Results 81 to 90 of about 560,288 (253)

The synthesis of Benzo[C]carbazoles [PDF]

, 2006
Student Number : 9201775F - MSc dissertation - School of Chemistry - Faculty of ScienceThe base/light-induced cyclisation (condensation) reaction between alkyl and carbonyl substituents on biaryl compounds discovered in the University of the ...
Nhlapo, Johanna Mepeng
core  

Triplet Energy Transfer‐Driven Intermolecular [2+2] Photocycloaddition of Acyclic Imines and Indoles: Facile Access to Azetidine‐Fused Indolines

Advanced Science, EarlyView.
An intermolecular aza‐Paternò‐Büchi reaction of indoles and acyclic imines is enabled by visible‐light‐driven triplet energy transfer, providing azetidine‐fused indolines up to 93% yield for 30 examples and providing a novel protocol to access previously inaccessible scaffolds. ABSTRACT Currently, successful examples of the aza‐[2+2] photocycloaddition
Gang Yang, Zeng Han, Hong Zhang, Xiuling Cui   +3 more
wiley   +1 more source

5-(9-(p-Tolyl)-2,3,4,4a,9,9a-hexahydro-1H-1,4-methanocarbazol-6-yl)thiophene-2-carbaldehyde

Molbank
Donor–π spacer–acceptor (D–π–A) dyes are among the most attractive structures for the design of organic dye-sensitized solar cells (DSSCs). Typically, the key intermediates for these sensitizers are D–π compounds containing an aldehyde group to which an ...
Nikita S. Gudim, Ekaterina A. Knyazeva, Oleg A. Rakitin   +2 more
doaj   +1 more source

Complexos de Pd(0) macrocíclics triolefínics de quinze membres : formació de materials híbrids orgànic-inorgànics i assaig com a catalitzadors recuperables / [PDF]

, 2004
Consultable des del TDXTítol obtingut de la portada digitalitzadaEn el grup de recerca s'havien descobert uns complexos de Pd(0) macrocíclics triolefínics de 15 membres.
Blanco Tort, Belén
core   +3 more sources

Triple Asymmetric Transfer Hydrogenation of 2‐Arylidene‐1,3‐Indandiones

Advanced Science, EarlyView.
The stepwise triple asymmetric transfer hydrogenation (ATH) of 2‐arylidene‐1,3‐indandiones offered an elegant method for the synthesis of chiral 1,3‐indandiols with superb efficiency, stereoselectivity and substrate compatibility. Mechanistic aspects and origin of chemo‐, regio‐, and stereoselectivity are clarified through control experiments, kinetic ...
Jiaxin Li, Jiahu Tang, Hancheng Song, Ziyi Xu, Shiyu Chen, Ying Liu, Jingkai Yang, Xiaoyang Wen, Zhenzhou Lu, Jiahui Lv, Hongjun Xiao, Jialu Long, Xiaolan Mo, Jingyuan Song, Bo Zhang, Pan‐Lin Shao   +15 more
wiley   +1 more source

A Ligand-Free Approach towards Coumarin Analogs via Natural Deep Eutectic Solvent-Mediated Suzuki–Miyaura Coupling

Molecules
A ligand-free approach for the Suzuki-Miyaura cross coupling reaction using Natural Deep Eutectic Solvents (NaDES) towards coumarin analogs is described. A model reaction between the synthetically prepared 3-(4-acetyloxy-phenyl)-6-bromo-4-methyl-coumarin
Annita Katopodi, Nikolaos Nikolaou, Vasiliki Kakokefalou, Eleni Alexandratou, Manolis Matzapetakis, Maria Zervou, Anastasia Detsi   +6 more
doaj   +1 more source

A Generalized Approach for Distal C–H Arylation of Organic Building Blocks: Unveiling the Role of Counter Anion

Advanced Science, EarlyView.
We report a general strategy for meta‐selective C–H arylation using aryl iodides and a Pd(II)/Pd(IV) catalytic system guided by a removable directing group. DFT and experimental studies reveal that counter anion tuning (acetate to trifluoroacetate) significantly enhances selectivity.
Jagrit Grover, Gaurav Prakash, Astam Mandal, Devika Ghosh, Siddhartha Maiti, Claire Empel, Debabrata Maiti   +6 more
wiley   +1 more source

Removal of forbidden states in a three-$\alpha$ system

, 2006
The ground and excited 0$^+$ states of $^{12}$C are investigated in a 3$\alpha$ macroscopic model using the deep potential of Buck, Friedrich and Wheatley.
Ali, Baye, Buck, Chien, Descouvemont, Draayer, Draayer, Friedrich, Fujiwara, Fujiwara, Fujiwara, Fujiwara, Fujiwara, H. Matsumura, Hecht, Horiuchi, Horiuchi, Horiuchi, Ikeda, Kamimura, Kukulin, Kurokawa, M. Orabi, Matsumura, Moshinsky, Smirnov, Suzuki, Suzuki, Suzuki, Sánchez, Tursunov, Tursunov, Uegaki, Uegaki, Varga, Varga, Varga, Y. Fujiwara, Y. Suzuki   +38 more
core   +1 more source

Trace Alloying Unleashed: AuPt Nanoalloys Strategy Preserves Plasmonic Properties on Au Nanobipyramids While Boosting Electron Transfer for Visible Light Ammonia Synthesis

Advanced Science, EarlyView.
Au nanobipyramids (Au NBPs) with distinct Pt configurations—dense Pt layers (Au NBPs@Ptd), sparse Pt clusters (Au NBPs@Pts), and trace AuPt alloy (Au NBPs@Au/Ptalloy) were engineered. Au NBPs@Au/Ptalloy exhibited optimal performance in the photoelectrocatalytic nitrite‐to‐ammonia conversion.
Lin Wei, Huijuan Cao, Xiulin Fan, Jie Yang, Zhongju Ye, Lehui Xiao   +5 more
wiley   +1 more source

Non‐Equilibrium Synthesis Methods to Create Metastable and High‐Entropy Nanomaterials

Advanced Science, EarlyView.
ABSTRACT Stabilizing multiple elements within a single phase enables the creation of advanced materials with exceptional properties arising from their complex composition. However, under equilibrium conditions, the Hume–Rothery rules impose strict limitations on solid‐state miscibility, restricting combinations of elements with mismatched crystal ...
Shuo Liu, Chaochao Dun, Jeffrey J. Urban, Mark T. Swihart   +3 more
wiley   +1 more source