POLYAROMATIC AMINES ARE INTERESTING COMPOUND TO THEIR EFFICIENT APPLICATIONS IN ELECTROPHOTOGRAPHY AND ELECTROLUMINESCENT DEVICES [1].THE ETHYNYL GROUPS ARE INTEREST AS A CONJUGATING GROUP BECAUSE THE TWO ATTACHED SUBSTITUENTS CAN ROTATE AND REMAIN CONJUGATED [2]. IN THIS WORK, AROMATIC AMINES LINKED BY ETHYNYL GROUPS HAVE BEEN SYNTHESIZED. A SIMPLE AND EFFICIENT METHOD FOR THE SYNTHESIS OF THESE AROMATIC AMINES CARRIED OUT USING COPPER IODIDE NANOPARTICLES (CUI NPS) AS CATALYST AND TRI ETHYL AMINE AS THE BASE. THIS METHOD DEMONSTRATED THESE COMPOUNDS WERE FORMED IN HIGH YIELDS WITH SHORT REACTION TIMES BY USING CUI NPS AT ROOM TEMPERATURE.

THE CU(I)-CATALYSED AZIDES AND ALKYNES CYCLOADDITION NAMED AS “CLICK CHEMISTRY” IS WIDELY USED IN POLYMER SYNTHESIS[1]. THE SYNTHESIS AND CHARACTERIZATION OF A NEW TYPE TRIAZOLE CONTAINING COPOLYMER USING COPPER CATALYSED CLICK POLYCONDENSATION IS REPORTED. THE REACTION WAS PERFORMED UNDER MILD CONDITION USING 3, 6-DIAZIDO-9-BUTYL-9H-CARBAZOL-2-YLIUM, 2, 6-BIS (4-ETHYNYL-2, 6-DIISOPROPYLPHENYL) PYRROLO[3, 4-F]ISOINDOLE-1, 3, 5, 7(2H, 6H)-TETRAONE AND 5-AZIDO-2-((4-AZIDOPHENYL)(4-HEXYLPHENYL)AMINO)BENZENE-1-YLIUM AS MONOMERS. THE MONOMERS AND COPOLYMER WERE CHARACTERIZED VIA SPECTROSCOPIC METHODS.

ONE-POT MULTI COMPONENT REACTIONS (MCRS) ARE AN ATTRACTIVE SYNTHETIC STRATEGY [1-2] TO GENERATE MULTIPLE MOLECULAR SCAFFOLDS AND TO INCREASE STRUCTURAL AS WELL AS SKELETAL DIVERSITY FROM SIMPLE AND EASILY AVAILABLE MOLECULES. ACTIVATION OF A TERMINAL ALKYNE C–H BOND BY TRANSITION METAL CATALYSTS IS A REACTION OF FUNDAMENTAL INTEREST IN ORGANIC SYNTHESIS [3]. ONE OF THE BEST EXAMPLES OF SUCH A PROCESS IS THREE COMPONENTS COUPLING OF ALDEHYDES, ALKYNES, AND AMINES (A3-COUPLING). WE REPORT A HIGHLY EFFICIENT THREE-COMPONENT COUPLING OF ALDEHYDES, AMINES, AND ALKYNES (A3-COUPLING) CATALYZED BY NANO BOEHMITE-CUI (SCHEME 1).

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

A HIGH-YIELDING AND FACILE METHODOLOGY FOR THE COPPER-CATALYZED SYNTHESIS OF 5-SUBSTITUTED 1H-TERAZOLES IN WATER IS REPORTED IN THE PRESENCE OF COPPER NANOPARTICLES (NPS) ON MODIFIED POLY(STYRENE-CO-MALEIC ANHYDRIDE) [SMA] CATALYST. THE POLYMER-SUPPORT IS EASILY PREPARED FROM THE REACTION OF SMA WITH 4-AMINOPYRIDINE, AND SUBSEQUENTLY UNDERGOES TO THE REACTION WITH IN SITU PREPARED CUI NPS. THE CATALYST WAS CHARACTERIZED BY SEM, EDAX, FTIR AND ICP AND IS APPLIED FOR THE PREPARATION OF TERAZOLES UNDER AIR, IN GOOD YIELD, AND NO CHROMATOGRAPHIC SEPARATION OF THE PRODUCTS. THE CATALYST CAN BE USED WITHOUT PRE-ACTIVATION AND RELOADED FOR AT LEAST 5 RUNS WITHOUT SIGNIFICANT DECREASE IN ITS ACTIVITY.

IN THIS WORK, CUI NANOPARTICLES ON MODIFIED POLY (STYRENE-CO-MALEIC ANHYDRIDE) IS UTILIZED AS A HIGHLY EFFICIENT, HETEROGENEOUS AND RECYCLABLE CATALYST FOR THE PREPARATION OF BIOLOGICALLY ACTIVE SUBSTITUTED HANTZSCH 1, 4-DIHYDROPYRIDINE VIA ONE-POT MULTI-COMPONENT CONDENSATION OF AROMATIC ALDEHYDES, 1, 3-DICARBONYLS AND AMMONIUM ACETATE UNDER SOLVENT-FREE CONDITIONS. THIS CATALYST CAN BE RECYCLED WITHOUT PRE-ACTIVATION AND RELOADED UP TO 3 CONSECUTIVE RUNS WITHOUT SIGNIFICANT DECREASE IN ITS EFFICIENCY.

MULTICOMPONENT REACTIONS (MCRS) HAVE BEEN PROVED TO BE AN EFFICIENT METHOD TO APPROACH COMPLEX STRUCTURES IN A SINGLE SYNTHETIC OPERATION FROM SIMPLE BUILDING BLOCKS. ADVANTAGES OF MCRS ARE HIGH SELECTIVITY, HIGH ATOM ECONOMY, AND PROCEDURAL SIMPLICITY DUE TO THE FORMATION OF CARBON–CARBON OR CARBON– HETEROATOM BONDS IN ONE POT [1, 2]. XANTHENES ANDBENZOXANTHENES HAVE BEEN REPORTED TO POSSESS DIVERSE BIOLOGICAL AND THERAPEUTIC PROPERTIES, SUCH AS ANTIBACTERIAL, ANTIVIRAL, AND ANTI-INFLAMMATORY ACTIVITIES. OTHER USEFUL APPLICATIONS OF THIS HETEROCYCLESARE AS DYES, FLUORESCENT MATERIALS FOR VISUALIZATION OF BIOMOLECULES, AND IN LASER TECHNOLOGIES [3].IN THIS RESEARCH, THE SYNTHESIS OF BENZOXANTHEN DERIVATIVES HAVE BEEN SURVEYED VIA ONE POT THREE COMPONENT REACTION OF 2-NAPHTHOL AND ALDEHYDES WITH THE NAPHTHOQUINONE STRUCTURE. IN THIS WORK, WE DECIDED TO USE COPPER IODIDE NANOPARTICLES AS A NOVEL HETEROGENEOUS CATALYST FOR THE SYNTHESIS OF BENZOXANTHENES. WIDE RANGE OF PRODUCTS, EXCELLENT YIELDS IN SHORT TIME AND MILD REACTION CONDITIONS ARE SOME OF THE IMPORTANT FEATURES OF THIS PROTOCOL. NOTABLY, THIS CATALYST COULD BE RECYCLED AND REUSED FOR SEVERAL TIMES.