نتایج جستجو برای: 34 dihydropyrimidin 2 1h thione

تعداد نتایج: 2609081  

Journal: :Molecules 2014
Muhammad Hanif Muhammad Azhar Hayat Nawaz Maria V Babak Jamshed Iqbal Alexander Roller Bernhard K Keppler Christian G Hartinger

RuII(arene) complexes have emerged as a versatile class of compounds to design metallodrugs as potential treatment for a wide range of diseases including cancer and malaria. They feature modes of action that involve classic DNA binding like platinum anticancer drugs, may covalent binding to proteins, or multimodal biological activity. Herein, we report the synthesis and urease inhibition activi...

Journal: :iranian journal of catalysis 2013
jalal albadi azam mansournezhad

cuo-ceo2 nanocomposite is reported as a green and highly efficient recyclable catalyst for the multicomponent  synthesis of 3,4-dihydropyrimidin-2(1h)-ones/thiones under solvent-free conditions. the catalyst was synthesized by co-precipitation method and characterized by xrd, bet specific surface area, fesem and eds analysis.

Journal: :iranian journal of catalysis 2015
soheil sayyahi mehdi behvandi behvandi

in this study, an efficient and green process for the synthesis of dihydropyrimidin-2(1h)-ones from aromatic benzaldehydes, ethyl acetoacetate and urea using al-mcm-41 as heterogeneous catalyst and microreactor under solvent-free conditions has been developed. the advantages of this method are easy work-up procedure, regeneration of the catalyst, clean and neutral reaction conditions.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی 1392

واکنش سه جزئی و تک ظرفی بین پارا- تولوئن سولفونیل هیدرازید، آروئیل کلریدها و آمونیوم تیوسیانات منجر به تشکیل مشتقات جدید 5-aroyl-1-tosyl-1h-1,2,4-triazole-3(3h)-thione با راندمان بالا مطابق با نتایج زیر شد.

Azam Mansournezhad Jalal Albadi,

CuO-CeO2 nanocomposite is reported as a green and highly efficient recyclable catalyst for the multicomponent  synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones under solvent-free conditions. The catalyst was synthesized by co-precipitation method and characterized by XRD, BET specific surface area, FESEM and EDS analysis.

D-tartaric acid is successfully used as a green and efficient catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones under solvent-free conditions. The developed method has many advantages, including devoid of harmful catalyst and solvents, high yield and easily work-up.

Oxalic acid dihydrate as a green, mild and efficient catalyst for the one-pot three-component Biginelli synthesis of 3,4-dihydropyrimidin-2-(1H)-one derivatives from the reaction between β-keto esters (methyl or ethyl acetoacetate), aromatic aldehyde (benzaldehye derivatives) and urea or thiourea under thermal and solvent-free conditions with excellent yields and short reaction time is st...

Journal: :Bioorganic chemistry 2013
V Mallikarjuna Rao P Mahesh Kumar D Rambabu Ravikumar Kapavarapu S Shobha Rani Parimal Misra Manojit Pal

A series of novel alkynyl substituted 3,4-dihydropyrimidin-2(1H)-one (DHPM) derivatives were designed, synthesized and evaluated in vitro as potential inhibitors of chorismate mutase (CM). All these compounds were prepared via a multi-component reaction (MCR) involving sequential I2-mediated Biginelli reaction followed by Cu-free Sonogashira coupling. Some of them showed promising inhibitory ac...

Journal: :Catalysts 2023

Sulfonated-silica-coated cobalt ferrite (CoFe2O4) magnetic nanoparticles (MNPs-SiCoFe-SO3H) are efficient heterogeneous catalysts for the synthesis of 3,4-dihydropyrimidin-2(1H)-one and octahydroquinazoline derivatives in absence solvent. The effects solvent, temperature, catalyst amount on reaction investigated. easy separation, reusability catalyst, simplicity procedure, mild conditions, good...

2010
Aamer Saeed Rasheed Ahmad Khera Masood Parvez

The asymmetric unit of the title compound, C(14)H(18)N(2)S, contains two independent and conformationally similar mol-ecules, which form cyclic dimers via inter-molecular hydrogen bonds of the type N-H⋯S [graph set R(2) (2)(8)]. The structure is iso-morphous with that of one of the polymorphs of 4,4,6-tri-methyl-1-phenyl-3,4-dihydro-pyrimidine-2(1H)-thione [Yam-in et al. (2005 ▶). Acta Cryst. E...

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