Search Results - "Hozien, Zeinab A."

One-Pot Synthesis of Some New s‑Triazole Derivatives and Their Potential Application for Water Decontamination by Hozien, Zeinab A, EL-Mahdy, Ahmed F. M, Ali, Laila S. A, Markeb, Ahmad Abo, El-Sherief, Hassan A. H

“…A rapid, efficient, and one-pot protocol has been developed for the synthesis of cyclized 2,6-dimethyl-5-substituted-thiazolo­[3,2-b]-s-triazoles (3a–c)…”
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Synthesis of Schiff and Mannich bases of new s -triazole derivatives and their potential applications for removal of heavy metals from aqueous solution and as antimicrobial agents by Hozien, Zeinab A, El-Mahdy, Ahmed F M, Abo Markeb, Ahmad, Ali, Laila S A, El-Sherief, Hassan A H

“…An efficient, simple, and one-pot double Mannich reaction was performed for the synthesis of cyclized 2-methyl-6-substituted-6,7-dihydro-5 -triazolo[5,1-…”
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Photochromism of dihydroindolizines. Part 16: Tuning of the photophysical behavior of photochromic dihydroindolizines in solution and in polymeric thin film by Ahmed, Saleh A., Hozien, Zeinab A., Abdel-Wahab, Aboel-Magd A., Al-Raqa, Shaya Y., Al-Simaree, Abdulrahman A., Moussa, Ziad, Al-Amri, Saleh N., Messali, Mouslim, Soliman, Ahmed S., Dürr, Heinz

“…In this work, photochromic materials based on the dihydroindolizine (DHI) system were synthesized in multistep reactions using chemical and photochemical…”
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One pot synthesis and reactions of novel 5-amino[1,3]thiazolo[3,2-b][1,2,4]triazoles by El-Sherief, Hassan A. H., Hozien, Zeinab A., El-Mahdy, Ahmed F. M., Sarhan, Abdelwareth A. O.

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Synthesis, characterization and reactions of 2-deoxo-5-deazaalloxazines by SARHAN, Abd El-Wareth A. O, HOZIEN, Zeinab A, EL-SHERIEF, Hosney A. H

“…5-Deazaflavins and their homologues have been known as potential riboflavin antagonists, bioreductives, and compounds with potent antitumor activity…”
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Studies on synthesis and reactions of some new five and six-membered heterocycles bearing 5,6,7,8-tetrahydrobenzo[b]thieno[2,3-d]pyrimidin-4(3H)-ones skeleton by EL-Mahdy, Ahmed F. M., Hozien, Zeinab A., Abdelnaser, Shimaa, Mohammed, Ahmed A. K., El-Sawaisi, Suliman M., El-Sherief, Hassan A. H.

“…Thienopyrimidine derivatives are well-known in various pharmaceutical and biomedical domains. In this work, a series of efficacious and novel strategies for…”
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Photochromism of dihydroindolizines. Part XVIII: palladium-catalyzed Negishi coupling for the synthesis of photochromic dihydro 5-azaindolizine-linker-conjugates with a terminal ethylene anchoring group by Ahmed, Saleh A., Khairou, Khalid S., Abdel-Wahab, Aboel-Magd A., Hozien, Zeinab A., Dürr, Heinz

“…Eight new photochromic dihydro 5-azaindolizine-linker-conjugates with a terminal ethylene anchoring group have been synthesized via palladium-catalyzed Negishi…”
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Synthesis of Schiff and Mannich bases of new -triazole derivatives and their potential applications for removal of heavy metals from aqueous solution and as antimicrobial agents by Hozien, Zeinab A, EL-Mahdy, Ahmed F. M, Abo Markeb, Ahmad, Ali, Laila S. A, El-Sherief, Hassan A. H

“…An efficient, simple, and one-pot double Mannich reaction was performed for the synthesis of cyclized 2-methyl-6-substituted-6,7-dihydro-5 H-s -triazolo[5,1- b…”
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Synthesis of some new heterocyclic systems derived from 2-acetylbenzimidazole by Hozien, Z A

“…The named compound was reacted with thiosemicarbazide and/or semicarbazide to produce the corresponding condensation products II and V respectively. Reaction…”
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Intramolecular cyclization of Mannich reaction for synthesis of pyrimido[2,1-b]-1,3,5-tiadiazines by El-Sherief, Hassan A. H., Hozien, Zeinab A., El-Mahdy, Ahmed F. M., Sarhan, Abdelwarth A. O.

