4-(N,N-dimethlyamino)pyridine; N-benzyl-N,N,N-triethylammonium chloride; dodecanesulphonic acid sodium salt; potassium carbonate in water T=50°C; pH=9.5 - 10; 2.5 h;

PEG-400; aluminum oxide; sodium hydroxide; water 1.) MeOH, r.t., 30 min, 2.) r.t., 1 h;