Ahmad Reza Moosavi-Zare - Hamedan University of Technology, Hamedan, ۶۵۱۵۵, Iran
Hamid Goudarziafshar - Hamedan University of Technology, Hamedan, ۶۵۱۵۵, Iran
Zahra Jalilian - University of Kurdistan, Pasdaran Street, Sanandaj, ۶۶۱۷۷-۱۵۱۷۷, Iran
Fatemeh Hosseinabadi - Sayyed Jamaleddin Asadabadi University, Hamedan, Iran

Zn-[۲-boromophenyl-salicylaldimine-methylpyranopyrazole]Cl۲ {[Zn-۲BSMP]Cl۲}, as a Schiff base complex, efficiently catalyzed the pseudo-six-component synthesis of tetrahydrodipyrazolopyridines by the condensation reaction of aryl aldehyde, hydrazine hydrate, ethyl acetoacetate and urea at ۸۰ °C. Urea was used instead of ammonium salts as a source of ammonia by in situ generation of ammonia, in the presence of a little amount of water.

[Zn-۲BSMP]Cl۲, Schiff base, Complex, Tetrahydro-pyrazolopyridine, Multi-component reaction