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Synthesis, characterization, photophysical properties, and investigation of enzyme inhibition activities of quinazoline based chiral hydrazine-carbothioamides

In this study, two novel chiral quinazoline-thiosemicarbazone compounds (10a and 10b) were synthesized from (L)-valine via a multistep route involving hydroxyl protection, chlorination, hydrazination, isothiocyanate addition, and TBDMS deprotection. Structures were confirmed by ¹H-NMR, ¹³C-NMR, and IR spectroscopy. Pho...

İsmail Pişkin · 0 citations
Open access Sep 2026

One-Pot Synthesis of Dihydrothiazole-Hydrazone Hybrids and Evaluation of Their Absorption and Emission Properties.

A simple, one-pot method for the synthesis of seven novel dihydrothiazole-hydrazone compounds is presented, employing a condensation-cyclization protocol, with the products characterized by FTIR, 1H NMR, 13C NMR, and ESI-MS. Thiazoles and hydrazones are distinguished by versatile chelating properties and fluorescent co...

Charan D. C., Y. M., Nitinkumar S. Shetty · 0 citations
Oct 2026

Studies on the convenient synthesis, fluorescence properties and bioactivity of chromenonitriles.

The synthesis of chromenonitriles remains largely underexplored, primarily due to the limited availability of suitable substrates and the generally unsatisfactory yields of existing methods. Herein, we report a new method that enables the efficient construction of chromenonitriles under mild, metal-free conditions, usi...

Sheng-Yu Li, Zhong-Hao Li, Chu-Ming Pang et al. · 0 citations
Open access Sep 2026

POLYAZOMETHINE–ZN(II) COMPLEXES WITH TUNABLE THERMAL, ELECTROCHEMICAL AND ANTIMICROBIAL PROPERTIES: SYNTHESIS, CHARACTERIZATION AND STRUCTURE–PROPERTY RELATIONSHIPS

Polyazomethines are π-conjugated Schiff-base polymers whose azomethine nitrogen atoms provide coordination sites for metal ions and thereby offer a convenient route to multifunctional materials. In the present study, four aromatic polyazomethines were synthesized by condensation of p-phthalaldehyde with 4,4′-diaminodip...

Sadiq ur Rahman, Shah Wali Khan, F. Fazal et al. · 0 citations
Open access Oct 2026

Synthesis, Characterization and Dielectric Properties of Biphenyl Group Containing Polymaleimide and Cyanate Ester Copolymer

In order to improve the solubility and dielectric properties of maleimide resin, polymaleimide (PMI) was prepared from maleic anhydride and polyarylamine containing biphenyl group (PBPPA), which was synthesized from 4,4′‐bis(chloromethyl)‐1,1′‐biphenyl and aniline. The chemical structure and molecule weight of PBPP...

Yi-Qing Xia, Ren-Fei Zhang, Yu-Ping Sheng et al. · 0 citations
Open access Oct 2026

Synthesis and Photophysical Properties of Electroactive Apocynin Derivatives as Potential Luminogens and Cellular Bioimaging Agents

This study describes the synthesis, photophysical characterization, and bioimaging properties of a series of chalcones derived from apocynin, functionalized with electroactive groups such as phenyldimethylamine (1), triphenylamine (2), tetraphenylethylene (3), and pyrene (4). These molecules featured donor−π–acceptor...

Camila García-Aquite, L. Illicachi, Joel José Montalvo-Acosta et al. · 0 citations

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