نتایج جستجو برای: heck cross

تعداد نتایج: 491365  

Journal: :iranian chemical communication 2013
ali naghipour mohsen sayadi mojdeh hashemi mosstafa kazemi

the catalytic acvtivity of dimeric and monomeric ortho-palladated complexes [pd{c6h2(ch2nh2-(ome)2,3,4}(µ-cl)]2)2) and [pd{c6h2(ch2nh2-(ome)2,3,4}cl(pph3)](3), was investigated in heck cross-coupling reaction. these complexes are more active and efficient catalysts for heck cross-coupling reaction. the palladium complexes 2 and 3 is employed in the heck cross-coupling reaction between styrene a...

The catalytic acvtivity of dimeric and monomeric ortho-palladated complexes [Pd{C6H2(CH2NH2-(OMe)2,3,4}(µ-Cl)]2)2) and [Pd{C6H2(CH2NH2-(OMe)2,3,4}Cl(PPh3)](3), was investigated in Heck cross-coupling reaction. These complexes are more active and efficient catalysts for Heck cross-coupling reaction. The palladium complexes 2 and 3 is employed in the Heck cross-coupling reaction between styrene a...

Journal: :The Journal of organic chemistry 2006
Xiaojie Zhang Hongkun Tian Qin Liu Lixiang Wang Yanhou Geng Fosong Wang

Boronic pinacol ester group is not reactive in Kumada, Heck and Stille coupling reaction conditions. Fluorene-based sophisticated organoboron compounds were synthesized by means of Palladium catalyzed Kumada, Heck and Stille cross-coupling reactions from halofluorenyl boronic esters.

Journal: :Molecules 2010
Radha Narayanan

Since metal nanoparticles have a high surface-to-volume ratio and very active surface atoms, they are very attractive catalysts for a wide variety of organic and inorganic reactions, compared to bulk catalysts. Metal nanoparticles suspended in colloidal solutions and those adsorbed onto bulk supports have been used as catalysts for a wide variety of carbon-carbon bond formation reactions such a...

Journal: :Molecules 2010
Sedat Yaşar Emine Ozge Ozcan Nevin Gürbüz Bekir Cetinkaya Ismail Ozdemir

An efficient and stereoselective catalytic system for the Heck cross coupling reaction using novel 1,3-dialkyl-3,4,5,6-tetrahydropyrimidinium salts (1, LHX) and Pd(OAc)2 loading has been reported. The palladium complexes derived from the salts 1a-f prepared in situ exhibit good catalytic activity in the Heck coupling reaction of aryl bromides under mild conditions.

2016
M. H. Sayahi B. Mirza

A novel and efficient palladium-based homogeneous catalyst was fabricated and used as a robust catalyst in Suzuki–Miyaura cross-coupling and Heck reactions. 2-Amino-N(pyridin-2-ylmethyl)benzamide was introduced as a versatile ligand for palladiumcatalyzed cross-coupling reactions. The desired active and stable homogeneous Pd catalyst was prepared via the coordination of Pd with 2-amino-N-(pyrid...

Journal: :nanochemistry research 0
mina amini department of chemistry, catalysis division, university of isfahan, isfahan, iran marzieh hajjari department of chemistry, catalysis division, university of isfahan, isfahan, iran amir landarani-isfahani department of chemistry, catalysis division, university of isfahan, isfahan, iran valiollah mirkhani department of chemistry, catalysis division, university of isfahan, isfahan, iran majid moghadam department of chemistry, catalysis division, university of isfahan, isfahan, iran sharam tangestaninejad department of chemistry, catalysis division, university of isfahan, isfahan, iran iraj mohammadpoor-baltork

this study offers an exclusive class of magnetic nanoparticles supported hyperbranched polyglycerol (mnp/hpg) that was functionalized with citric acid (mnp/hpg-ca) as a host immobilization of palladium nanoparticles. the mnp/hpg-ca/pd catalyst was fully characterized using some different techniques such as thermogravimetric analysis (tga), x-ray diffraction (xrd), transmission electron microsco...

Journal: :Chemical communications 2006
Bhartesh Dhudshia Avinash N Thadani

Acyclic diaminocarbenes are found to be useful ligands for palladium catalyzed Suzuki-Miyaura, Sonogashira and Heck cross-coupling reactions of aryl/alkenyl bromides and chlorides.

Journal: :New Journal of Chemistry 2021

Fe-MIL-101-isatin-Schiff-base-Co was synthesized and applied as a catalyst for Ullmann-type, Buchwald–Hartwig, Hirao, Hiyama Mizoroki–Heck cross-coupling reactions of aryl halides.

Journal: :Biomedical Journal of Scientific and Technical Research 2022

The Mizoroki-Heck as a cross-coupling method is one of the important reactions for Carbon-Carbon bond formation. This reaction permits substitution on planar sp2-hybridized carbon atom.

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