2-(tert-butyl)-1,1,3,3-tetramethylguanidine; iodine in tetrahydrofuran T=20°C; 0.5 h;

tert-butyl-tetramethyl-guanidine; iodine in toluene 0.25 h; Ambient temperaturevariation of solvent and base, optimize the yield of iodide; Product distribution;