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Configurational assignments of oximes derived from 5‐formyl and 5‐acyl‐1,2,4‐triazines
Author(s) -
Rykowski Andrzej,
Guzik Eliza,
Makosza Mieczyslaw,
Holzer Wolfgang
Publication year - 1993
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570300222
Subject(s) - chemistry , homonuclear molecule , carbon 13 nmr , proton nmr , stereochemistry , organic chemistry , medicinal chemistry , molecule
The configuration of (3‐substituted)‐1,2,4‐triazin‐5‐ylcarbaldoximes and (3‐substituted)alkyl‐1,2,4‐triazin‐5‐ylketoximes was determined by means of 1 H‐nmr, 13 C‐nmr, 15 N‐nmr and homonuclear NOE‐difference spec‐troscopy. Oximes resulting from reaction of 1,2,4‐triazines with nitroalkanes were found to be either pure E ‐isomers or E/Z ‐mixtures with the amount of E ‐isomer greatly predominating. Detailed 13 C‐nmr data of the oximes investigated are presented.