Results 191 to 200 of about 195,903 (365)

Rhodium(II) Carboxylates: Novel Highly Efficient Catalysts for the Cyclopropanation of Alkenes with Alkyl Diazoacetates

, 1976
André J. Hubert, Alfred F. Noels, A. J. ANCIAUX, Philippe Teyssié   +3 more
openalex   +2 more sources

Stereodivergent Synthesis of Three Contiguous Stereogenic Centers by Cu/Ir‐Catalyzed Borylallylation

Angewandte Chemie, EarlyView.
An alkene borylallylation strategy enabled by cooperative Cu/Ir‐catalysis has been uncovered for accessing three contiguous stereogenic centres. This strategy is notable given the inherent challenges of constructing molecules with multiple stereocenters while maintaining high selectivity bearing diverse functional groups.
Suman Das, Stanna K. Dorn, M. Kevin Brown   +2 more
wiley   +2 more sources

Intermolecular Interactions Involving Heavy Alkenes H₂Si═TH₂(T = C, Si, Ge, Sn, Pb) with H₂O and HCl: Tetrel Bond and Hydrogen Bond [PDF]

, 2020
Yishan Chen, Fan Wang
openalex   +1 more source

Dual Nickel/Photoredox-Catalyzed Asymmetric Carbosulfonylation of Alkenes [PDF]

, 2023
Xiaoyong Du, Iván Cheng‐Sánchez, Cristina Nevado   +2 more
openalex   +1 more source

Temperature‐Responsive Near‐Infrared Emission Enabled by Reversible π‐Umpolung with an Alkenyl‐Strapped Diarylboryl Unit

Angewandte Chemie, EarlyView.
Coordination of a Lewis base switches an electron‐accepting tricoordinate boron center into an electron‐donating tetracoordinate one. An alkenyl‐strapped diphenylthienylboryl π‐system undergoes phosphine‐induced reversible π‐umpolung, where transformation from an acceptor–acceptor–acceptor framework to a donor–acceptor–donor system gives rise to ...
Satoru Kitamura, Mika Sakai, Shigehiro Yamaguchi   +2 more
wiley   +2 more sources

On the stability and nature of adsorbed pentene in Bronsted acid zeolite H-ZSM-5 at 323 K [PDF]

, 2016
Cnudde, Pieter, De Wispelaere, Kristof, Hajek, Julianna, Van der Mynsbrugge, Jeroen, Van Speybroeck, Veronique, Vanduyfhuys, Louis, Waroquier, Michel   +6 more
core   +1 more source

Boosting the Nucleophilicity of the Diphenylphosphide Anion with Crown Ether Supported Heavy Alkali Metals to Facilitate Highly Efficient Catalytic Alkene Isomerisation

Angewandte Chemie, EarlyView.
Here, we report a breakthrough study in catalytic alkene isomerisation using crown ether‐supported alkali metal phosphides in which the activity increases sequentially and significantly as Group One is descended with Cs(18‐crown‐6)PPh2 (1Cs) performing best.
Felix Krämer, Thomas M. Horsley Downie, Robert E. Mulvey   +2 more
wiley   +2 more sources

Dibenzazepin‐verbrückte Netzwerk‐Polymer‐Phthalocyanine als abbaubare heterogene Photokatalysatoren

Angewandte Chemie, EarlyView.
Photodynamische Dibenzazepin‐Brücke wurde in Zink‐ und Kobalt‐Netzwerk‐Polymer‐Phthalocyanine (NP‐Pcs) eingeführt, um abbaubare heterogene Photokatalysatoren zu erhalten. Zum ersten Mal spielt die Bestrahlung mit Licht eine Schlüsselrolle beim „Design, der Verwendung und dem Abbau” von NP‐Pcs.
Erem Ahmetali, Azra Kocaarslan, Vanessa Trouillet, Stefan Heißler, Stefan Bräse   +4 more
wiley   +1 more source

Dual Chemical Looping/Catalytic Process for Alkylation of Benzene With Ethane and Propane Yielding Ethylbenzene and Cumene Over Copper‐Containing Mordenite

Angewandte Chemie, EarlyView.
We report a dual chemical looping/catalytic process coupling alkane dehydrogenation with aromatic alkylation over Cu‐mordenite, yielding up to 25% alkylated aromatics with >95% selectivity per cycle. In situ NMR, FTIR spectroscopy, and DFT show alkylation proceeds via a π‐bound Cu(I)–olefin intermediate and Brønsted acid sites.
Florent J. Dubray, Yu‐Hsun Wang, Mikalai A. Artsiusheuski, Jiawei Guo, Rene Verel, Ambarish Kulkarni, Jeroen A. van Bokhoven, Vitaly L. Sushkevich   +7 more
wiley   +2 more sources

Three-component synthesis of β-thio tertiary alkylamines from simple alkenes via S_H2 homolytic substitution. [PDF]

Sci Adv
Wang H, Wang T, Li Y, He Q, Ma W, Guan X, Li Y, Bao Y, Zhao Y, Zhang Q, Vasdev N, Zheng C, Fu J.   +12 more
europepmc   +1 more source