Photochemistry of N-heterocycles, 5: A comparison of chemical and photochemically induced reduction of some 2(4),5-dihydro-1,2,4-triazines and aromatic 1,2,4-triazines

József Nagy, Anikó Horváth, Áron Szöllösy, József Nyitrai

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Chemical reduction (Zn/AcOH) of the arene 1 and of 2(4),5-dihydro-1,2,4- triazine 7 has been reinvestigated, resulting in the amendment of literature data concerning this reaction. Chemical, electrochemical, and photochemically induced reductions and ring contractions of 1,2,4-triazine derivatives have been compared. The first example of a triaryl-1,4-dihydrotriazine has been prepared. Some further evidence is presented that supports the proposed mechanism of the photochemically induced reduction and ring contraction of 1,2,4-triazines.

Original languageEnglish
Pages (from-to)685-689
Number of pages5
JournalEuropean Journal of Organic Chemistry
Issue number3
Publication statusPublished - Mar 1 1999

Keywords

  • 1,4-Dihydro-1,2,4- triazine
  • Chemical reduction
  • Photochemical reduction
  • Ring contractions
  • Single-electron transfer

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry

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