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Directed Synthesis of Regioisomeric Monoaryl‐Substituted Pyridines Containing a Tricyanobutadiene Fragment and Study on Their Optical Properties
Author(s) -
Shishlikova Maria A.,
Ievlev Mikhail Yu,
Bardasov Ivan N.,
Ershov Oleg V.
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101440
Subject(s) - malononitrile , substituent , chemistry , intramolecular force , fragment (logic) , pyridine , ring (chemistry) , absorption (acoustics) , stereochemistry , combinatorial chemistry , organic chemistry , materials science , computer science , algorithm , composite material , catalysis
A series of regioisomeric monoaryl‐substituted pyridines containing a tricyanobutadiene fragment were prepared using modified known and novel developed synthetic approaches. Advantages and limitations of the used methods were discussed. Dependence of the optical absorption and emission characteristics on the position of aromatic substituent was studied. An unusual intramolecular charge transfer from malononitrile fragment to the pyridine ring was found, which was consistent with observed experimental and theoretical data.