Synthesis and Characterization of Some New 4-Hydroxy-coumarin Derivatives

Al-Majedy, Yasameen K.; Kadhum, Abdul Amir H.; Al-Amiery, Ahmed A.; Mohamad, Abu Bakar

doi:10.3390/molecules190811791

Cited by 27 publications

(14 citation statements)

References 23 publications

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“…Corrosion inhibitors naturaly or synthetic were dominant, tools used in oil and gas industries due to barriers formation to protect the alloys and metals surfacesf against corrosive acids or bases solutions. The majority of used inhibitors that have one or more nitrogen, oxygen and/or sulfur atoms, such as pyridines, imidazoles rings [42][43][44] in addition to polymers with heterocyclic rings [45].…”

Section: Results Of Weight Loss Techniquementioning

confidence: 99%

New Corrosion Inhibitor Derived from Coumarin

Al-Amiery¹

2017

Preprint

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New corrosion inhibitor derived from coumarin-3-amine namely 3-((2-chlorobenzylidene)amino)coumarin was synthesized and characterized by CHN elemental analysis in addition to Fourier transform infrared and nuclear magnetic resonance techniques. The anticorrosion ability of 3-((2-chlorobenzylidene)amino)coumarin to inhibit the impacts of corrosion has been demonstrated and damage reduction of the mild steel also. 3-((2-chlorobenzylidene)amino)coumarin, has been employed as a good corrosion inhibitor for mild steel in HCL solution. The efficiency of the inhibition was figured according to weight loss method and it was 74.6%.

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Section: Results Of Weight Loss Techniquementioning

confidence: 99%

New Corrosion Inhibitor Derived from Coumarin

Al-Amiery¹

2017

Preprint

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“…43 Rao and Reddy synthesized new compounds (24, 25, 26, and 27) and screened for their anti-inflammatory activity using carrageenan induced paw oedema method. Among the synthesized compounds (24) possesses good anti-inflammatory when compared to that of other synthesized compounds and (25,26,27) showed moderate anti-inflammatory activity. 44…”

Section: Anti-inflammatory Activitymentioning

confidence: 98%

A Systematic Review on Pharmacological Activities of 4-Methylumbelliferon

Al-Majedy

Kadhum²,

Ibraheem

et al. 2018

SRP

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Umbelliferon, the natural crenelated coumarin distributed in the plants of a piaceae family, has shown various biological activities, especially as a cancer chemo preventive agent. Coumarins have been categorized as a member of family of benzo-pyrone, that consist of pyrone ring united to benzene ring. The benzo-pyrones may be sectioned to alfa type that coumarins belong and the gama type that flavonoids have been major members. Coumarins are chemical entity which has being synthesized in the past few years many forms of its derivatives; the entity provides the principal origin of motivating to numerous chemist to investigate its diverse medical efforts especially with regards to the anticoagulant activity. In present article we review recent 4-Methylumbelliferon, (4-MU) that are synthesized with it pharmacological activities antioxidant, anti-inflammatory, antimicrobial activity, ant hepatitis, hepatoprotective, anticancer, antipyretic and analgesic activity.

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“…Inhibitor molecules are adsorbed on the surface of mild steel forming a barrier and consequently preventing reactions (cathodic or anodic) from processing at the surface of mild steel. These inhibitors could react with the iron atom at the mild steel surface to form inorganic complexes, blocking the surface of mild steel (22)(23)(24)(25)(26). Due to the high cost, toxicity, and hazardous of synthesized corrosion inhibitor (27)(28)(29), the examination of plant extract as corrosion inhibitors is presently interesting (30)(31)(32).…”

Section: Introductionmentioning

confidence: 99%

Inhibitive impacts extract ofCitrus aurantiumleaves of carbon steel in corrosive media

Dakhil

Gaaz

Al-Amiery

et al. 2018

Green Chemistry Letters and Reviews

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Relatively inexpensive, stable plant extract, namely Citrus aurantium leaves, was employed as highly efficient inhibitor of carbon steel corrosion by corrosive acid. The inhibition efficiency was estimated based on the weight loss method. Inhibition impacts of researched inhibitor increase with the concentration of the plant extract increase. The inhibition efficiency depends on three factors: molecular structure, concentration, and molecular weight of the inhibitor. Inhibition efficiency of 81.2% was achieved with 20% (v/v) of the extract in 1 M hydrochloric acid during 3 h at 25°C. The effect of temperature was also investigated and activation parameters were evaluated. Inhibition adsorption characteristics were approximated by Langmuir adsorption isotherm. Chemical adsorption mechanism was proposed for the studied inhibitor from the trend of inhibition performance and temperature degree in addition to activation energy values and heat of adsorption.

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Synthesis and Characterization of Some New 4-Hydroxy-coumarin Derivatives

Abstract: Some novel coumarins were synthesized starting from 4-hydroxycoumarin and methyl bromoacetate. The structures of the newly obtained compounds were confirmed by elemental analysis, mass, IR and NMR spectra.

Cited by 27 publications

References 23 publications

New Corrosion Inhibitor Derived from Coumarin

New Corrosion Inhibitor Derived from Coumarin

A Systematic Review on Pharmacological Activities of 4-Methylumbelliferon

Inhibitive impacts extract ofCitrus aurantiumleaves of carbon steel in corrosive media

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