%0 Journal Article %T Fabrication of Heterogeneous-based Lacunary Polyoxometalates as Efficient Catalysts for the Multicomponent and Clean Synthesis of Pyrazolopyranopyrimidines   %A Zahra Yekke -Ghasemi %A Majid M. Heravi %A Masoume Malmir %A Ghazaleh Jahani %A Masoumeh Bagheri Bisafar %A Mirzaei Shahrabi, Masoud %J Inorganic Chemistry Communications %@ 1387-7003 %D 2022