Synthesis of 15n-labeled isomers of 5-nitro-2, 4-dihydro-3h-1, 2, 4-triazol-3-one (nto)
The synthetic routes to 15N labeled 5-nitro-2, 4-dihydro-3H-1, 2, 4-triazol-3-one (NTO) isomers are reported. Isomers labeled on N(6), N(4) and both N(1) and N(2) have been made. These compounds were identified by 1H, 13C, and 15N NMR and by mass spectral analysis. In many cases unequivocal NMR and mass spectral assignments were made. © 1995 Taylor & Francis Group, LLC.