Ponomarchuk, M. P.; Kasukhin, L. F.; Budilova, I. Yu.; Gololobov, Yu. G.
J. Gen. Chem. USSR (Engl. Transl.), 1980 , vol. 50, # 9 p. 1937 - 1946,1561 - 1568
1: 2-amino-1H-benzimidazole With triethylamine in acetonitrile
0.166667 h; Cooling with ice;
2: diethyl chlorophosphate in acetonitrile
T=70°C; Cooling with ice;