A mixture of 6-nitro-2-hydrazino benzothiazole (I) on heated with diethyl oxalate (II) in presence of pyridine gives 3,4-dihydro-8-nitro-2H-1,2,4-triazino[3,4-b] benzothiazole-3,4-dione (III). Which on further reaction with different heteryl amines such as morpholine, pyrrolidine and piperidine afforded Mannich bases (IV a-c).
Cite this article:
Anil Chidrawar. An effective one pot synthesis of 3, 4-dihydro-8-nitro-2H-1, 2, 4-triazino[3,4-b] benzothiazole-3,4-dione and its derivatives. Asian J. Research Chem. 2017; 10(2):217-220. doi: 10.5958/0974-4150.2017.00036.0