A well-explained mechanism for synthesizing carbon dots (CDs) is not yet explored and still a subject of great debate challenge. This study used one-step hydrothermal method to prepare highly efficient, gram-scale, excellent water solubility, blue fluorescent nitrogen-doped (NCDs) with the particle size average distribution around 5 nm from 4-aminoantipyrine. The effects varying synthesis reaction times on structure formation NCDs were investigated using spectroscopic methods, namely FT-IR,...

Macrocycles play a pivotal and indispensable role within the realms of both medicine industry.

ABSTRACT This study presents a novel and simplified method for generating lanthanum‐nitrogen‐enriched carbon dots (La‐NCDs) in single step, using 2,2'‐(fumaroylbis(azanediyl))diacetic acid (FDG) as starting material. The resulting lanthanum‐nitrogen‐carbon were carefully analyzed their consistent structure, optical properties, size, all of which indicated successful activation. research then explored the antimicrobial potential both La‐NCDs FDG against common pathogens such Staphylococcus...

A number of 3‐[4‐(benzyloxy)‐3‐(2‐Chlorophenylazo)‐phenyl]‐5‐(substituted‐phenyl)‐1‐substituted‐2‐pyrazolines( 4a‐j) and (5a‐j) have been synthesized by diazotization 2‐chloroaniline its coupling reaction with 4‐hydroxy acetophenone, followed benzyloxation the hydroxyl group to give substrate [4‐benzyloxy‐3‐(2‐chlorophenylazo)‐acetophenone (1)].The prepared starting material (1) has reacted different substituted benzaldehydes a new series chalcone derivatives...

14.00 The starting material azo-benzyloxy acetophenone (2) has been synthesized in three steps; the direct diazotization of p -aminoacetophenone and its coupling reaction with m-cresol gave azo-acetophenone (1), which was benzylated -chlorobenzylchloride to give (2). later compound subjected one-pot three-component condensation substituted benzaldehydes phenylhydrazine presence sodium hydroxide afford target molecule azo-pyrazoline derivatives (3a-e) high yields short times. structures...

Produced zinc oxide nanoparticles utilizing Anethum graveolens extract has used for the preparation of 1 H -pyrazolo[1,2- a ]pyridazine-5,8-diones under solvent-free conditions and at 70 °C through three-component condensation reaction.

A new bis amide N-(4-methylphenyl)-2-(3-nitrobenzamide) benzamide was synthesized from a ring-opening reaction of 2-(3-nitrophenyl)-4H-benzoxazin-4-one, with 4-methyl aniline in shorten time (1.0 min) and characterized using different spectroscopic techniques (FT-IR, 1H-NMR, 13C-NMR) single-crystal X-ray diffraction (XRD). In the crystal lattice, molecules are linked by N–H···O C–H···O hydrogen bonds. The Hirshfeld surface analysis mapped over shape index, curvedness indices, dnorm revealed...

T hIs Article deals with the stepwise synthesis and spectroscopic characterization of some new azo benzofuran derivatives, started from diazotization substituted aniline coupled 2-hydroxy benzaldehyde.On reacting benzaldehyde p-bromo phenacyl bromide, (3a-g) are obtained.The structure derivatives have been characterized by using FT-IR, 1h-NMR,13C-NMR DEPT-135 NMR.The biological activity synthesized compound was obtained vitro anti oxidant microbial both Staphylococcus aureus Escherichia coli...

In this work, a series of new curcumin mono-carbonyl analogs containing benzyloxy moieties and their pyrazoline derivatives were synthesized using green method (ultrasound assisted technique) along with traditional method. The work also includes comparison between the two methods together literature. Remarkable improvements achieved by dropping down reaction time from hours to minutes obtaining higher yields products.

This article describes the controlled synthesis and characterization of azo oxazolone scaffold compounds containing multifunctional groups such as carbonyl group, imine carbon-carbon double bond. The reaction azo-oxazolone with aromatic amines led to ring-opening into corresponding azo-benzamide derivatives in a short time (average 10 min), resulting high yield (>90%). All newly synthesized were characterized by common spectral analysis UV, IR, 1H-NMR, 13CNMR, Elemental MS spectrometry.The...

p-Aminoacetophenone underwent diazotization and coupling reaction with 2-chlorophenol to give a starting material 4-(4-hydroxy-3-chlorophenyl)azoacetophenone.The prepared was benzylated benzylbromide producing 4-[4-benzyloxy-3-chloro-phenyl]azoacetophenone. The later has been reacted differentsubstituted benzaldehydes affording series of new chalcones. newly synthesizedchalcones were treated hydrazine hydrate form the desired molecules azobenzyloxy-pyrazoline derivatives. spectrum...

A series of a new chalcone derivatives (2a-i) containing benzyloxy moiety have been synthesized on the basis base catalyzed claisen –Schmidt condensation in high yields from reaction prepared starting material 3-(4-cholrobenzyloxy) paraldehyde (1)with different substituted acetophenones. The chalcones were treated with hydrazine hydrate according to Michael addition obtain pyrazoline deivatives (3a-i). Finally structures compounds elucidated by using spectral methods such as; FT-IR, 1H-nm,...

In the present study; 5-(4-chlorophenyl azo) -2-hydroxy acetophenone (1) was prepared by diazotization of 4-chloro aniline and its coupling reaction with 2-hydroxy acetophenone, then reacted different azo benzyloxy benzaldehydes(3a-i) to give new synthesized chalcones(4a-i). The later compounds were subjected oxidative cyclization catalytic amount I2 in DMSO affording target molecules flavones bearing two azo-linkages (5a-i). structures newly identified on bases their FT-IR, 1H-NMR, 13C-NMR...

The prepared starting material 2,4-bis (4-chlorobenzyloxy)acetophenone (1) has been reacted with different substituted benzaldehydes to give a series of new chalcones (2a-j).The were subjected react thiosemicarbazide according the Michael addition reaction afford thiocarbamoylpyrazoline derivatives (3a-j).A thiocarbamoyl group in compounds (3a-j) was cyclized p-bromophenacyl bromide 4,5-dihydropyrazolyl thiazoles (4a-j).The structures synthesized characterized by spectral methods: FT-IR, 1...

Some new azo-imine dyes have been synthesized via the diazotization of sulphanilic acid and its coupling reaction with salicylaldehyde giving a starting material 4-((3-formyl-4-hydroxyphenyl)diazenyl)benzenesulfonic acid. The later reacted different substituted anilines to give target [4-((3-((4-substitutedphenylimino)methyl)-4-hydroxyphenyl)diazenyl)benzenesulfonic acid] which were confirmed by using FT-IR, 1H-NMR 13C-NMR spectra. are used for dyeing performance on acetate, cotton, nylon,...

The conformation of the title compound, C 34 H 26 F 2 O 6 , is cone-shaped, partially determined by intramolecular C—H...O short contacts. benzene rings at top cone are inclined to one another 73.10 (7)°, while bottom 35.49 (8)°. In crystal, molecules linked and C—H...F hydrogen bonds, forming a three-dimensional supramolecular structure. There also C—H...π contacts present within framework

Abstract This article describes the controlled synthesis and characterization of an olefin‐linked oxazolone scaffold compound containing multifunctional groups, including carbonyl group, imine, carbon‐carbon double bond. The reaction bisoxazolone with aromatic amines led to ring‐opening into corresponding bisdiamide derivatives in a short time (average 10 min), resulting high yield (>90 %). compounds were characterized by FT‐IR, 1 H‐NMR, 13 C‐NMR, MS. Besides, screened against Escherichia...