caa a22 4500 46799269X CHVBK 20180323112549.0 cr unu---uuuuu 170328e19900401xx s 000 0 eng 10.1007/BF00497221 doi (NATIONALLICENCE)springer-10.1007/BF00497221 Oxidation of 2,5-dimethylpyrazine with oxygen in the vapor phase on oxide catalysts and in the liquid phase in the presence of bases [Elektronische Daten] [I. Iovel', I. Yansone, Yu. Gol'dberg, M. Shimanskaya] The vapor-phase oxidation of 2,5-dimethylpyrazine with oxygen on vanadium-molybdenum oxide catalysts modified with silver oxide gives 5-methyl-2-formylpyrazine and 2,5-diformylpyrazine in 37% and 35% yields, respectively. Pyrazine-2,5-dicarboxylic acid was obtained in 53% yield by the liquid-phase oxidation of 2,5-dimethylpyrazine with oxygen in the presence of a strong base and an interphase catalyst. Plenum Publishing Corporation, 1990 Iovel' I. Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut Yansone I. Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut Gol'dberg Yu Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut Shimanskaya M. Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/4(1990-04-01), 456-461 0009-3122 26:4<456 1990 26 10593 https://doi.org/10.1007/BF00497221 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00497221 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Iovel' I. Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut NATIONALLICENCE 700 1- Yansone I. Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut NATIONALLICENCE 700 1- Gol'dberg Yu Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut NATIONALLICENCE 700 1- Shimanskaya M. Institute of Organic Synthesis, Latvian Academy of Sciences, 226006, Riga aut NATIONALLICENCE 773 0- Chemistry of Heterocyclic Compounds Kluwer Academic Publishers-Plenum Publishers 26/4(1990-04-01), 456-461 0009-3122 26:4<456 1990 26 10593 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer