An unusual aromatisation of the dihydropyrimidine fragment in 6-nitro-7-substituted-4,7-dihydro-1,2,4-triazolo[1,5-a]pyrimidines has first been found to occur in parallel with reduction of the nitro group using a number of reducing agents. © 2007 Elsevier Ltd. All rights reserved.
Rusinov, G. L., Gorbunov, E. B., Charushin, V. N., & Chupakhin, O. N. (2007). An unusual aromatisation of dihydropyrimidines facilitated by reduction of the nitro group. Tetrahedron Letters, 48(33), 5873–5876. https://doi.org/10.1016/j.tetlet.2007.06.061