Multi-step reaction with 11 steps
1: 34 percent / potassium hexamethyldisilazane / tetrahydrofuran / 3 h / -60 °C
2: 91 percent / NaBH4, CeCl3*7H2O / tetrahydrofuran; methanol / 1.5 h / 40 °C
3: 85 percent / xylene / 8 h / Heating
4: 1.) AD-mix β, 2.) NaIO4 / 1.) T-BuOH, H2O, 5 deg C, 36 h, 2.) t-BuOH, H2O, RT, 45 min
5: 93 percent / NaBH4 / tetrahydrofuran; methanol / 12 h
6: 100 percent / imidazole, (dimethylamino)pyridine / CH2Cl2 / 5 h / Ambient temperature
7: 90 percent / aq. LiOH*H2O / tetrahydrofuran; methanol / 24 h / 40 °C
8: PhOPOCl2, NEt3 / tetrahydrofuran / 0.67 h / 0 - 22 °C
9: Et3N / 1 h / 0 - 22 °C
10: Bu3SnH, AIBN / xylene / 1 h / 130 °C
11: 85 percent / I2, phosphate buffer / tetrahydrofuran / 2 h / 21 °C / pH 5.5
With
1H-imidazole; dmap; lithium hydroxide; sodium tetrahydroborate; sodium periodate; phosphate buffer; cerium(III) chloride; potassium hexamethyldisilazane; 2,2'-azobis(isobutyronitrile); iodine; tri-n-butyl-tin hydride; O-phenyl phosphorodichloridate; 1,4-bis(9-O-dihydroquinidine)phthalazine; triethylamine;
In
tetrahydrofuran; methanol; dichloromethane; xylene;
DOI:10.1021/ja00150a010