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A Comparison of Chemical and Photochemically Induced Reduction of Some 2(4),5‐Dihydro‐1,2,4‐triazines and Aromatic 1,2,4‐Triazines
Author(s) -
Nagy József,
Horváth Anikó,
Szöllösy Áron,
Nyitrai József
Publication year - 1999
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/(sici)1099-0690(199903)1999:3<685::aid-ejoc685>3.0.co;2-7
Subject(s) - chemistry , triazine , ring (chemistry) , electrochemistry , chemical reduction , contraction (grammar) , reaction mechanism , reduction (mathematics) , medicinal chemistry , photochemistry , stereochemistry , combinatorial chemistry , organic chemistry , catalysis , geometry , mathematics , medicine , electrode
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.