Bis-DCM Type Dyes: Convenient Method for Synthesis of 2-(2, 6-bis(4-(dialkylamino)styryl)-4H -pyran-4-ylidene) Malononitrile Derivatives

Document Type : Research Article

Authors

Organic Synthesis Research Laboratory, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, I.R. IRAN

Abstract

An efficient and convenient method for synthesis of 2,6-bis (4-(dialkylamino) styryl)-4H-pyran-4-one starting from 4- (dialkylamino) benzaldehyde with 2,6-dimethyl-4H-pyran-4-onein the presence of MeONa as the base was described. Additionally, preparation of novel compounds with bis-DCM-type skeleton for application in organic light-emitting diodes was developed via reaction of malononitrile as active methylene group with 2,6-bis (4-(dialkylamino) styryl) -4H-pyran-4-one derivatives. 1H and 13C NMR, FT-IR spectroscopy supported the predicted structure of the products. The UV-Vis absorption spectra of synthesis compound were measured in diluted dichloromethane solution. Maximum absorption (lmax) values differ from 460 to 496 nm, this absorption is due to π-π* transition.

Keywords

Main Subjects

References

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Iranian Journal of Chemistry and Chemical Engineering
Volume 37, Issue 5 - Serial Number 91
September and October 2018
Pages 39-45

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