
Heterocyclic Communications p. 55 - 60 (2001)
Update date:2022-08-04
Topics:
Wiedermannova, Iveta
Slouka, Jan
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
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(1938)