
PEG3400-Cu2O-Cs2CO3: an efficient and recyclable microwave-enhanced catalytic system for ligand-free Ullmann arylation of indole and benzimidazole
Keywords: گرمایش مایکروویو; Copper; Copper-based nanoparticles; Heterocycles; N-Arylation; Microwave heating; Poly(ethylene glycol);