Multi-step reaction with 8 steps
1: 78 percent / tetrahydrofuran; diethyl ether / 0.5 h / 5 °C
2: 88 percent / n-Bu4NF / tetrahydrofuran / 0.5 h / 0 °C
3: 74 percent / PPh3, I2, imidazole / toluene / 1 h / Heating
4: 95 percent / Zn / ethanol / 0.5 h / Heating
5: 89 percent / DMAP / 1 h / Ambient temperature
6: 71 percent / 2,6-lutidine / CH2Cl2 / 2 h / Ambient temperature
7: 1.) OsO4, NMO, 2. ) NaIO4 / 1.) acetone, t-BuOH, H2O, room temperature, 24 h, 2.) EtOAc, H2O, room temperature, 2 h
8: 88 percent / K2CO3 / methanol / 0.5 h / Ambient temperature
With
1H-imidazole; 2,6-dimethylpyridine; dmap; sodium periodate; osmium(VIII) oxide; N-methyl-2-indolinone; tetrabutyl ammonium fluoride; iodine; potassium carbonate; triphenylphosphine; zinc;
In
tetrahydrofuran; methanol; diethyl ether; ethanol; dichloromethane; toluene;
DOI:10.1271/bbb.62.521