Multi-step reaction with 10 steps
1: 72.8 percent / CBr4, Ph3P / acetonitrile / Ambient temperature
2: 91.7 percent / tributyltin hydride, AIBN / toluene / 5 h / 80 °C
3: 90.6 percent / 6 N HCl / 8 h / Heating
4: 100 percent / thionyl chloride / 72 h / Ambient temperature
5: 67 percent / HOBt*H2O, DDC, Et3N / CH2Cl2 / Ambient temperature
6: trifluoroacetic acid / 1.) 0 deg C, 10 min, 2.) RT, 1 h
7: CH2Cl2 / 3 h
8: 82 percent / H2SO4 / CH2Cl2 / 264 h / Ambient temperature
9: 1.) HCO2H, 2.) 0.2 N HCl / 1.) Pd-black / 1.) RT, 1,5 h, methanol
10: diphenyl phosphoroazidate, Et3N / dimethylformamide / Ambient temperature
With
hydrogenchloride; formic acid; thionyl chloride; 2,2'-azobis(isobutyronitrile); carbon tetrabromide; sulfuric acid; diphenyl phosphoryl azide; tri-n-butyl-tin hydride; benzotriazol-1-ol; triethylamine; triphenylphosphine; 2`,3`-dideoxycytidine; trifluoroacetic acid;
palladium;
In
dichloromethane; N,N-dimethyl-formamide; toluene; acetonitrile;
DOI:10.1021/ja00158a052