“…Reaction of 6‐aryl‐5‐cyano‐2‐mercapto‐3,4‐dihydropyrimidin‐4‐ones with formaldehyde and primary amines in suitable solvent via a double Mannich reaction gave…”
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Studies on the reaction of N-(3-carbethoxy-4,5,6,7-tetrahydrobenzo[b]thien-2-yl)-N′-phenylthiourea with hydrazine hydrate (Part 1) by El-Sherief, Hassan A. H., El-Naggar, Galal M., Hozien, Zeinab A., El-Sawaisi, Suliman M.

“…The reaction of N‐(3‐carbethoxy‐4,5,6,7‐tetrahydrobenzo[b]thien‐2‐yl)‐N′‐phenylthiourea (1) with hydrazine hydrate in 1‐butanol afforded a mixture of compounds…”
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An efficient route for synthesis of 5,6-diphenylimidazo-[2,1-b]thiazoles as antibacterial agents by Hozien, Zeinab A., Abd El-Wareth, A. O. Sarhan, El-Sherief, Hassan A. H., Mahmoud, Abdalla M.

“…The reaction of 4,5‐diphenylimidazol‐2‐thione (1) with aromatic ketones 2a‐i using the acidified acetic acid method afforded the…”
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Synthesis of some biologically active agents derived from thieno[2,3-d]pyrimidine derivatives by Hozien, Z A, Abdel-Wahab, A A, Hassan, K M, Atta, F M, Ahmed, S A

“…The key compound 1-amino-8-iminocyclopenta[b]thieno[2,3-d]pyrimidine (5g) was prepared by reaction of 2-amino-3-cyano cyclopenta[b]thiophene (1) with triethyl…”
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Synthesis and some reactions of 2-cyano-1,6-dioxo-3-methylpyrido[1,2-a][3,1]benzoxazine by HOZIEN, Z. A

“…The importance of pyrido compounds as analgesic, antiinflammatory and central nervous system depressing agents together with the diverse biological activities…”
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Synthesis of some new spirothiazolidinones incorporated with quinazoline moiety by HOZIEN, Z. A, AHMED, A. E.-H. N, EL-ZOHRY, M. F

“…In continuation of our previous work, together with the importance of the combination of spirothiazolidinones with quinazoline moieties, this work reports the…”
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Nonconventional Friedel-crafts chemistry. VIII: On the preferentional intramolecular cyclization reactions of 2-aryl-2-benzyl-1,3-oxathiolan-5-one under Lewis acids catalytic action by EL-ZOHRY, M. F, HOZIEN, Z. A, MOHAMED, O. S

“…In our previous work we reported the intermolecular reactions of spirothialactones with arenes, ferrocene and thiophene. The results of these investigation…”
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Synthesis of some new 8-quinolinyloxy-5-sulfonamide derivatives by ABDEL HAFEZ, A. A, GEIES, A. A, HOZIEN, Z. A, KHALIL, Z. H

“…5-Sulfonyl-8-quinolinol was used for the synthesis of various derivatives. This attempt was directed by knowledge that 8-quinolinol was utilized in the…”
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Spiroheterocyclic systems. V: Synthesis of 3-substituted-10-spiro(1'-cycloalkane)-thiazolo[4,3-a]quinazolin-4-ones by HOZIEN, Z. A, ABDEL-HAFEZ, A. A, AWAD, I. M. A, EL-ZOHRY, M. F

“…Synthesis of a series of 3-substituted-10-spiro(1'-cycloalkane)-thiazolo[4,3- a ]quinazolin-4-ones is described…”
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