Photochemistry of N-heterocycles, 6.*Effect of substituents on photochemically induced reduction of some 2(4),5-dihydro-1,2,4-triazines

Zoltán Madarász, Csaba Hertelendi, József Nagy, Jenö Fekete, Mária Kajtár-Peredy, József Nyitrai

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The photochemically induced ring contractions have been extended to 3-aryl-5,6-diphenyl-2,5-dihydro-1,2,4-triazines in order to study the effect of the electron-withdrawing and -donating groups at position 4 of the 3-aryl group. Relative reaction rates have been measured and ratio of the extrusion of N(1) / N(2) in the 2-methyl series were studied. Results are supporting our hypothetic mechanism.

Original languageEnglish
Pages (from-to)393-405
Number of pages13
JournalACH - Models in Chemistry
Issue number4
Publication statusPublished - Dec 1 1999


ASJC Scopus subject areas

  • Chemistry(all)

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