Search Results - "Qarah, Ahmad"

Microwave irradiations toprepare novel 1,4-dihydropyridine, pyrimidoquinoline, triazoloquinazolinone,and imidazoquinazolinonedimer analogsand their antimicrobial performances by Alatawi, Fuad A., Alatawi, Kahdr, Mattar, Hadeer, Alqarni, Sara A., Alalawy, Adel I., Fawzi Qarah, Ahmad, Alamoudi, Wael M., El-Metwaly, Nashwa M.

“…[Display omitted] •New1,4-dihydropyridinederivatives were designed, synthesized, and fully characterized.•Microwaves irradition assist synthesis of…”
Get full text

New thieno[2,3-b]pyridine-based compounds: Synthesis, molecular modelling, antibacterial and antifungal activities by Alenazi, Noof A., Alharbi, Haifa, Fawzi Qarah, Ahmad, Alsoliemy, Amerah, Abualnaja, Matokah M., Karkashan, Alaa, Abbas, Basma, El-Metwaly, Nashwa M.

“…New thieno[2,3-b]pyridine clubbed various thiazole ring systems were synthesized by the reaction of…”
Get full text

Electrophilic Carboxamidation of Ferrocenes with Isocyanates by Qarah, Ahmad F, Schaeff, Mark N, Klumpp, Douglas A

“…Ferrocenes undergo one-step carboxamidation by reaction with isocyanates in CF3SO3H solution. The chemistry is most efficient in excess superacid, and it has…”
Get full text

Synthesis, molecular modelling and docking studies of new thieno[2,3-b:4,5-b′] dipyridine compounds as antimicrobial agents by Alenazi, Noof A., Fawzi Qarah, Ahmad, Alsahag, Mansoor, Alharbi, Haifa, Bayazeed, Abrar, Al-Qahtani, Salhah D., El-Metwaly, Nashwa M.

“…A series of substituted thieno[2,3-b:4,5-b′]dipyridine compounds were synthesized based on the reactions of 2-acetyl-3-aminothieno[2,3-b]pyridine derivative 1…”
Get full text

Synthesis of tetrazole hybridized with thiazole, thiophene or thiadiazole derivatives, molecular modelling and antimicrobial activity by Abualnaja, Matokah M., Alalawy, Adel I., Alatawi, Omar M., Alessa, Ali H., Fawzi Qarah, Ahmad, Alqahtani, Alaa M., Bamaga, Majid A., El-Metwaly, Nashwa M.

“…Tetrazole-based derivatives and their electronic structures have displayed interesting antimicrobial activity. The tetrazole-based hybrids linked with…”
Get full text

Synthesis of new thiazolyl-thienyl and thiazolyl-thiadiazolyl ketones: Molecular modelling and docking studies as antimicrobial agents by Alharbi, Haifa, Alsalmi, Omar, Alalawy, Adel I., Fawzi Qarah, Ahmad, Alsimaree, Abdulrahman A., Alqahtani, Alaa M., Alsoliemy, Amerah, El-Metwaly, Nashwa M.

“…Eight thiazolyl-thienyl and thiazolyl-thiadiazolyl ketones 5a-d and 6a-d were synthesized based on the reaction of…”
Get full text

Superacid-promoted synthesis of polychlorinated dibenzofurans by Qarah, Ahmad, Gasonoo, Makafui, Do, Dat, Klumpp, Douglas A.

“…[Display omitted] •A one step procedure has been developed for the synthesis of polychlorinated dibenzofurans.•The chemistry involves a superacid-promoted…”
Get full text

Preparation of polyacrylonitrile-based solution blow spinning fluorescent nanofibers from perylene-doped silica nanoparticles by Almahri, Albandary, Alkhamis, Kholood, Ahmad Fawzi Qarah, Alatawi, Nada M, Bayazeed, Abrar, Alnoman, Rua B, El-Metwaly, Nashwa M

“…Fluorescent agents have been used to improve the anticounterfeiting of marketable products. It has been vital to enhance the engineering processing of…”
Get full text

Synthesis and Charge Transfer Complex Study of Silicon-containing Chalcogenoethers by Zhang, Shaozhong, Qarah, Ahmad F., Gari, Deeraj R., Jin, Jin

“…The syntheses of several silicon-containing chalcogenoethers were described. These chalcogenoethers with mixed S/O or Se/O atoms can act as novel multi-dentate…”
Get full text

Synthesis, modeling, and biological studies of new thiazole-pyrazole analogues as anticancer agents by Ashour, Gadeer R.S., Qarah, Ahmad Fawzi, Alrefaei, Abdulmajeed F., Alalawy, Adel I., Alsoliemy, Amerah, Alqahtani, Alaa M., Alamoudi, Wael M., El-Metwaly, Nashwa M.

