1H-imidazole; magnesium; copper(l) iodide in N,N-dimethyl-formamide T=120°C; 48 h;

1: phenylacetylene With potassium tert-butylate in N,N-dimethyl-formamide T=25°C; 0.25 h; 2: (p-Me-C6H4Se)2 in N,N-dimethyl-formamide T=25°C; 0.25 h;

in N,N-dimethyl-formamide T=70 - 80°C; 2 h;