Multi-step reaction with 5 steps
1: 1.) Mg, 2.) PdCl2(dppf) / 1.) Et2O, reflux, 0.5 h, 2.) Et2O, reflux, overnight
2: 1.) Mg, I2, 2.) Li2CuCl4 / 1.) THF, reflux, 0.5 h, 2.) THF, room temperature, overnight
3: 78 percent / I2, H5IO6, 30percent H2SO4, acetic acid / CCl4 / 48 h / 80 °C
4: 73 percent / K2CO3, Bu4NBr, NaI / toluene / Heating
5: 64 percent / POCl3 / 1.) 0 deg C, 1 h; 25 deg C, 1 h, 2.) 80 deg C, overnight
With
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; dilithium tetrachlorocuprate; sulfuric acid; tetrabutylammomium bromide; iodine; potassium carbonate; magnesium; acetic acid; periodic acid; sodium iodide; trichlorophosphate;
In
tetrachloromethane; toluene;
DOI:10.1021/ja970048l