نتایج جستجو برای: suzuki reaction

تعداد نتایج: 415790  

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...

1999
Akira Suzuki

The palladium-catalyzed cross-coupling reaction between organoboron compounds and organic halides or triflates provides a powerful and general methodology for the formation of carbon–carbon bonds. Recently, this reaction has been called the Suzuki coupling, Suzuki reaction, or Suzuki–Miyaura coupling, although we never referred to it as such previously. In this review, this name will be used wi...

Silica-grafted n-propyl-diaza-15-crown-5 (SGPDC) with immobilized palladium nanoparticles was found as an efficient heterogeneous catalytic system for the Heck and Suzuki coupling reactions and satisfied results were obtained. Different derivatives of aryl halides and alkenes under the Heck reaction were converted to the corresponding products with good efficiency. The presence of elec...

Journal: :iranian journal of catalysis 0
raheleh pourkaveh laboratory of organic synthesis and natural products, department of chemistry, sharif university of technology, azadi street, po box 111559516 tehran, iran. hirbod karimi young researchers and elite club, shahreza branch, islamic azad university, shahreza, iran.

the cross-coupling reaction between phenylboronic acid and various types of aryl halides (suzuki reaction) was carried out using a catalytic amount of a new palladium catalyst (1-benzyl-3-(1-benzyl-1-methylpyrrolidin-1-ium-2-yl) pyridin-1-ium palladium chloride [dbnt][pdcl4]) in poly (ethylene glycol) (peg-200) in the presence of koh as the base. this new catalyst was synthesized and characteri...

Journal: :journal of nanostructures 2015
h. khojasteh v. mirkhani m. moghadam s. tangestaninejad i. mohammadpoor-baltork

palladium is the best metal catalyst for suzuki cross coupling reaction for synthesize of unsymmetrical biaryl compounds. but its high cost limits its application in wide scale. using of nanoscale particles as active catalytic cites is a good approach for reducing needed noble metal. by loading precious nanoparticles on magnetic nanocores as a support, recycling and reusing of catalyst will be ...

Journal: :organic chemistry research 2015
dariush saberi khodabakhsh niknam farhad panahi mohammad reza hormozi-nezhad

silica-grafted n-propyl-diaza-15-crown-5 (sgpdc) with immobilized palladium nanoparticles was found as an efficient heterogeneous catalytic system for the heck and suzuki coupling reactions and satisfied results were obtained. different derivatives of aryl halides and alkenes under the heck reaction were converted to the corresponding products with good efficiency. the presence of electron-dona...

H. Khojasteh, I. Mohammadpoor-Baltork M. Moghadam S. Tangestaninejad V. Mirkhani

Palladium is the best metal catalyst for Suzuki cross coupling reaction for synthesize of unsymmetrical biaryl compounds. But its high cost limits its application in wide scale. Using of nanoscale particles as active catalytic cites is a good approach for reducing needed noble metal. By loading precious nanoparticles on magnetic nanocores as a support, recycling and reusing of catalyst will be ...

2013
Richard Heck

The Suzuki cross-coupling reaction is about 30 years old and represents a smooth method for creating carbon-carbon bonds. Typically, in the Suzuki reaction aryl halides are combined with an aryl boronic acid or boronic ester in the presence of a Pd(0) catalyst and base to afford a variety of biaryl compounds (Scheme 1). These biphenyl templates are very common in non-steroidal anti-inflammatory...

Journal: :Organic letters 2000
S R Chemler S J Danishefsky

[reaction: see text]Transannular macrocyclizations via intramolecular B-alkyl Suzuki reactions are described. Regioselective terminal olefin hydroboration with 9-BBN followed by Pd(0)-catalyzed Suzuki reaction in the presence of a base such as TlOEt at high dilution generates macrocycles with a high degree of control over olefin geometry with isomerically pure E or Z vinyl iodide substrates. Th...

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