1: 4-methyl-1,3-thiazole-2-amine With nitrosyl-sulphuric acid in sulfuric acid; acetic acid; propionic acid T=-5 - 0°C; 2.5 h; 2: 1-methyl 2-phenyl indole With sodium carbonate in sulfuric acid; acetic acid; propionic acid T=0 - 20°C; pH=4 - 6; 26 h;