نتایج جستجو برای: arylboronic acid

تعداد نتایج: 747762  

2017
Michael Callingham Benjamin M Partridge William Lewis Hon Wai Lam

A chiral rhodium complex catalyzes the highly enantioselective coupling of arylboronic acids, 1,3-enynes, and imines to give homoallylic sulfamates. The key step is the generation of allylrhodium(I) species by alkenyl-to-allyl 1,4-rhodium(I) migration.

Journal: :Chemical communications 2009
Takahiro Nishimura Hana Kumamoto Makoto Nagaosa Tamio Hayashi

New C2-symmetric tetrafluorobenzobarrelene ligands were prepared and applied successfully to the rhodium-catalyzed asymmetric addition of arylboronic acids to aromatic aldehydes giving chiral diarylmethanols in high yield with high enantioselectivity.

2011
Deyun Qian Junliang Zhang

A straightforward, efficient, and reliable redox catalyst system for the Au(I)/Au(III)-catalyzed Sonogashira cross-coupling reaction of functionalized terminal alkynes with arylboronic acids under mild conditions has been developed.

Journal: :Chemical communications 2010
Chun-Hui Xing Yuan-Xi Liao Ping He Qiao-Sheng Hu

Transition metal-catalyzed addition of arylboronic acids to 2-formylbenzoates afforded 3-substituted phthalides. By using SPINOL-based phosphites as ligands, a Rh(I)-catalyzed asymmetric version of such an addition reaction was achieved.

Journal: :Chemical Communications 2021

Enantioselective nickel-catalyzed reactions of (hetero)arylboronic acids or alkenylboronic with substrates containing an alkyne tethered to various acyclic electron-deficient alkenes are described.

Journal: :Organic & biomolecular chemistry 2015
Takanori Matsuda Shoichi Watanuki

The rhodium(I)-catalysed arylative annulation of 1,4-enynes with arylboronic acids was investigated. The reaction was found to proceed via an addition-1,4-rhodium migration-addition sequence, affording the corresponding 1,1-disubstituted 3-(arylmethylene)indanes.

Journal: :Organic & biomolecular chemistry 2011
Yingying Yang Shan Tang Chao Liu Huimin Zhang Zhexun Sun Aiwen Lei

An applicable and easy-handling Ni-catalyst can be used to promote direct arylation of α-bromonitriles with various arylboronic acids to construct α-arylnitriles under mild conditions. The methodology tolerates β-hydrogens and functional groups in the substrates.

Journal: :Chemical communications 2010
Shengqing Ye Xiaodi Yang Jie Wu

A novel and efficient route for the synthesis of 1-methyleneindenes via palladium-catalyzed tandem reactions of 1-(2,2-dibromovinyl)-2-alkynylbenzene with arylboronic acids is described. This reaction proceeded under mild conditions with high efficiency and excellent selectivity.

Journal: :Chemical communications 2014
Shiqing Li Fan Yang Taiyong Lv Jingbo Lan Ge Gao Jingsong You

Imidazolium salts were conveniently prepared by direct aryl quaternization using arylboronic acids. This process features the tolerance of a broad range of functional groups and excellent chemoselectivity, and is especially effective for the synthesis of unsymmetrical imidazolium salts.

Journal: :Chemical communications 2014
Kazuhiro Hata Zhiheng He Constantin Gabriel Daniliuc Kenichiro Itami Armido Studer

A highly diastereoselective synthesis of 2-aryl-3-acyloxy-2,3-dihydrobenzofurans by palladium-catalyzed acyloxyarylation involving dearomatization of benzofurans with arylboronic acids and carboxylic acids occurring under mild conditions has been developed.

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