magnesium oxide; lithium chloride; palladium dichloride 3 h; Ambient temperature;

potassium thioacyanate in water byproducts: ethyl 3,5-dimethylpyrrole-2-carboxylate; addn. soln. od KCN to soln. of Tl compound, stirring (room temp., 30 min); filtration off thallium(I) thiocyanate, extn. filtrate (CH2Cl2), washing precipitate (CH2Cl2), drying (Na2SO4, vac.), chromy. (silica gel, hexane/AcOEt=3/1); m. p. and IR for thiocyanopyrrole derivative;

copper dichloride in 1,4-dioxane T=80°C; 3 h;

potassium iodide in water 0.5 h; Ambient temperature;

potassium cyanide in water 6 h; Ambient temperatureIrradiation;

potassium thioacyanate in water 0.5 h; Ambient temperature;

potassium cyanide in water 6 h; Ambient temperatureIrradiation;

potassium iodide in water 0.5 h; Ambient temperature;

sodium carbonate; potassium carbonate; tetrakis(triphenylphosphine) palladium(0) 1) THF, r.t., 2) THF, Et2O; Yield given. Multistep reaction;