Results 181 to 190 of about 195,903 (365)

Tandem Polar/Radical Crossover Sequences for the Formation of Fused and Bridged Bicyclic Nitrogen Heterocycles Involving Radical Ionic Chain Reactions, and Alkene Radical Cation Intermediates, Performed under Reducing Conditions: Scope and Limitations.

, 2003
David Crich, Krishnakumar Ranganathan, Santhosh Neelamkavil, Xianhai Huang   +3 more
openalex   +2 more sources

Photoinduced Ring‐Opening Polymerization of N‐Carboxyanhydrides for the Preparation of Cross‐Linked Polypeptide Gels

Angewandte Chemie, EarlyView.
We employ a photochemical approach for ring‐opening polymerization (ROP) of α‐amino acid N‐carboxyanhydride (NCA) monomers to prepare covalently cross‐linked synthetic polypeptide gels using a photobase and light, which offers significant advantages in the synthesis of polypeptides and holds great potential for applications requiring spatial and ...
Ana Kočman, David Pahovnik, Ema Žagar, Petra Utroša   +3 more
wiley   +2 more sources

Asymmetric Hydrogenations of Imines, Vinyl Fluorides, Enol Phosphinates and Other Alkenes Using N,P-Ligated Iridium Complexes

, 2008
Jarle S. Diesen
openalex   +2 more sources

Methanol-Incorporated Photoaddition of N-Methyl-9,10-phenanthrenedicarboximide to Alkenes. Addition at Carbonyl and Phenanthrene-Ring Carbon Atoms [PDF]

, 1989
Yasuo Kubo, Mikako Nanba, Etsuko Hayashi, Takeo Araki   +3 more
openalex   +1 more source

Bimetallic Ni–Zn/TiO2 catalysts for selective hydrogenation of alkyne and alkadiene impurities from alkenes stream

, 2021
Zhao Wang, Guillaume Wang, Catherine Louis, Laurent Delannoy   +3 more
openalex   +2 more sources

Dispersion‐Enhanced Nitrogen‐Centered Photocatalysis of the Direct Hydrogen Atom Transfer

Angewandte Chemie, EarlyView.
Nitrogen‐centered acridine photocatalysts for direct hydrogen atom transfer have been developed, leveraging dispersion interactions to enhance photocatalytic activity. This approach enables diverse functionalization reactions of strong C─H bonds even under cryogenic conditions and provides a new strategy for boosting the efficiency of direct HAT ...
Jiasong Zhang, Kaitong Zhuang, Ramon Trevino, Babu Raj Dhungana, Huiying Sun, Shuyu Yin, Yuting Li, Jacob A. Sanchez, Xiaoyu Xia, Ramy Elerian, Yao Sun, Seth O. Fremin, Chao Huang, Min He, Maosheng Cheng, Oleg V. Larionov, Shengfei Jin   +16 more
wiley   +2 more sources

anti‐Markovnikov Hydroamination of Alkenes Catalyzed by a Two‐Component Organic Photoredox System: Direct Access to Phenethylamine Derivatives

, 2014
Tien Minh Nguyen, Namita Manohar, David A. Nicewicz   +2 more
openalex   +1 more source

Dual Circularly Polarized Luminescence from Chiral Boron‐Embedded Polycyclic Aromatic Hydrocarbons

Angewandte Chemie, EarlyView.
Boron‐embedded polycyclic aromatic hydrocarbons featuring an asymmetric boron center coordinated by a proximal P═O group were synthesized. Anthracene‐fused boracyclic derivatives show dual circularly polarized luminescence (CPL) arising from excited‐state P═O⋯B dissociation, which converts point chirality into C−B axial chirality.
Tatsuya Mori, Yoshiharu Sano, Tomoyuki Ikai, Yuuya Kawasaki, Katsuhiko Tomooka, Takahiro Sasamori, Shigehiro Yamaguchi   +6 more
wiley   +2 more sources

Nickel-catalysed enantioselective alkene dicarbofunctionalization enabled by photochemical aliphatic C–H bond activation [PDF]

Xia Hu, Iván Cheng‐Sánchez, Wangqing Kong, Gary A. Molander, Cristina Nevado   +4 more
openalex   +1 more source

Alkinyltriazene in photochemischen metallfreien Doyle‐Kirmse‐Umlagerungen

Angewandte Chemie, EarlyView.
Es wird eine metall‐ und additivfreie photokatalytische Doyle‐Kirmse‐Reaktion von Alkinyltriazenen beschrieben, die über Cyancarbenzwischenstufen verläuft. Diese Strategie ermöglicht den effizienten Aufbau hochsubstituierter asymmetrischer Kohlenstoffzentren mit breitem Substratspektrum und liefert synthetisch wertvolle Nitrile.
Ningning Liu, Linus Bjarne Dittmer, Melina Maag, Elena Michel, Frank Rominger, Matthias Rudolph, Andreas Dreuw, A. Stephen K. Hashmi   +7 more
wiley   +1 more source