Results 271 to 280 of about 127,650 (334)

Asymmetric Copper-Catalyzed Intermolecular Aminoarylation of Styrenes: Efficient Access to Optical 2,2-Diarylethylamines

Journal of the American Chemical Society, 2017
We have developed a copper-catalyzed enantioselective intermolecular aminoarylation of alkenes using a novel N-fluoro-N-alkylsulfonamide as the amine reagent, which could react with the Cu(I) catalyst to release a related amino radical. After addition to
Dinghai Wang, Lianqian Wu, Pinhong Chen
exaly   +2 more sources

Catalytic Asymmetric Diamination of Styrenes

Journal of the American Chemical Society, 2017
An enantioselective catalytic vicinal diamination of styrenes is reported, which proceeds under entirely intermolecular reaction control. It relies on a chirally modified aryliodine(I) catalyst and proceeds within an iodine(I/III) manifold with ...
Kilian Muñiz, R Martin Romero, Claudio Martinez   +2 more
exaly   +2 more sources

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Copper-Catalyzed Radical Cross-Coupling of Redox-Active Oxime Esters, Styrenes, and Boronic Acids.

Angewandte Chemie, 2018
A visible-light-driven, copper-catalyzed three-component radical cross-coupling of oxime esters, styrenes, and boronic acids has been developed. Key steps of this protocol involve catalytic generation of an iminyl radical from a redox-active oxime ester ...
Xiao‐Ye Yu, Quan-Qing Zhao, Jun Chen, Jia‐Rong Chen, W. Xiao   +4 more
semanticscholar   +1 more source

Catalytic, Directed C–C Bond Functionalization of Styrenes

Journal of the American Chemical Society, 2020
A method for catalytic conversion of C(aryl)-C(alkenyl) bonds in styrene derivatives to new C-C bonds is developed. In the presence of a rhodium catalyst, the alkenyl groups of styrenes bearing a pyrazolyl directing group were efficiently converted to ...
Takuya Kochi, Fumitoshi Kakiuchi
exaly   +2 more sources

Mutagenic effects of styrene and styrene oxide

Mutation Research/Genetic Toxicology, 1979
Abstract Styrene and its presumed metabolite styrene oxide were tested in the Salmonella/liver-microsome test on the tester strains TA1535, TA1537, TA1538, TA98 and TA100 of Salmonella typhimurium . Styrene oxide, in the concentration range 1–10 μmoles per plate, was mutagenic on TA1535 and TA100, both in the absence and the presence of a rat-liver ...
openaire   +2 more sources

Cobalt-Catalyzed Migrational Isomerization of Styrenes.

Organic Letters, 2020
An efficient cobalt-catalyzed migrational isomerization of styrenes was developed using the thiazoline iminopyridine (TIP) ligand. This reaction is operationally simple and atom-economical using readily available starting materials to access ...
Jiajin Zhao, Biao Cheng, Chenhui Chen, Zhan Lu   +3 more
semanticscholar   +1 more source

Ligand-Enabled Ni-Catalyzed Enantioselective Hydroarylation of Styrenes and 1,3-Dienes with Arylboronic Acids

CCS Chemistry, 2019
We report an enantioselective hydroarylation reaction of styrenes and 1,3-dienes with arylboronic acids catalyzed by nickel complexes bearing chiral spiro aminophosphine ligands.
X. Lv, Chao Fan, Li-Jun Xiao, Jian-Hua Xie, Qi‐Lin Zhou   +4 more
semanticscholar   +1 more source

Copper-Catalyzed Intermolecular Difunctionalization of Styrenes with Thiosulfonates and Arylboronic Acids via a Radical Relay Pathway

, 2020
A general and practical copper-catalyzed intermolecular difunctionalization strategy of styrenes with methyl thiosulfonates and arylboronic acids has been developed.
Qingjin Liang, P. Walsh, Tiezheng Jia
semanticscholar   +1 more source

Palladium-Catalyzed Enantioselective Thiocarbonylation of Styrenes.

Angewandte Chemie, 2019
A highly enantioselective thiocarbonylation of styrenes with CO and thiols has been achieved by Pd-catalysis, providing highly enantioenriched thioesters in good to excellent yields. Key to the successful execution of this reaction is the use of a chiral
Xihong Wang, Bing Wang, Xue-Song Yin, Wangzhi Yu, Yangzhen Liao, Jialin Ye, Min Wang, Lian-rui Hu, J. Liao   +8 more
semanticscholar   +1 more source

Cobalt-Catalyzed Radical Hydrotrifluoroethylation of Styrenes with Trifluoroethyl Iodide.

Organic Letters, 2020
The cobalt-catalyzed radical trifluoroethylation of styrenes with CF3CH2I under mild conditions is described. By controlling the reaction conditions, we realized both radical trifluoroethylation self-coupling and hydrotrifluoroethylation of styrenes. The
Bin He, Qijun Pan, Yong Guo, Qing‐Yun Chen, Chao Liu   +4 more
semanticscholar   +1 more source