Green corrosion inhibitors are of recent interest because their cost-effectiveness, biodegradability, and eco-friendly characteristics. Plant extracts have been recognized as valuable resources for the inhibition metallic alloys. Out those, one most important properties is to exhibit excellent on metal surfaces. In present paper, efficiency Citrus limetta, commonly known Mosambi peel extract mild steel surfaces in an acidic environment has reported through investigation by some...

Here, we report the fabrication of nZVI by wet chemical technique in presence ethanol using ferric iron and sodium borohydride as reducing agents under ambient conditions. The obtained particles are mainly a zero-valent oxidation state do not undergo significant for several weeks. structural morphological parameters were investigated UV, XRD, SEM, EDX, TEM, DLS analysis. optical nature, bandgap energy, absorption edge all revealed UV–visible spectrum. phase development crystallinity shown...

Abstract The present investigation targets the physical, mechanical, and thermal characteristics of glass fabric‐reinforced vinyl ester/polyester hybrid laminates filled with ferrous, nickel, tungsten micro‐particles. metal‐fillers‐glass fabric reinforced composites was produced by distributing 1 wt% an ultrasonication probe‐assisted wet layup method. Polyester resin fabrics fillers (PRGT) presents improved mechanical compared other laminates, tensile, compression, flexural strength values...

Novel 6-(5'-fluoro-2'-diphenylphosphorylanilido)-3-hydrazino-1,2,4-trizin-5 (2H) one (3) is achieved from hydrozinolysis of the corresponding 3-thioxo-analoges 2. Compound 2 also obtained phosphorylation 6-(5'-fluoro-2'-aminophenyl)-3-thioxo-1,2,4-triazin-5(2H) (1). fluorine substituted isolated and/or fused heterobicyclic nitrogen systems bearing containing, 6-phosphoryl anilido-1,2,4-trizin-5 moiety (4 - 22) have been synthesized ring closure reactions compound 3 with π-acceptors activated...

Abstract Eco‐friendly cross‐linked poly(methyl methacrylate)/multiwall carbon nanotube nanocomposites with general abbreviation (C‐ PMMA / CNT s 1‐5 ) have been synthesized and applied efficiently for environmental treatment from methyl green ( MG dye. C‐ were prepared via in situ polymerization method using 1,12‐diaminododecane as the cross‐linker. enforced variable loading (2, 5, 10, 20 40) wt% while cross‐linking occurred. The fabricated spectroscopically regarded by common...

New fluorine substituted 6-(5’-fluoro-2’-triphenylphosphiniminophenyl) 3-thioxo-1,2,4-triazin-5 (2H, 4H) one (2) was obtained via Wittig’s reaction of the corresponding 6-(5’-fluoro-2’-amino-phenyl)-3-thioxo-1,2,4-triazinone (1). Behavior compound 2 towards alkylating agents and/or oxidizing studied were, N-hydroxyl (3), Mannich base (4,5), S-alkyl (6,7,8) and thiazolo [3,2-b][1,2,4] triazinones (10-14) or 3-disulfide (18), 3-sulfonic acid 19 1,2,4-triazin-3,5-Dionne (20) derivatives...

For the creation of adaptable carbonyl compounds in organic synthesis, oxidation alcohols is a crucial step. As sustainable alternative to harmful traditional processes, transition-metal catalysts have recently attracted lot interest acceptorless dehydrogenation reactions alcohols. Here, using well-defined, air-stable palladium(II)–NHC (A–F), we demonstrate an effective method for catalytic (CAD) reaction secondary benzylic produce corresponding ketones and molecular hydrogen (H2). Catalytic...

Abstract A series of new 2-phenyl-7-methyl-1,8-naphthyridine derivatives with variable substituents at C3 were synthesized for an in vitro evaluation their anticancer activity against human breast cancer cell line (MCF7). On one hand, compounds 3f , 6f 8c and 10b showed IC 50 values (6.53, 7.88, 7.89, 7.79 μM, respectively) compared to that the mentioned drug staurosparine (IC = 4.51 μM). other 10c 8d 4d 10f 8b displayed better than staurosporin (1.47, 1.62, 1.68, 2.30, 3.19 respectively).