“…A series of various substituted thiazole-pyrazole hybrids 5, 7, 8, and 9 were synthesized, and their chemical structures were confirmed by spectral data…”
Get full text

Synthesis of designed new 1,3,4-oxadiazole functionalized pyrano [2,3-f] chromene derivatives and their antimicrobial activities by Alatawi, Kahdr, Qarah, Ahmad Fawzi, Alharbi, Haifa, Alisaac, Ali, Abualnaja, Matokah M., Attar, Roba M.S., Alsoliemy, Amerah, El-Metwaly, Nashwa M.

“…Diethyl 2-(((4-methyl-2-oxo-2H-chromen-7-yl)oxy)methylene)malonate (2) was synthesized from coumarin 1 and diethyl ethoxymethylene malonate in ethanol,…”
Get full text

Synthesis of phenylthiourea-based pyrazole, thiazole and/or pyran compounds: molecular modeling and biological activity by Qarah, Ahmad Fawzi, Alatawi, Kahdr, Alalawy, Adel I., Alnoman, Rua B., Alqahtani, Alaa M., Abualnaja, Matokah M., Alamoudi, Wael M., El-Metwaly, Nashwa M.

“…The significant biological activity of phenylthiourea derivatives prompted the synthesis of a new phenylthiourea-based heterocyclic ring systems (pyrazole,…”
Get full text

Design, synthesis, and molecular docking of new phenothiazine incorporated N-Mannich bases as promising antimicrobial agents by Abdula, Ahmed M., Qarah, Ahmad Fawzi, Alatawi, Kahdr, Qurban, Jihan, Abualnaja, Matokah M., Katuah, Hanadi A., El-Metwaly, Nashwa M.

“…The present work aims to synthesize four series of phenothiazine incorporation Mannich bases. Therefore, 10-methyl-10H-phenothiazine-3-sulfonamide (4) which…”
Get full text

Cyclizations of N-carbamoyl and N-thiocarbamoyl iminium ions leading to ring-fused heterocycles by Qarah, Ahmad, Klumpp, Douglas A.

“…[Display omitted] •N-Carbamoyl iminium ions are generated from γ-ureidoacetals in superacid.•N-Carbamoyl iminium ions undergo cyclizations with aryl…”
Get full text

Synthesis and Study of New Antioxidants Containing Sulfur, Selenium, and Silicon by Qarah, Ahmad Fawzi

“…Antioxidants are defined as substances that can prevent the oxidative cellular damages from the free radical by keeping a proper level of the reactive oxygen…”
Get full text

Efficiency enhancement breaking 10 % barrier in black dye sensitized solar cells through co-sensitization by Alharbi, Haifa, Alessa, Ali H., Qarah, Ahmad Fawzi, Bayazeed, Abrar, Alqarni, Sara A., Alharbi, Arwa, Katuah, Hanadi A., El-Metwaly, Nashwa M.

“…•Novel organic dye MDJ-1–2 as co-sensitizer with Ru-based black dyes in DSSCs enhances performance.•MDJ-1–2 exploits the ability of carboxyl groups to bind…”
Get full text

Corrigendum “Efficiency enhancement breaking 10 % barrier in black dye sensitized solar cells through co-sensitization “[J. Photochem. Photobiol., A: Chem. 456 (2024) 115809] by Alharbi, Haifa, Alessa, Ali H., Fawzi Qarah, Ahmad, Bayazeed, Abrar, Alqarni, Sara A., Alharbi, Arwa, Katuah, Hanadi A., El-Metwaly, Nashwa M.

Get full text

Superacid-promoted synthesis of indolizidine derivatives by Kennedy, Sean, Kethe, Anila, Qarah, Ahmad, Klumpp, Douglas A.

“…[Display omitted] •Cascade reaction leading to the indolizidine ring system.•Superacid-promoted condensation and electrocyclization.•Synthesis of the alkaloid…”
Get full text

Synthesis of new methylthiourea-thiophene, -thiazole, and -pyrazole conjugates: Molecular modelling and docking studies as antimicrobial agents by Alharbi, Arwa, Alqahtani, Alaa M., Mojally, Mariam, Qarah, Ahmad Fawzi, Alessa, Ali H., Alatawi, Omar M., Attar, Roba M.S., El-Metwaly, Nashwa M.

“…•New methylthiourea-thiophene, -thiazole, or -pyrazole conjugates were synthesized and characterized.•DFT calculations disclosed that synthesized derivatives…”
Get full text

Synthesis, molecular modeling, and anticancer activity of new thiophene and thiophene-pyrazole analogues incorporating benzene-sulfonamide moiety as carbonic anhydrase isozymes (CA-IX and CA-XII) by Alalawy, Adel I., Alatawi, Kahdr, Alenazi, Noof A., Qarah, Ahmad Fawzi, Alatawi, Omar M., Alnoman, Rua B., Alharbi, Arwa, El-Metwaly, Nashwa M.

“…•Two series of thiophene and thiophene-pyrazole analogues linked with benzene-sulfonamide moiety were synthesized.•The FMO's shape and energy were computed…”
Get full text