Multi-step reaction with 7 steps
1: 76 percent / n-BuLi / tetrahydrofuran / 1.) 0 deg C, 1 h, 2.) r.t., overnight
2: 100 percent / dimethylsulfoxide / 12 h / 80 °C
3: aq. KOH / ethanol / 12 h / Heating
4: 1.) 1,1'-carbonyldiimidazole / 1.) THF, 4 h, 2.) H2O, 4 h
5: 53 percent / 50percent aq. NaOH, n-Bu4NHSO4 / benzene / 1.) 30 min, 2.) overnight
6: 54 percent / n-BuLi / tetrahydrofuran; hexane / 1.) -78 deg C, 60 min, 2.) -78 deg C to r.t., 60 min
7: 85 percent / MsN3, Et3N / acetonitrile / Ambient temperature
With
potassium hydroxide; sodium hydroxide; n-butyllithium; tetra(n-butyl)ammonium hydrogensulfate; triethylamine; Methanesulfonyl azide; 1,1'-carbonyldiimidazole;
In
tetrahydrofuran; ethanol; hexane; dimethyl sulfoxide; acetonitrile; benzene;
DOI:10.1021/jo00102a037