Results 101 to 110 of about 42,305 (289)

A BNAlP-heterocycle

Chemical Communications
Combining a phosphaalumene with its lighter congener, an iminoborane afforded a species with a BNAlP heterocycle.
Tim Wellnitz, Leonie Wüst, Holger Braunschweig, Christian Hering-Junghans   +3 more
openaire   +2 more sources

Stabilizing Atomically Dispersed Au With Adjacent Pt for Spatially Precise Molecule Recognition

Advanced Science, EarlyView.
A strategy to stabilize atomically dispersed Au catalysts by introducing Pt atoms into CeO2 supports is presented. Pt incorporation prevents Au aggregation, enhances Au‐O orbital coupling, and enables precise recognition of multi‐functionalized molecules, improving catalytic performance and the structural stability of Au‐based catalysts in ...
Rui Tang, Xiangyu Xiao, Jingyi Yao, Qing Wang, Qijing Gao, Nan Zhou, Fanyi Kong, Dingguan Liang, Kangning Dong, Liang Xiong, Yuwei Cao, Zhendong Lei, Liang Tang   +12 more
wiley   +1 more source

Synthesis of pyrrolo[1,2-a]indole-1,8(5H)-diones as new synthons for developing novel tricyclic compounds of pharmaceutical interest [PDF]

, 2004
In the course of our work aimed at developing novel heterocycles of pharmaceutical interest, a new tricycle, the tetrahydropyrrolo[1,2-a]indole-1,8-dione, has been synthesized by an intramolecular Friedel-Crafts acylation, as a synthon suitable to be ...
Mura, Alessio, Orecchioni, Maria, Paglietti, Giuseppe, Sannia, Luciano, Sechi, Mario   +4 more
core  

Thioether-catalysed tandem synthesis of furans and cyclic ethers or lactones [PDF]

, 2017
Acyclic conjugated ynenediones tethered to an alcohol or carboxylic acid are converted into furanyl-substituted cyclic ethers or lactones in a single step by treatment with the tetrahydrothiophene.
Clark, J. Stephen, Klaus, Verena
core   +1 more source

Adventures with Heterocycles.

Chemical and Pharmaceutical Bulletin, 2000
Elucidation of mechanisms and discovery of novel reactions are interconnected, as four research chapters from the Munich laboratory demonstrate. 1) In a new opening of the furan ring, 2-methoxyfuran and tetra-acceptor-substituted ethylenes furnish methyl acrylates, which are cis-3-substituted by a cyclopropyl ring that bears the four acceptor groups ...
openaire   +3 more sources

Precise Tailoring 3D Printed In Situ Toughening Low‐k Microwave Transparent Structure via Thiol‐acrylate Chain Transfer Behavior

Advanced Science, EarlyView.
An in situ thiol–acrylate chain transfer‐mediated toughening strategy is introduced for Digital Light Processing (DLP) printing. Benefiting from its excellent printability, a printed gyroid lattice‐filled plate (100 µm wall thickness) achieves 92% transmittance at 10 GHz under a 50° incidence angle following structural optimization. ABSTRACT The unique
Ce Bian, Kai Zheng, Ruoyu Chen, Wansong Gu, Guanxiang Zhong, Difei Liang, Longjiang Deng, Hetao Chu   +7 more
wiley   +1 more source

Synthesis and Evaluation of Selected Benzimidazole Derivatives as Potential Antimicrobial Agents

Molecules, 2015
A library of 53 benzimidazole derivatives, with substituents at positions 1, 2 and 5, were synthesized and screened against a series of reference strains of bacteria and fungi of medical relevance.
Fatmah A. S. Alasmary, Anna M. Snelling, Mohammed E. Zain, Ahmed M. Alafeefy, Amani S. Awaad, Nazira Karodia   +5 more
doaj   +1 more source

Toward Charge-neutral ‘soft scorpionates’: Coordination Chemistry and Lewis Acid Promoted Isomerization of tris(1-organo-imidazol-2-ylthio)methanes [PDF]

, 2009
Two tris(1-organo-imidazol-2-ylthio)methanes, HC(S-timR)3 (R = organo = methyl, tert-butyl), have been prepared by a triphasic reaction between chloroform, the appropriate heterocycle, and saturated aqueous solutions of Na2CO3, in the presence of a phase
Gardinier, James R., Gwengo, Chengeto, Lindeman, Sergey V., Silva, Rosalice M., Smith, Mark D.   +4 more
core   +1 more source

Direct Functionalization of Nitrogen Heterocycles via Rh-Catalyzed C−H Bond Activation [PDF]

, 2008
Nitrogen heterocycles are present in many compounds of enormous practical importance, ranging from pharmaceutical agents and biological probes to electroactive materials.
Alberico D., Alonso F., Alvarez E., Bellina F., Bercaw J. E., Bergman R. G., Campeau L.-C., Canac Y., Chang L. L., Chatani N., Chen M. S., Chiong H. A., Cho J. -Y., Christ M. L., Clement N. D., Crabtree R. H., Daugulis O., Daugulis O., Diederich F., Do H.-Q., Dwyer C. L., Dyker G., Esteruelas M. A., Ferreira E. M., Gant T. G., Garcia-Cuadrado D., Graczyk P. P., Gribble M., Herrmann W. A., Hillier A. C., Hlasta D. J., Ishiyama T., Jia C. G., Johnson J. B., Kakiuchi F., Kakiuchi F., Kalyani D., Klingler R. J., Kreher R., Larhed M., Lewis J. C., Lewis J. C., Lewis J. C., Lewis J. C., Michael J. P., Miura M., Moore E. J., Netherton M. R., Peters M. W., Pivsa-Art S., Rech J. C., Ritleng V., Stuart D. R., Tan K. L., Tan K. L., Tan K. L., Tan K. L., Tan K. L., Tunge J. A., van Assema S. G. A., Wiedemann S. H., Wiedemann S. H., Wiedemann S. H., Yanagisawa S., Zharekeev B. K.   +64 more
core   +2 more sources

Covalent Bonds Reinforced Strength and Modulus of Heterocyclic Aramid Fiber by Interfacial Aminated‐MXene Nanosheets

Advanced Science, EarlyView.
We demonstrate the covalent bonds strategy to enhance the mechanical property of PBIA fiber by using interfacial MXene‐NH2 nanosheets. The MXene‐NH2 nanosheets with reactive amino sites that can serve as nucleating agents and chain anchors to enhance orientation, crystallinity and interchain interaction of PBIA fiber via strong interfacial amido ...
Boyuan Chen, Hansheng Liu, Weiheng Kong, Ke Han, Jing Fang, Xingjiang Wu, Jianhong Xu, Hao Li   +7 more
wiley   +1 more source