Multi-step reaction with 10 steps
1: 48 percent / Et3N, DMAP / CH2Cl2 / 6 h
2: 84 percent / PCC, NaOAc / CH2Cl2 / 3 h
3: 89 percent / diethyl ether / 3 h / 0 °C
4: porcine pancreatic lipase / diisopropyl ether / 18 h
5: 97 percent / 2N alcoholic KOH / 12 h / Ambient temperature
6: 1.) NaH / 1.) THF, 60 deg C, 1 h, 2.) THF, RT, overnight
7: 88 percent / Bu4NF / tetrahydrofuran / -78 °C
8: 84 percent / PCC, NaOAc / CH2Cl2 / 3 h
9: 1.) n-BuLi / 1.) THF, hexane, -25 deg C, 1 h, 2.) THF, hexane, a) -30 deg C, 4 h, b) RT, 12 h
10: 96 percent / pyridine / 14 h
With
pyridine; dmap; potassium hydroxide; n-butyllithium; porcine pancreatic lipase; tetrabutyl ammonium fluoride; sodium acetate; sodium hydride; triethylamine; pyridinium chlorochromate;
In
tetrahydrofuran; diethyl ether; dichloromethane; di-isopropyl ether;