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Abstract
This study was undertaken to report the swift, facile and convenient synthesis of novel hydrazones obtained by condensation reaction between 2‐Amino‐3‐formylchromone and hydrazine derivatives. Various characterization techniques such as MALDI Mass, FTIR, 1HNMR and 13CNMR spectrum analysis was done to determine the chemical structure of these novel six hydrazones. Furthermore, UV‐Vis and fluorescence spectra was studied to calculate λmax and εmax. These hydrazones are quite useful for their facile synthesis and chemical structure. Such hydrazones require separate clinical research to find their applications in biomedical fields.
Highlights
Hydrazones are special organic compounds derived from the Schiff-base family and comprising of C N N C bonds with additional donor sites
Due to the aforementioned applications of hydrazones, we have reported the quick, facile, and convenient synthesis of six novel hydrazones containing N, O, or S atoms derived from Chromone
In 13CNMR spectra of these hydrazones, four key resonance signals were observed. These are δ 153.0-153.4 for azomethine (-CH= N-), carbonyl carbon of chromone ring roughly at δ 162.9165.0, carbon of chromone ring attached to carbon of azomethine at δ 92.6-92.8, and δ 173.3-173.7 for the carbon (– C-NH2) on the chromone ring in all hydrazones
Summary
Hydrazones are special organic compounds derived from the Schiff-base family and comprising of C N N C bonds with additional donor sites. The donor sites make hydrazones more flexible and versatile for their structural and functional properties [1]. Different studies have reported the biological importance of trigonal hybridized nitrogen atom in azomethine group of hydrazones which is remarkable for having one pair of electrons in its either π or sp orbitals [3, 4]. Their hetero atomic nature and specific electronic properties make them very important structural compounds [5]. Some researchers have reported the synthesis of polymeric hydrazones with remarkable properties such as high glass transition temperatures, good filmformation and moderate charge transport [6]
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