نتایج جستجو برای: aril iodides

تعداد نتایج: 7829  

Journal: :Organic letters 2002
Fuk Yee Kwong Artis Klapars Stephen L Buchwald

[reaction: see text] A mild method for the copper-catalyzed amination of aryl iodides is reported. This operationally simple C-N bond-forming protocol uses CuI as the catalyst and ethylene glycol as ligand in 2-propanol. A variety of functionalized aryl iodides as well as several amines were efficiently coupled using this method. This catalytic amination procedure is relatively insensitive to m...

2012
Tsutomu Konno Misato Kishi Takashi Ishihara

Treatment of readily prepared (Z)-6-benzyloxy-1,1,1,2-tetrafluoro-6-methyl-2-hepten-4-yne with 1.5 equiv of LHMDS in -78 °C for 1 h gave the corresponding trifluoromethylated diyne in an excellent yield. This diyne was found to be a good substrate for the carbocupration with various higher-ordered cyanocuprates to give the corresponding vinylcuprates in a highly regio- and stereoselective manne...

2017
Yu-Chi Chen Chien-Chi Wu Wei-Ting Liao Ling-Jun Liu

Abstract: A reusable PdCl2(NH3)2/cationic 2,2′-bipyridyl system was used to catalyze the double Mizoroki-Heck reaction of aryl iodides with electron-deficient alkenes in water in the absence of inert gas, giving β,β-diarylated carbonyl derivatives in good to excellent yields. The formation of unsymmetrical β,β-diarylated alkenes were also studied by coupling aryl iodides with the corresponding ...

2017
James R Vyvyan Courtney A Engles Scott L Bray Erik D Wold Christopher L Porter Mikhail O Konev

Several Hiyama cross-coupling reactions of oxasilacycloalkenes and aryl iodides are described that produce trisubstituted Z-styrenes in moderate to excellent yields. Both electron-rich and electron-poor aryl iodides are tolerated in the cross-coupling reaction. The oxasilacycloalkene coupling partners were prepared by ruthenium-catalyzed intramolecular anti-hydrosilylation of alkynols. One of t...

Journal: :Chemical communications 2008
Adelina Voutchkova Abigail Coplin Nicholas E Leadbeater Robert H Crabtree

Microwave heating greatly accelerates Pd-catalyzed decarboxylative coupling of aromatic acids and aryl iodides, and allows the coupling of benzoic acids with unactivated arenes.

Journal: :Organic & biomolecular chemistry 2009
Hannah F Sore Christine M Boehner Simon J F MacDonald David Norton David J Fox David R Spring

Vinyldisiloxanes equilibrate with the corresponding silanolates under basic conditions and subsequently undergo palladium catalysed cross coupling with aryl/heteroaryl iodides and bromides.

Journal: :Proceedings of the National Academy of Sciences 1915

Journal: :Organic chemistry frontiers 2022

Radical chain cyclization of aryl iodides provides an efficient synthesis planar Blatter radicals, and, for the first time, access to functionalized sulphur-containing analogues.

2010
Vanessa Gressler Sidnei Moura Alex F. C. Flores Darlene C. Flores Pio Colepicolo Ernani Pinto

Cinco derivados de 4-trifluorometil-2-(5-aril-3-stiril-1H-pirazol-1il)-pirimidinas e seis 5-aril3-estiril-1-carboxamidino-1H-pirazois previamente sintetizados foram avaliados de acordo com suas propriedades antioxidantes e antimicrobianas. Estas atividades foram avaliadas por ensaios de DPPH e HRP/luminol/H 2 O 2 quimioluminescência e suas atividades antimicrobianas (CIM). Os resultados foram b...

Journal: :Organic letters 2002
Robert F Cunico Bikash C Maity

[reaction: see text] A carbamoylsilane is shown to carry out the direct carbamoylation of aryl chlorides, bromides, and iodides under catalysis by phosphinepalladium(0) complexes.

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