351440-26-1Relevant articles and documents
Cyclization Reactions of Hydrazones XXVII Synthesis and oxidative cyclization of some formazan-substituted quinoxaline-2-ones
Wiedermannova, Iveta,Slouka, Jan
, p. 55 - 60 (2001)
A series of 1,5-diaryl-3-formazylglyoxylic acids 1a-1f was prepared by azocoupling of diazonium salts with sodium pyruvate. These compounds gave the corresponding 3-(1,5-diaryl-3-formazyl)-1,2-dihydro-quinoxaline-2-ones 2a-2f by condensation with o-phenyl