Results 111 to 120 of about 3,273,294 (390)

Enantioselective Synthesis of Nonracemic Geminal Silylboronates by Pt-Catalyzed Hydrosilylation.

ACS Catalysis, 2018
A Pt-catalyzed enantioselective hydrosilylation of alkenylboronates is described. This reaction occurs with high regio- and enantioselectivity, providing a convenient route to chiral non-racemic geminal silylboronates. These compounds are useful reagents
A. Szymaniak, Chenlong Zhang, J. Coombs, J. Morken   +3 more
semanticscholar   +1 more source

Enantioselective Total Synthesis of Aspidophytine [PDF]

Organic Letters, 2003
[structure: see text] An enantioselective total synthesis of aspidophytine is described. The indole fragment bearing a cis-alkene substituent was efficiently prepared through radical cyclization of a 2-alkenylphenylisocyanide followed by Sonogashira coupling of the generated 2-iodoindole derivative with a functionalized acetylene unit.
Tohru Fukuyama, Shinjiro Sumi, Koji Matsumoto, Hidetoshi Tokuyama   +3 more
openaire   +4 more sources

Recent Developments in Radical Mediated Synthesis of Organostannanes.

Advanced Synthesis &Catalysis, EarlyView.
Abstract The present review aims to provide an overview of the recent developments in the preparation of aryl‐ or alkenyl stannanes via carbon‐ and tin‐centered radicals enabling chemists to synthesize organostannyl derivatives with high efficiency and under mild conditions.
Qianhang Ren, Adrian Luguera Ruiz, Maurizio Fagnoni, Stefano Protti, Di Qiu   +4 more
wiley   +1 more source

Catalytic enantioselective construction of axial chirality in 1,3-disubstituted allenes

Nature Communications, 2019
Highly enantioselective synthesis of allenes has been relying, so far, on the steric hindrance of substrates. Here the authors achieve excellent stereocontrol in the synthesis of chiral allenes with a palladium-DTBM-SEGPHOS catalytic system in a non ...
Shihua Song, Jing Zhou, Chunling Fu, Shengming Ma   +3 more
doaj   +1 more source

Stereodivergent, Diels-Alder-initiated organocascades employing α,β-unsaturated acylammonium salts: scope, mechanism, and application. [PDF]

, 2017
Chiral α,β-unsaturated acylammonium salts are novel dienophiles enabling enantioselective Diels-Alder-lactonization (DAL) organocascades leading to cis- and trans-fused, bicyclic γ- and δ-lactones from readily prepared dienes, commodity acid chlorides ...
Abbasov, Mikail E, Hudson, Brandi M, Romo, Daniel, Tantillo, Dean J   +3 more
core   +2 more sources

Proof of enantioselectivity in a multilayer with a strong exciton polariton coupling and through asymmetric polarization [PDF]

arXiv, 2023
The plasmonic investigation involves activating a multilayer consisting of silver, platinum, silica, and silicon. Hybrid waveguide and surface plasmon polariton modes define the device plasmonic activity. The presence of micrometric features on the multilayer surface facilitates the formation of the waveguide mode.
arxiv  

Enantioselective Synthesis of Trisubstituted Allenes via Cu(I)-Catalyzed Coupling of Diazoalkanes with Terminal Alkynes.

Journal of the American Chemical Society, 2016
A highly enantioselective synthesis of trisubstituted allenes has been achieved through Cu(I)-catalyzed cross-coupling of aryldiazoalkanes and terminal alkynes with chiral bisoxazoline ligands.
Wen-Dao Chu, Lei Zhang, Zhikun Zhang, Q. Zhou, F. Mo, Yan Zhang, J. Wang   +6 more
semanticscholar   +1 more source

An Enantioselective Total Synthesis of (+)‐Ricciocarpin A. [PDF]

ChemInform, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hsing-Jang Liu, Ning-Wei Jan
openaire   +4 more sources

Development of Photo‐Biocatalytic Redox System for Asymmetric Synthesis of Optically Active Amines Using Blue Light and Transaminases. A Case Study Toward Mavacamten

Advanced Synthesis &Catalysis, EarlyView.
Abstract α‐Chiral amines are versatile building blocks for the asymmetric synthesis of optically pure high‐added‐value chemicals, including pharmaceuticals, agrochemicals, and natural products. Herein, we report a one‐pot, two‐step sequential deracemization of racemic sec‐alcohols to optically enriched primary amines throught a photo‐biocatalytic ...
Natalia Antos, Aleksandra Rudzka, Anna Hoser, Tamara Reiter, Wolfgang Kroutil, Paweł Borowiecki   +5 more
wiley   +1 more source

Radical Fluoroalkylation Reactions [PDF]

, 2018
Recent protocols and reactions for catalytic radical perfluoroalkylations will be described. The production of perfluoroalkyl radicals (RF = CnF2n+1, n ≥ 2), which effect both addition and substitution reactions on organic substrates, can be realized ...
Barata Vallejo, Sebastian, Cooke, María Victoria, Postigo, A.   +2 more
core   +1 more source