potassium carbonate in N,N-dimethyl-formamide T=60°C; Inert atmosphere;

Amberlite IRA-400 (Cl(1-)form) resin in methanol

1: 2-(thiazol-4-yl)-benzimidazole With sodium hydride in N,N-dimethyl-formamide; benzene 0.5 h; 2: benzyl chloride in N,N-dimethyl-formamide; benzene 1 h; Heating;