- Oxidative ammonolysis of 2-methylquinoxaline on vanadium-titanium oxide catalyst
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The behavior of 2-methylquinoxaline in the course of oxidative ammonolysis on V-Ti oxide catalyst in a wide range of conditions was studied, and this reaction was examined as a route to 2-quinoxalinecarbonitrile.
- Postnikov,Korovina,Kagarlitskii,Krichevskii
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p. 320 - 322
(2008/09/19)
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- AN UNEXPECTED RING-OPENING IN THE REISSERT REACTION ON 2,3-DIPHENYLQUINOXALINE-N-OXIDE.
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When quinoxaline-N-oxide 1 is reacted with KCN and benzoyl chloride in water (the Reissert reaction) or methanol, the products are 2-, 5- and 6- chloroquinoxaline (the latter being the major product: 42+/-6percent) and small amounts of 2-cyanoquinoxaline.Using three equivalents of trimethylsilyl cyanide instead of KCN, and dichloromethane as the solvent, leads to a 72percent yield of 2-cyanoquinoxaline.The reaction of trimethylsilyl cyanide and benzoyl chloride with 2,3-diphenylquinoxaline-N-oxide 2 leads to an unexpected ring-opening product 13; its structure is based on spectroscopic data and on an X-ray crystallographic analysis.
- Nasielski, J.,Heilporn, S.,Nasielski-Hinkens, R.,Tinant, B.,Declercq, J. P.
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p. 7795 - 7804
(2007/10/02)
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