%0 Conference Proceedings %T Synthesis of Various Derivatives of a Novel Heterocyclic System of Tetrazolo[1,5-a][1,2,3]triazolo[4,5-d]pyrimidine %A Dindar Fouladloo, Niloofar %A Sheikhi-Mohammareh, Seddigheh %A Shiri, Ali %J The 26th Iranian Seminar of Organic Chemistry %D 2019