Multi-step reaction with 9 steps
1: 83 percent / PCC / CH2Cl2 / 3 h / Heating
2: 1.) t-BuOK / 1.) benzene, reflux, 1 h, 2.) benzene, 60 deg C, 2 h
3: 1.) BH3*SMe2, 2.) H2O2, NaOH / 1.) THF, rt, 5 h, 2.) THF, H2O, rt, 24 h
4: 77 percent / pyridine / -10 - 20 °C
5: 99 percent / TBAF / tetrahydrofuran / 2 h / Ambient temperature
6: Et3N, DMAP / CH2Cl2 / 3 h / -15 °C
7: 3.445 g / DBU / toluene / 6 h / Ambient temperature
8: 1.) HMDS, ammonium sulfate, 2.) NIS / 1.) reflux, 4 h, 2.) CH2Cl2, rt, 3 h
9: 87 percent / n-Bu3SnH, AIBN / benzene / 5 h / 65 °C
With
dmap; sodium hydroxide; ammonium sulfate; N-iodo-succinimide; 2,2'-azobis(isobutyronitrile); dimethylsulfide borane complex; potassium tert-butylate; tetrabutyl ammonium fluoride; dihydrogen peroxide; tri-n-butyl-tin hydride; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine; 1,1,1,3,3,3-hexamethyl-disilazane; pyridinium chlorochromate;
In
tetrahydrofuran; pyridine; dichloromethane; toluene; benzene;
DOI:10.1016/S0040-4020(98)00061-1