Multi-step reaction with 16 steps
1: diisobutylaluminum hydride / hexane; toluene / 0.67 h / -75 °C
2: 96 percent / potassium tert-butoxide / tetrahydrofuran / 0.67 h / 23 °C
3: 100 percent / pyridinium chlorochromate, sodium acetate, celite / CH2Cl2 / 13 h / 0 °C
4: 90 percent / CH2Cl2 / 0.5 h / Ambient temperature
5: 1.) thexylborane, 2.) aq. NaOH, H2O2
6: 8 percent / SO3-pyridine, triethylamine / dimethylsulfoxide / 1.) 23 deg C, 1 h, 2.) 65 deg C, 3.5 h
7: CH3SOCH2Na
9: H2 / Pd/C
10: triethylamine
11: DBU
12: 94 percent / tetra-n-butylammonium fluoride / tetrahydrofuran / 5 h / 23 °C
13: SO3-pyridine, triethylamine / dimethylsulfoxide / 0.33 h / 23 °C
14: NaH / tetrahydrofuran / 0.67 h / 23 °C
15: NaBH4 / methanol / 0.33 h / -20 °C
16: acetic acid; H2O; tetrahydrofuran / 5 h / 45 - 50 °C
With
sodium hydroxide; sodium tetrahydroborate; pyridine-SO3 complex; Celite; thexylborane; potassium tert-butylate; tetrabutyl ammonium fluoride; hydrogen; dihydrogen peroxide; sodium acetate; sodium hydride; diisobutylaluminium hydride; sodium methylsulfinylmethanide; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; pyridinium chlorochromate;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; hexane; dichloromethane; water; acetic acid; dimethyl sulfoxide; toluene;
DOI:10.1248/cpb.37.586