Multi-step reaction with 9 steps
1: 100 percent / Br2 / CCl4 / 0.67 h / 0 - 5 °C
2: 92 percent / aq. NaOH / methanol / 3 h / Heating
3: 18 percent / diphenylphosphorazidate, Et3N / dioxane / 20 h / Heating
4: 97 percent / NBS, benzoyl peroxide / CCl4 / 1.5 h / Heating; Irradiation
5: 62 percent / K2CO3 / dimethylformamide / 16 h / Ambient temperature
6: 32 percent / bis(triphenylphosphine)palladium dichloride, CuI, diethylamine / 29 h / 90 °C
7: 72 percent / aq. NaOH / methanol; tetrahydrofuran / 16 h / Ambient temperature
8: 88 percent / H2 / 10percent Pd/C / ethanol / 0.33 h / 760 Torr / Ambient temperature
9: trifluoroacetic acid / CH2Cl2 / 16 h / Ambient temperature
With
bis-triphenylphosphine-palladium(II) chloride; sodium hydroxide; N-Bromosuccinimide; copper(l) iodide; Perbenzoic acid; diphenyl phosphoryl azide; hydrogen; bromine; potassium carbonate; diethylamine; triethylamine; trifluoroacetic acid;
palladium on activated charcoal;
In
tetrahydrofuran; 1,4-dioxane; methanol; tetrachloromethane; ethanol; dichloromethane; N,N-dimethyl-formamide;
DOI:10.1021/jm00045a016