نتایج جستجو برای: claisen schmidt condensation

تعداد نتایج: 40665  

Journal: :Pharmacy Education 2023

Background: Pyrazolopyridines are heterocyclic compounds with nitrogen atoms in the ring, and they have been used as one of important pharmacophores drug design. Pyrazole derivatives synthesised applied pharmaceutical industry active drugs. The recent commercial success pyrazole COX-2 inhibitors has brought even more attention to significance this ring medicinal chemistry. Objective: This study...

Journal: :European Journal of Chemistry 2023

Hydrazine and its derivatives, as harmful substances, seriously risk the health of humans environment. On basis admirable luminescent properties low biological harmfulness biphenyl moiety, a moiety can be combined with naphthalene ring via chalcone scaffold easily traced by nucleophilic group. Therefore, chalcones (BPCs) decorated various systems fluorescent sensors for hydrazine are synthesise...

Journal: :Rafidain journal of science 2022

In our research, new bis-α, β-unsaturated carbonyl compounds (Z2-Z4) were prepared via Claisen- Schmidt reaction, by the condensation of 2,6-dimethyl-3,5-diacetyl-1,4-dihydropyridine (Z1) with different appropriate benzaldehyde, like (benzaldehyde, m-nitro benzaldehyde and o-chloro benzaldehyde) using 10% aqueous sodium hydroxide as a base. A simple efficient method has been applied for synthes...

Journal: :Journal of physics 2022

Abstract A novel chalcone based pyrene (E)-1-(4-(1H-imidazol-1-yl)phenyl)-3-(1,5a1-dihydropyren-1-yl)prop-2-en-1-one ( EIPDP ) has been successfully synthesized by Claisen-Schmidt condensation reaction. The molecular structure was optimized using density functional theory (DFT) at B3LYP/ 6-311++G(d,p) basis set. In addition, electrostatic potential (MEP) obtained to study the intramolecular cha...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

در این تحقیق، پوسته برنج بدست آمده از شمال ایران به عنوان ماده ارزان جهت تولید نانو سیلیکا استفاده شده است. رفتارهای شیمیایی متفاوت و شرایط مختلف برای احتراق کنترل شده جهت تولید سیلیکا با خلوص بالا و در اندازه نانو مورد بررسی قرار گرفته است. خصوصیات ساختاری سیلیکا تهیه شده از خاکستر پوسته برنج از طریق xrd, bet, ftir, tem ارزیابی شده مطالعه شده و ترکیب شیمیایی محصول از chn و xrfطریق است. همچنی...

Journal: :International Journal of Cancer and Biomedical Research (Print) 2021

Thesis AbstractBackground: Heterocyclic are known to have multiple applications in particular biomedical settings. Aim: The present study reports a convenient protocol for the design and synthesis of new heterocyclic compounds incorporating 1- hydroxy-naphthyl angular chromones bearing allylnaphthyl fragments. Materials Methods: versatile precursor 2-acetyl-4- allyl-1-hydroxy naphthalene was su...

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