نتایج جستجو برای: suzuki reaction

تعداد نتایج: 415790  

Journal: :Organic & biomolecular chemistry 2012
Pietro Cotugno Antonio Monopoli Francesco Ciminale Nicola Cioffi Angelo Nacci

Pd nanoparticles generated in green reaction media (viz. ionic liquids and water) catalyze the one-pot sequential Heck and Suzuki coupling reactions of bromo-chloroarenes to afford unsymmetrically substituted arenes in good yields.

Journal: :Chemical communications 2010
Hiroto Yoshida Kengo Okada Shota Kawashima Kenji Tanino Joji Ohshita

Arynes are found to be facilely inserted into bis(pinacolato)diboron by using a platinum-isocyanide catalyst, affording diverse 1,2-diborylarenes, which can be converted into o-terphenyls via Suzuki-Miyaura coupling reaction.

Journal: :Organic letters 2008
Wenqiang Qiao Jia Zheng Yufeng Wang Yijun Zheng Naiheng Song Xinhua Wan Zhi Yuan Wang

An efficient synthesis of novel near-infrared electrochromic 6-substituted (NO2, Br) anthraquinone imides, i.e., 2a and 2b, was established. Bearing functional groups suitable for further structural modifications by nucleophilic substitution reaction and various metal-catalyzed coupling reactions (e.g., Suzuki coupling), 2a and 2b were easily transferred to 1a by reaction with 4-methoxyphenol a...

2011
Sanjay R Borhade Suresh Babsaheb Waghmode

Palladium supported on nickel ferrite (Pd/NiF(2)O(4)) was found to be a highly active catalyst for the Suzuki coupling reaction between various aryl halides and arylboronic acids. The reaction gave excellent yields (70-98%) under ligand free conditions in a 1:1 DMF/H(2)O solvent mixture, in short reaction times (10-60 min). The catalyst could be recovered easily by applying an external magnetic...

Journal: :Molecules 2015
Irene Maluenda Oscar Navarro

The Suzuki-Miyaura reaction (SMR), involving the coupling of an organoboron reagent and an organic halide or pseudo-halide in the presence of a palladium or nickel catalyst and a base, has arguably become one of most utilized tools for the construction of a C-C bond. This review intends to be general account of all types of catalytic systems, new coupling partners and applications, including th...

Journal: :Acta biochimica Polonica 2007
Joanna Ruszkowska Robert Chrobak Paweł Zero Jan K Maurin Joanna Szawkało Zbigniew Czarnocki

Vindoline and its analogues are important constituents of the Madagascan periwinkle Catharanthus roseus, and some of them are valuable chemotherapy drugs used in treatment for some types of cancer, including leukaemia, lymphoma, breast and lung cancer. The search for semi-synthetic congeners of natural substances is still an important task for organic chemistry. In this communication we report ...

2011
Bruno Piqani Wei Zhang

Dihydropyrimidinones and dihydropyrimidinethiones generated from the Biginelli reactions of perfluorooctanesulfonyl-attached benzaldehydes are used as common intermediates for post-condensation modifications such as cycloaddition, Liebeskind-Srogl reaction and Suzuki coupling to form biaryl-substituted dihydropyrimidinone, dihydropyrimidine, and thiazolopyrimidine compounds. The high efficiency...

Journal: :The Journal of organic chemistry 2006
Qian Dai Wenzhong Gao Duan Liu Lea M Kapes Xumu Zhang

A variety of triazole-based monophosphines (ClickPhos) have been prepared via efficient 1,3-dipolar cycloaddition of readily available azides and acetylenes. Their palladium complexes provided excellent yields in the amination reactions and Suzuki-Miyaura coupling reactions of unactivated aryl chlorides. Ligand 7i, which has a 2,6-dimethoxybenzene moiety, provided good results in Suzuki-Miyaura...

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