In search for highly bioactive barbituric and thiobarbituric acid derivatives, some new acids bearing 1,2,4-triazine moiety their related systems ( 5 – 13 ) have been obtained from the addition of isocyanate isothiocyanate to 3-amino-5,6-diphenyl-1,2,4-triazine 1 followed by ring closure reactions with diethyl malonate. Also, chemical reactivities were condensation derivatives aromatic aldehyde and/or fluoroacylation reactions. The structure all products was deduced both elemental analysis...

In a search for new antimicrobial agents, some spiro[indol-thiazolidon- 2,4-diones] (6a-c) were synthesized by condensation of 5-substituted isatins 1 with sulfanilamide in MeOH, followed aroylation p-nitrobenzoyl chloride DMF to get compounds 4a-c. Cycloaddition 4a-c thioglycolic acid dry non-polar solvent (dioxane) gave the targets 6a-c. Also, bis(5-fluorospiro[indoline-3,2'-thiazolidine]-2,4'-dione) (9) was 5-fluoroindoline-2,3-dione benzene-1,4-diamine (2:1 mol) which cycloaddition...

Ultrasound-assisted synthesis of novel pyrazoles using Ni-Mg-Fe LDH as a catalyst in cyclopentyl methyl ether (CPME) is introduced. Different LDHs were tested for the via 1,3-dipolar cycloaddition reaction. Among them, was superior this This protocol offered high yields, short reaction time, and green solvent, with reuse six times same activity, it could be regarded an ecofriendly, greener process. The NiMgFe smallest particle size (29 nm) largest surface area showed its efficacy 1,3 dipolar...

Novel 6(3-1H-1,2,4-triazol-1-yl)-3-phenylquinazoline-2,4(1H,3H)-diones ( 7a–e ) were synthesized from different enaminones 6a–e with 6-hydrazinyl-3-phenylquinazoline-2,4(1H,3H)-dione. 2,6(4-2-Substituted-1,3,5-triazin-1(2H)-yl)-3-phenylquinazoline-2,4(1H,3H)-diones 8a–k the reaction of 1-(2,4-dioxo-3-phenyl-1,2,3,4-tetrahydroquinazolin-6-yl)thiourea, urea, or guanidine 3a–c ), and a series 3-substituted-2-imino-1,3,5-triazin-1(2H)-yl-sulfonyl-phenyl-1-methylquinazoline-2,4(1H,3H)-dione 12a–j...

The behavior of 3-hydrazino-6-aryl-1,2,4-triazin-5-one towards the active electrophilic compounds in polar and/ or non-polar solvents and various times temperatures, has been studied. N-[2-(3-(3/5-(4-Nitrophenyl)-5/3-thioxo-1H-1,2,4-triazol-1-yl)-5-oxo-1,2,4-triazin-6-yl)phenyl]pivalamides were obtained from reaction N-(2-(3-hydrazineyl-5-oxo-1,2,4-triazin-6-yl)phenyl)-pivalamide with 4-nitrobenzoyl isothiocyanate THF EtOH-piperidine respectively. Also, was shown a strong nucleophilic by...

Benzotriazole-activated pyrazinoic acid was utilized as a versatile building block for the efficient and convenient synthesis of novel hybrid conjugates with secondary amines via amino linkers in high yields.

An efficient, economical, and green, sustainable synthesis of fused azines using Mg-Al hydrotalcite under a high-pressure Q-Tube reactor has been developed. This reaction proceeds through the aza-Michael addition α,β-unsaturated ketone with different aminoazoles. method offered excellent yields in short time that economically saved energy to protocol showing reuse catalyst seven times without losing its catalytic activity.

In this study, distinctly defined, air-stable, novel binuclear nickel (II) complexes (1−2) namely 3,3-bis[(2,4,6-trimethyl)iminomethyl]-[1,1'-binaphthalene-2,2'-dioxodinickel(II)(1) and 3,3′-bis-[(2,6-diethyl-phenyl)iminomethyl]-[1,1']-binaphtyl-2,2'-dioxonickel(II)(2) are presented. The complexes, [Ni(H2L1)]2 (1) [Ni(H2L2)]2 (2) were produced by the reaction of binaphthyl–based tetradentate N2O2 donor ligands H2Ln (n= 1, 2) with nickel(II) acetate tetrahydrate. Several methods used to...