Facile one‐pot synthesis of [1,2,4]triazolo[3,4‐b][1,3,4]thiadiazines and 3,7‐dimethyl‐4H‐[1,2,4]triazino[3,4‐b][1,3,4]thiadiazin‐6‐one using heteropolyacid catalysts |
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| Authors: | Radineh Motamedi Aazam Monfared Zohre Ghahghai Nezamabadi Fatemeh F Bamoharram |
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| Institution: | 1. Department of Chemistry, School of Sciences, Payam Noor University (PNU), Tehran, Iran;2. Department of Chemistry, Islamic Azad University, Mashhad, Iran |
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| Abstract: | 1,2,4]Triazolo3,4‐b]1,3,4]thiadiazines 2a , 2b , 2c , 2d , 2e , 2f and 3,7‐dimethyl‐4H‐1,2,4]triazino3,4‐b]1,3,4]thiadiazin‐6‐one 4 were synthesized by one‐pot cyclocondensation reaction with α‐chloroacetonitrile and α‐haloketones in the presence of catalytic amounts of heteropolyacids in very high yields and rates. J. Heterocyclic Chem., (2011). |
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