A simple and efficient approach to the synthesis of 1-phosphonated 5-amino-1-H-[1,2,4]-triazole from N-functionalized imidates

In this study, we describe a new and easy synthetic approach to variously substituted triazoles based on the reaction of imidates with phosphorylated hydrazine in good yields. A general mechanism of the reactions was also proposed. Characterization of the products was carried out by several analytical and spectroscopic tools including infrared and nuclear magnetic resonance spectroscopies (¹H, ¹³C NMR, ³¹P NMR).     

Heterocyclic quinones with bridgehead nitrogen atoms. Part I. Pyrrolo[1,2-a]quinoxaline-6,9-dione and pyrrolo[2,1-c][1,2,4]benzotriazine-6,9-dione

The synthesis and some reactions of pyrrolo[1,2-a]quinoxaline-6,9-dione and pyrrolo[2,1-c][1,2,4]benzotriazine-6,9-dione are described.