Multi-step reaction with 9 steps
1: 1.) n-BuLi / 1.) hexane, Et2O, -78 deg C, 30 min, 2.) Et2O, hexane, -78 deg C, 1 h
2: 75 percent / HCl / 4 h / Ambient temperature
3: 51 percent / NaCNBH3, acetate buffer / methanol / Ambient temperature
4: 97 percent / Et3N / tetrahydrofuran / 1 h / Ambient temperature
5: 87 percent / CaCl2, NaBH4 / ethanol / 0 - 20 °C
6: (COCl)2, DMSO, Et3N / CH2Cl2 / 1 h / -78 °C
7: 73 percent / NaH / tetrahydrofuran / 0.5 h / 0 °C
8: 99 percent / H2 / Pd/C / methanol / 4 h / 760 Torr / Ambient temperature
9: 71 percent / CaCl2, NaBH4 / ethanol / 0 - 20 °C
With
hydrogenchloride; sodium tetrahydroborate; n-butyllithium; oxalyl dichloride; acetate buffer; hydrogen; sodium hydride; sodium cyanoborohydride; dimethyl sulfoxide; triethylamine; calcium chloride;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; ethanol; dichloromethane;
DOI:10.1021/jo990130u