Size-controlled crystalline basic nanoporous coordination polymers of Zn4O(H2N-TA)3: Catalytically study of IRMOF-3 as a suitable and green catalyst for selective synthesis of tetrahydro-chromenes

Size-controlled crystalline basic nanoporous coordination polymers of IRMOF-3 (Zn4O(H2N-TA)3) and its catalytically study for synthesis of tetrahydro-chromenes was investigated. IRMOF-3 was found to be an efficient, selective and waste-free green solid base for the coupling reaction of dimedone, aldehydes, and malononitrile. The catalyst can be isolated from the reaction mixture and reused at least 5 times.