نتایج جستجو برای: hydrocarbon

تعداد نتایج: 20726  

Journal: :Dalton transactions 2008
Min-Liang Yao Scott Borella Travis Quick George Walter Kabalka

The reaction of aryl aldehydes with allylsilanes in the presence of boron trihalides produces haloallylated products. Mechanistic details are presented.

Journal: :Molecules 2011
Stéphane Sengmany Erwan Le Gall Eric Léonel

A range of novel 4-amino-6-arylpyrimidines has been prepared under mild conditions by an electrochemical reductive cross-coupling between 4-amino-6-chloro-pyrimidines and functionalized aryl halides. The process, which employs a sacrificial iron anode in conjunction with a nickel(II) catalyst, allows the formation of coupling products in moderate to high yields.

Journal: :The Journal of organic chemistry 2017
Taylor Vacala Lauren P Bejcek Chloé G Williams Alexandra C Williamson Paul A Vadola

A mild method for the synthesis of 2-quinolinones via hydroarylation of N-aryl alkynamides is reported. While traditional methods have relied on the use of strong Brønsted or Lewis acids, this report describes the development of mild reaction conditions that yield 2-quinolinones in good to excellent yield using a commercially available gold catalyst. Substrates bearing a variety of functional g...

Journal: :Chemical communications 2009
Daishi Fujino Sayuri Hayashi Hideki Yorimitsu Koichiro Oshima

Treatment of N-allylacetamide with aryl halide in the presence of sodium t-butoxide and a palladium catalyst leads to arylative cyclisation to provide the corresponding benzyl-substituted oxazoline in high yield.

2015
Kelsey F. VanGelder Melinda Wang Marisa C. Kozlowski

A versatile and general catalytic strategy has been developed for the α-arylation of phosphonoacetates utilizing parallel microscale experimentation. These α-substituted phosphonoacetates are widely useful, notably as substrates in the Horner-Wadsworth-Emmons-type olefinations. However, the current routes to these products involve harsh conditions, limiting the variety of functionality. The rep...

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2012
Maurizio D'Auria Vincenzo Frenna Salvatore Marullo Rocco Racioppi Domenico Spinelli Licia Viggiani

The photochemical version of the Boulton-Katritzky reaction has been studied, examining the behaviour of the arylhydrazones of 3-benzoyl-5-X-1,2,4-oxadiazoles. The effect of several modifications of the substrates structure (the E and/or Z structures of arylhydrazones, the possible presence of substituents in the arylhydrazono moiety, and the nature of substituents at C-5 of the 1,2,4-oxadiazol...

2017
Nan-Nan Jia Xin-Chuan Tian Xiao-Xia Qu Xing-Xiu Chen Ya-Nan Cao Yun-Xin Yao Feng Gao Xian-Li Zhou

An efficient copper-catalyzed direct 2-arylation of benzoxazoles and benzoimidazoles with aryl bromides is presented. The CuI/PPh3-based catalyst promotes the installation of various aryl and heteroaryl groups through a C-H activation process in good to excellent yields. The cytotoxicity of obtained 2-aryl benzoxazoles (benzoimidazoles) was also evaluated and 1-methyl-2-(naphthalen-1-yl)benzoim...

2015
Abdou O. Abdelhamid Sobhi M. Gomha Ahmad S. Shawali

Starting from N-aryl 2-aroylhydrazono-propanehydrazonoyl chlorides, a series of new functionalized 1,3,4-thiadiazoles were prepared. The structures of the compounds prepared were confirmed by both elemental and spectral analyses as well as by alternate synthesis. The mechanisms of the studied reactions are outlined. The antimicrobial activities of the compounds prepared were screened and the re...

2009
Bibhesh K. Singh

The present review discuss about the structure, reactivity of various amidines. The complexation behavior of amidine especially aryl benzamidine with different metal ions has been discussed. This review article is useful for inorganic and bioinorganic chemist.

Journal: :Chemical communications 2014
Dengke Li Ning Xu Yicheng Zhang Lei Wang

An efficient Pd-catalyzed decarboxylative ortho-arylation of amides with aryl acylperoxides was developed. A variety of anilides reacted with aryl acylperoxides to afford the corresponding ortho-arylation products, and N-methoxyarylamides generated phenanthridinones.

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