Synthesis and physicochemical properties of merocyanine dyes based on dihydropyridine and fragments of cyanoacetic acid derivatives

Irina A Borisova,Andrey A Zubarev,Lydmila A Rodinovskaya,Anatoliy M Shestopalov,Jacques Royer

doi:10.24820/ark.5550190.p009.908

Abstract

Synthesis and physicochemical properties of merocyanine dyes based on dihydropyridine and fragments of cyanoacetic acid derivatives

Highlights

Work on the merocyanine dyes, which has intensively been performed since the middle of the 20th century,1-14 presently remains urgent
This work is devoted to the synthesis of a series of merocyanine dyes based on N-substituted picolinium salts and cyanoacetic acid derivatives, which allows a study of the dependence of the physicochemical properties of the synthesized compounds on the structure
The target compounds of the 1,2- (6a-l) and 1,4-dihydropyridine structures (7a-i) were synthesized from the corresponding salts of α- or γ-picolinium salts with different substituents at the nitrogen atoms (Scheme 1)

Summary

Introduction

Work on the merocyanine dyes, which has intensively been performed since the middle of the 20th century,1-14 presently remains urgent. The merocyanine dyes containing the dihydropyridine fragment as a donor moiety and cyanoacetic acid and its derivatives as an acceptor moiety are insufficiently studied, and the data on these compounds are substantially fragmented.18-22

Results

Conclusion