Multi-step reaction with 7 steps
1: 1) n-BuLi / 1) THF, hexane, -85 deg C, 5 min, 2) THF, below -70 deg C to room temperature
2: pyridine / 50 °C
3: H2 / 10percent Pd/C / methanol
4: 1) iodine tris(trifluoroacetate), 2) NaClO4 / 1) CF3COOH, (CF3CO)2O, room temperature, overnight, 2) CH2Cl2, H2O, NaAc
5: Cu bronze, dicyclohexyl-18-crown-6, KOBu-t / CH2Cl2 / 4 h
6: 64 percent / NaOAc / acetic anhydride / 24 h / 100 °C
7: 80 percent / 2 N NaOH / ethanol / 0.5 h / 65 °C
With
pyridine; perhydrodibenzo-18-crown-6; sodium hydroxide; n-butyllithium; copper bronze; iodine tris(trifluoroacetate); potassium tert-butylate; sodium perchlorate; hydrogen; sodium acetate;
palladium on activated charcoal;
In
methanol; ethanol; dichloromethane; acetic anhydride;
DOI:10.1021/jm00122a009