hydrogenchloride; triethylamine in N,N-dimethyl-formamide 2 h; Heating;

1: 93 percent / triethylamine / propan-2-ol / 20 h / Heating 2: 98 percent / thionylchloride / CH2Cl2 / 2 h / Heating 3: 23 percent / 1.) triethylamine; 2.) ethanolic HCl / dimethylformamide / 2 h / Heating View Scheme