Results 91 to 100 of about 15,949 (256)

Die Aza‐Büchner–Curtius–Schlotterbeck‐Reaktion: Selektive Bildung Quartärer Kohlenstoffzentren

Angewandte Chemie, EarlyView.
Wir stellen die Aza‐Büchner–Curtius–Schlotterbeck‐(ABCS)‐Reaktion vor: eine milde, katalysatorfreie Methode zur Homologierung von Aryliminen. Im Gegensatz zum traditionellen BCS‐Mechanismus durchläuft das Diazo‐Intermediat eine selektive C─C‐Insertion zur Bildung eines quartären Zentrums.
Simon O. Angerer, Vincent George, Aryaman Pattanik, Gaia Carpentiero, Tereza Morcinková, Julia Rehbein, Burkhard König   +6 more
wiley   +1 more source

Acid-base pair-mediated copolymerization of acid-sensitive epoxides and cyclic anhydride for synthesizing recyclable thermoplastics

Nature Communications
Developing low-cost, high-performance, and chemically recyclable alternatives to bulk polyolefin commodities is critical. Aromatic polyesters synthesized via ring-opening copolymerization (ROCOP) of phthalic anhydride (PA) and olefin-derived epoxides are
Zhenbiao Xie, Zhenjie Yang, Chenyang Hu, Mingxin Niu, Yulu Zhang, Te Yang, Xuan Pang, Xuesi Chen   +7 more
doaj   +1 more source

Characterization of Oxygenated Heterocyclic Compounds and in vitro Antioxidant Activity of Pomelo Essential Oil

Drug Design, Development and Therapy, 2021
Guijie Li,1,* Yujiao Cheng,1,* Tenghui Zhang,2 Yingzhuo Li,3 Leng Han,1 Guolu Liang4 1Citrus Research Institute, Southwest University, Chongqing, People’s Republic of China; 2Chengdu Centre Testing International Group Co., Ltd., Chengdu, People ...
Li G, Cheng Y, Zhang T, Li Y, Han L, Liang G   +5 more
doaj  

Naturally occurring monoepoxides of eicosapentaenoic acid and docosahexaenoic acid are bioactive antihyperalgesic lipids[S]

Journal of Lipid Research, 2010
Beneficial physiological effects of long-chain n-3 polyunsaturated fatty acids are widely accepted but the mechanism(s) by which these fatty acids act remains unclear.
Christophe Morisseau, Bora Inceoglu, Kara Schmelzer, Hsing-Ju Tsai, Steven L. Jinks, Christine M. Hegedus, Bruce D. Hammock   +6 more
doaj   +1 more source

Asymmetric ring-opening of epoxides catalyzed by metal–salen complexes

, 2020
The asymmetric ring-opening of epoxides is an important reaction in organic synthesis, since it allows for the enantioselective installation of two vicinal functional groups with specific stereochemistry within one step from a highly available starting ...
Yutang Li, Li, Yutang, Wärnmark, Kenneth, Lidskog, Anna, Anna Lidskog, Kenneth Wärnmark, Lidskog, Anna,, Li, Yutang,, Wärnmark, Kenneth,, Lund University.   +9 more
core   +1 more source

Synthese einer Stabilen, Hydrophilen Trans‐Cycloocten‐Aminosäure Ermöglicht Schnelle Bioorthogonale Klick‐Chemie zur Herstellung von Antikörper‐Wirkstoffkonjugaten Mittels Erweiterung des Genetischen Codes

Angewandte Chemie, EarlyView.
Es wird von einer neuen trans‐Cycloocten (TCO) basierten nicht‐kanonischen Aminosäure (ncAA) berichtet, die von einer hohen Hydrophilizität und bemerkenswerter Stabilität gegen trans‐cis‐Isomerisierung charakterisiert ist. Der Einbau dieser mittels Erweiterung des genetischen Codes in einen Antikörper und nachfolgende Konjugation erzeugte ein ...
Georgi R. Genov, Dina Osmanović, Ines Bašić, Christine Koehler, Paul F. Sauter   +4 more
wiley   +1 more source

A Dual Perspective of the Action of Lysine on Soybean Oil Oxidation Process Obtained by Combining ¹H NMR and LC–MS: Antioxidant Effect and Generation of Lysine–Aldehyde Adducts

Antioxidants, 2019
Little is still known about both the effect of amino acids on the oxidation course of edible oils and the modifications that the former may undergo during this process.
Ana S. Martin-Rubio, Patricia Sopelana, Fumie Nakashima, Takahiro Shibata, Koji Uchida, María D. Guillén   +5 more
doaj   +1 more source

Enhanced Cooperative Activation Effect in the Hydrolytic Kinetic Resolution of Epoxides on [Co(salen)] Catalysts Confined in Nanoreactor

, 2008
Enhanced Cooperative Activation Effect in the Hydrolytic Kinetic Resolution of Epoxides on [Co(salen)] Catalysts Confined in ...
张磊, 刘健, 杨恒权, 杨启华, 李灿   +4 more
core  

Catalysis of Phosphorus(V)-Mediated Transformations: Dichlorination Reactions of Epoxides Under Appel Conditions

, 2016
A stereospecific triphenylphosphine oxide-catalyzed 1,2-dichlorination reaction of epoxides has been developed. The reaction is effective for a range of terminal and internal epoxides.
Xiaoping Tang (234051), Adam Przeslak (2259292), Ross M. Denton (2175604)   +2 more
core   +1 more source

Beyond Formate Trapping: A Mechanistic Framework for Homogeneous CO2‐to‐Methanol Conversion With First‐Row Transition Metals

Angewandte Chemie International Edition, EarlyView.
This review shows that converting CO2 into methanol with catalysts based on abundant first‐row metals requires more than overcoming formate formation. Success depends on balancing hydrogen activation, intermediate reactivity, product release, and catalyst stability.
Elise Boudry, Christophe M. Thomas
wiley   +1 more source