Multi-step reaction with 11 steps
1: 98 percent / 1,1'-thiocarbonyldiimidazole, DMAP / dimethylformamide / 1.) r.t., 3 h, 2.) 70 deg C, 30 min
2: 96.5 percent / CHCl3; diethyl ether / 72 h / 0 °C
3: benzophenone / benzene; acetonitrile / 2 h / Irradiation
4: 25percent aq. NaOH / methanol / 24 h / Heating
5: Et3N, DPPA / toluene / 1.) r.t., 2 h, 2.) 80 deg C, 2 h
6: toluene / 1.) 80 deg C, 2 h, 2.) r.t., overnight
7: 99 percent / Bu4NF / acetonitrile; tetrahydrofuran / 4 h / 70 °C
8: CH2Cl2 / Ambient temperature
9: 2 M HCl / ethanol / Heating
10: POCl3, Et3N / acetonitrile / 2 h / Ambient temperature
11: conc. NH4OH / dioxane / 48 h / 40 °C
With
hydrogenchloride; dmap; ammonium hydroxide; sodium hydroxide; benzophenone; diphenyl-phosphinic acid; tetrabutyl ammonium fluoride; triethylamine; 1,1'-Thiocarbonyldiimidazole; trichlorophosphate;
In
tetrahydrofuran; 1,4-dioxane; methanol; diethyl ether; ethanol; dichloromethane; chloroform; N,N-dimethyl-formamide; toluene; acetonitrile; benzene;
DOI:10.1039/a604352f