Semnan University Press Applied Chemistry Today 2981-2437 9 33 2015 02 20 A new and efficient solid acid catalyst for the synthesis of 1,6-dihydropyrazine-2,3-dicarbonitriles, 1H-tetrazolyl-1H-1,4-diazepine-2,3-dicarbonitrile and 4,5,6,7-tetrahydro-1H-1,4-diazepine-5-carboxamide derivatives A new and efficient solid acid catalyst for the synthesis of 1,6-dihydropyrazine-2,3-dicarbonitriles, 1H-tetrazolyl-1H-1,4-diazepine-2,3-dicarbonitrile and 4,5,6,7-tetrahydro-1H-1,4-diazepine-5-carboxamide derivatives 51 64 690 10.22075/chem.2017.690 FA Journal Article 2017 01 15 https://chemistry.semnan.ac.ir/article_690_c06d06da9666a219db15cf575aff2824.pdf