Multi-step reaction with 11 steps
1: borane / tetrahydrofuran / 1.) 0 deg C, 30 min, 2.) 25 deg C, 2 h
2: 4-dimethylaminopyridine, triethylamine / CH2Cl2 / 30 h / 25 °C
3: 1.) tert-butyllithium / 1.) ether, pentane, a) -78 deg C, 30 min, b) 0 deg C, 15 min, 2.) ether, pentane, THF, a) -78 deg C, 10 min, b) 0 deg C, 30 min
4: 75 percent / H2, glacial CH3COOH / 10percent Pd/C / 20 h / 2068.6 Torr
5: 99 percent / 4-(dimethylamino)pyridine, pyridine / 0.5 h / 25 °C
6: CrO3, H2SO4 / acetone / 1 h / 0 °C
7: ethyl acetate; diethyl ether / 0.08 h
8: 54 percent / potassium tert-butoxide / methanol / 1 h / 25 °C
9: Dess-Martin periodinate / CH2Cl2 / 0.25 h / 25 °C
10: methanol / 40 h / 25 °C
11: LiOH*H2O / tetrahydrofuran; H2O / 3 h / 25 °C
With
pyridine; chromium(VI) oxide; dmap; lithium hydroxide; sulfuric acid; borane; potassium tert-butylate; hydrogen; tert.-butyl lithium; Dess-Martin periodane; acetic acid; triethylamine;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; diethyl ether; dichloromethane; water; ethyl acetate; acetone;
DOI:10.1021/jm00113a030