NOVEL METHOD FOR THE SYNTHESIS OF 3-[(3-ARYLPYRAZOL-5-YL)METHYLIDENE]QUINOXALIN-2-ONES ON THE BASIS OF 2-METHYLCHROMONES
DOI:
https://doi.org/10.1007/3541Keywords:
3-(chromonylmethylidene)quinoxalin-2-ones, diethyl oxalate, hydrazine hydrate, 2-methylchromones, о-phenylenediamine, 3-(pyrazolylmethylidene)quinoxalin-2-onesAbstract
3-(Chromon-2-ylmethylidene)quinoxalin-2-ones reacts with hydrazine hydrate in boiling n-BuOH at the chromone moiety to form 3(3arylpyrazol-5-ylmethylidene)quinoxalin-2-ones in 47–86% yields.