Results 41 to 50 of about 2,572 (189)

Synthesis of a Novel Amine‐Based Curing Agent for Epoxy Resins Derived From Vanillin

Journal of Applied Polymer Science, EarlyView.
The four‐step synthesis of a new bio‐based amine hardener is described starting from vanillin as a bio‐based compound. The hardener ADBA was utilized to cure DGEBA and the resulting Tg,tanδmax was determined via DMA. Compared to other bio‐based curing agents, our curing agent is obtainable in a high yield and leads to a superior Tg of 135°C.
Bastian Hahn, Gerd Wehnert, Elisabeth Schamel, Dominik Söthje   +3 more
wiley   +1 more source

Design, synthesis and cholinesterase inhibitory properties of new oxazole benzylamine derivatives

Journal of Enzyme Inhibition and Medicinal Chemistry, 2020
The enzymes acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) are primary targets in attenuating the symptoms of neurodegenerative diseases.
Ivana Šagud, Nikolina Maček Hrvat, Ana Grgičević, Tena Čadež, Josipa Hodak, Milena Dragojević, Kornelija Lasić, Zrinka Kovarik, Irena Škorić   +8 more
doaj   +1 more source

Weak‐Solvent‐Coordination Inducing MnNCN Preferential Orientation Toward High‐Capacity and Fast‐Charge Lithium‐Ion Storage

Carbon Energy, EarlyView.
Preferentially oriented MnNCN nanosheets with high active (003) facets were synthesized by an aqueous weak solvent‐coordination strategy, and highly integrated MnNCN/CNT composite was in‐situ constructed as a high‐capacity fast‐charging anode. NCM811//MnNCN/CNT pouch cell exhibits a high energy density of 325 Wh kg−1 with a long cycle‐life over 200 ...
Penghui Guo, Chongteng Wu, Mengying Guo, Xing Shen, Yiming Zhang, Junying Li, Jizhuang He, Jingze Guo, Jing Wang, Yufeng Luo, Weiyou Yang, Guoqiang Tan   +11 more
wiley   +1 more source

Titanium‐Catalyzed Diastereoselective Keto‐ and Iminonitrile Cyclizations

Chemistry – A European Journal, EarlyView.
The titanium(III)‐catalyzed diastereoselective cyclization of readily‐available substituted ketonitriles gives cyclopentanones in good yield and stereoselectivity. Subsequent 1,2‐addition allows the preparation of cyclopentyls with three consecutive stereocenters.
Christoph Kern, Ritu Singh, Michael A. Unkrig‐Bau, Lukas Jakob, Jan Streuff   +4 more
wiley   +1 more source

XX.—Interaction of benzylamine and ethylic chloracetate [PDF]

J. Chem. Soc., Trans., 1894
n ...
Mason, Arthur T., Winder, Goodlatte R.
openaire   +1 more source

A Selectfluor‐based Polonovski Rearrangement Leading to Novel Entities for Synthetic and Medicinal Applications

Chemistry – A European Journal, EarlyView.
Starting from carboxylic acids and Selectfluor‐derivatives, functionalized diazabicyclooctanes can be obtained via a novel Polonovski‐type rearrangement proceeding under mild reaction conditions. Besides their use in organic synthesis the unique structure and reactivity of the rearrangement products enables applications in medicinal chemistry ...
Jakob Kuhn, Susanne Gradl, Vanessa Osterloh, Peter Gmeiner, Harald Hübner, Markus R. Heinrich   +5 more
wiley   +1 more source

Theoretical Framework for Predicting Dynamic Covalent Exchange Based on Proton Affinities and Proton‐Transfer Assistance

Chemistry – A European Journal, EarlyView.
Proton‑transfer catalysis controls acylsemicarbazide dissociation, linking proton affinity to exchange kinetics and enabling predictive design of robust, tunable dynamic covalent networks. ABSTRACT We provide design principles for predicting bond exchange kinetics in acylsemicarbazide (ASC)‐based systems that can be applied to tuning the properties of ...
Siebe Lekanne Deprez, Stefan J. D. Maessen, Angelina N. van Dam, Celine Nieuwland, Pascal Vermeeren, Anja R. A. Palmans, Célia Fonseca Guerra   +6 more
wiley   +1 more source

Rhodium‐Catalyzed Synthesis of Enantioenriched α‐Substituted Primary Amines Through Asymmetric Transfer Hydrogenation

Chemistry – A European Journal, EarlyView.
Enantioenriched α‐substituted primary amines are efficiently prepared by rhodium‐catalyzed asymmetric transfer hydrogenation of ortho‐hydroxyaryl N─H imines under mild conditions using a low catalyst loading and ammonium formate as the hydrogen source in high yields (up to 99%) and enantioselectivities (up to 99% ee).
Chonghuo Liu, Guillaume Lefèvre, Qin Yin, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +4 more
wiley   +1 more source

Synthesis of 4-styrylquinazolines enabled by a hypervalent iodine-promoted oxidative amination cascade

Tetrahedron Chem
Efficient synthetic routes to pharmaceutically important 4-styrylquinazolines scaffolds are of considerable interest. Herein, we report a concise synthesis of 4-styrylquinazoline derivatives via a hypervalent iodine-promoted oxidative amination cascade ...
Lipeng Long, Ziyi Yu, Ziwen Huang, Min Ye, Wenjun Luo, Xunjin Jiang, Zhengwang Chen, Zhong-Xia Wang   +7 more
doaj   +1 more source

AIEE Active Nanoassemblies of Pyrazine Based Organic Photosensitizers as Efficient Metal-Free Supramolecular Photoredox Catalytic Systems

Scientific Reports, 2019
Pyrazine derivatives DIPY, TETPY and CNDIPY have been designed and synthesized which form fluorescent supramolecular assemblies in mixed aqueous media due to their AIEE and ICT characteristics.
Shruti Dadwal, Harnimarta Deol, Manoj Kumar, Vandana Bhalla   +3 more
doaj   +1 more source