46.1199