Synthesis of 6-(2-nitrobenzyl)-3,5-dioxo-2,3,4,5-tetrahydro-as-triazine and some derivatives

6-(2-Nitrobenzyl)-3,5-dioxo-2,3,4,5-tetrahydro-as-triazines were prepared as intermediates for investigations aimed at the synthesis of as-triazino[5,6-b]quinolines. The substances were obtained by new methods based on the elucidation of stereochemical conditions.