Results 1 to 10 of about 3,346 (163)

Comparative Nitrene-Transfer Chemistry to Olefins Mediated by First-Row Transition Metal Catalysts Supported by a Pyridinophane Macrocycle with N4 Ligation [PDF]

Molecules
A 12-membered pyridinophane scaffold containing two pyridine and two tertiary amine residues is examined as a prototype ligand (tBuN4) for supporting nitrene transfer to olefins.
Himanshu Bhatia, Lillian P. Adams, Ingrid Cordsiemon, Suraj Kumar Sahoo, Amitava Choudhury, Thomas R. Cundari, Pericles Stavropoulos   +6 more
doaj   +2 more sources

Ligand-controlled regiodivergent and enantioselective hydrophosphorylation of styrenes by palladium [PDF]

Nature Communications
Asymmetric hydrophosphorylation of unsaturated compounds is a straightforward and atom-economic approach to obtain chiral organophosphorus compounds.
Chun Ma, Xinyue Wang, Tibor Soós, Junliang Zhang, Junfeng Yang   +4 more
doaj   +2 more sources

A three-step, one-pot strategy to unsymmetrical 1,1-diarylalkenes [PDF]

BMC Research Notes
Objective Develop a one-pot, three-step procedure for effective access to diverse unsymmetrical 1,1-diarylalkenes from readily accessible reagents, catalysts and substrates.
Vijayaragavan Elumalai, Hanna Bähr, Karoline Nordli, Stian R. Martinsen, Cole Funk, Jørn H. Hansen   +5 more
doaj   +2 more sources

Hydrogen bonding mediated electron donor-acceptor acceptor catalysis in hydrosulfonylation and sulfonyl dehydrogenation of olefins [PDF]

Nature Communications
Electron donor-acceptor (EDA) acceptor catalysis remains significantly less developed than donor catalysis. Herein, a hydrogen-bond-mediated EDA acceptor catalysis using readily available 4,4'-di-tert-butyl-2,2'-bipyridine (dtbbpy) or 4-tert ...
Qiang Hu, Ying Li, Tianlong Zeng, Jiacheng Wu, Sheng-Ye Zhang, Li Chen, Jun Zhu   +6 more
doaj   +2 more sources

Atropisomerism in Styrene: Synthesis, Stability, and Applications

SynOpen, 2021
Atropisomeric styrenes are a class of optically active compounds, the chirality of which results from restricted rotation of the C(vinyl)–C(aryl) single bond.
Jia Feng, Zhenhua Gu
doaj   +1 more source

Frustrated Lewis pair catalyzed C–F activation of α-trifluoromethylstyrenes

Tetrahedron Chem, 2023
A frustrated Lewis pair approach is used for the monoselective C–F activation of α-trifluoromethyl styrenes. Selective C–F activation of α-trifluoromethyl styrenes with trispentafluorophenylborane (BCF) in partnership with tri(ortho-tolyl)phosphine or 2 ...
Chakyu Richard Chan, Dipendu Mandal, Rowan D. Young   +2 more
doaj   +1 more source

Controllable Synthesis of Trifluoromethyl- or gem-Difluorovinyl-containing Analogues of Neonicotinoids by the Reaction of α-(Trifluoromethyl)styrenes with 2-Nitroimino-imidazolidine

Molecules, 2023
A simple and straightforward addition or defluorination of α-(trifluoromethyl)styrenes with 2-nitroimino-imidazolidine (2a), 2-(nitromethylene)imidazolidine (2b), 2-cyanoimino-thiazolidine (2c), and (E)-1-methyl-2-nitroguanidine (2d), in a controlled ...
Jingjing He, Zhudi Sun, Yupian Deng, Ying Liu, Pai Zheng, Song Cao   +5 more
doaj   +1 more source

Enantioselective organocatalytic synthesis of axially chiral aldehyde-containing styrenes via SNAr reaction-guided dynamic kinetic resolution

Nature Communications, 2023
The precise and efficient construction of axially chiral scaffolds, particularly toward the aryl-alkene atropoisomers with impeccably full enantiocontrol and highly structural diversity, remains greatly challenging. Herein, we disclose an organocatalytic
Fengyuan Guo, Siqiang Fang, Jiajia He, Zhishan Su, Tianli Wang   +4 more
doaj   +1 more source

Carbene-catalyzed atroposelective synthesis of axially chiral styrenes

Nature Communications, 2022
Axially chiral styrenes bearing a chiral axis between a sterically non-congested acyclic alkene and an aryl ring are difficult to prepare due to low rotational barrier of the axis. Here the authors present a method to form axially chiral styrenes bearing
Jia-Lei Yan, Rakesh Maiti, Shi-Chao Ren, Weiyi Tian, Tingting Li, Jun Xu, Bivas Mondal, Zhichao Jin, Yonggui Robin Chi   +8 more
doaj   +1 more source

From‐Neutral‐to‐Neutral Reductive Radical Coupling of Non‐Activated Alcohols and Styrenes

ChemistryEurope, 2023
A reductive radical coupling reaction between non‐activated aliphatic alcohols and styrenes has been discovered through the use of low‐valent Ti‐mediated C−O bond homolysis.
Dr. Takuya Suga, Chinatsu Miki, Prof. Dr. Yutaka Ukaji   +2 more
doaj   +1 more source