Multi-step reaction with 7 steps
1: 1.) n-BuLi, TMEDA, 2.) triisopropyl borate, 3.) tetrakis(triphenylphosphine)palladium, Na2CO3
2: aq. NaOH / methanol / 3 h / Heating
3: 63 percent / NCS / dioxane; H2O / 1.5 h / Heating
4: 95 percent / DBU / toluene / 1.) 45 deg C, 45 min, 2.) reflux, 1 h
5: diphenylphosphorazidate, Et3N / dioxane / 20 h / Heating
6: NBS, benzoyl peroxide / CCl4 / 1.5 h / Heating; Irradiation
7: K2CO3 / dimethylformamide / 16 h / Ambient temperature
With
sodium hydroxide; N-chloro-succinimide; N-Bromosuccinimide; tetrakis(triphenylphosphine) palladium(0); n-butyllithium; Perbenzoic acid; Triisopropyl borate; N,N,N,N,-tetramethylethylenediamine; diphenyl phosphoryl azide; sodium carbonate; potassium carbonate; 1,8-diazabicyclo[5.4.0]undec-7-ene; triethylamine;
In
1,4-dioxane; methanol; tetrachloromethane; water; N,N-dimethyl-formamide; toluene;
DOI:10.1021/jm00045a016