Results 41 to 50 of about 153,572 (317)

Cyclooctyne-based reagents for uncatalyzed click chemistry: A computational survey [PDF]

, 2009
With the goal of identifying alkyne-like reagents for use in click chemistry, but without Cu catalysts, we used B3LYP density function theory (DFT) to investigate the trends in activation barriers for the 1,3-dipolar cycloadditions of azides with various
Chenoweth, David, Chenoweth, Kimberly, Goddard, William A. III   +2 more
core   +1 more source

Photoresponsive Gas‐Permeable Membranes: Fundamentals, Innovations, and Prospects

Advanced Functional Materials, EarlyView.
Photoresponsive gas‐permeable membranes can be potentially used for smart packing, carbon capture, hydrogen purification, and optical gas valves due to their remote and non‐contact activation, precise spatial and temporal control, and reversible switching capabilities.
Zhuan Wang, Qilin Li, Bart van der Bruggen, Zhen Jiang, David M. Cahill, Jingliang Li, Shuaifei Zhao   +6 more
wiley   +1 more source

The crystal structures of 6′-(4-chlorophenyl)- and 6′-(4-methoxyphenyl)-6a′-nitro-6a′,6b′,7′,9′,10′,12a′-hexahydro-2H,6′H,8′H-spiro[acenaphthylene-1,12′-chromeno[3,4-a]indolizin]-2-one

Acta Crystallographica Section E: Crystallographic Communications, 2019
In the title compounds, C32H25ClN2O4 (I) and C33H28N2O5 (II), the six-membered pyran and piperidine rings adopt envelope and chair conformations, respectively. The five-membered pyrrolidine rings adopt twist conformations. Compound (II) crystallizes with
S. Syed Abuthahir, M. NizamMohideen, V. Viswanathan, D. Velmurugan, J. Nagasivarao   +4 more
doaj   +1 more source

Overview of 1,5-Selective Click Reaction of Azides with Alkynes or Their Synthetic Equivalents

Molecules, 2023
Nowadays, the click reaction of azides with alkynes has evolved rapidly and become one of the most efficient methods to synthesize 1,2,3-triazoles, which are an important class of N-containing heterocycles.
Yaqi Zhao, Zhengqi Chai, Qingrui Zeng, Wen-Xiong Zhang   +3 more
doaj   +1 more source

Regioselective and stoichiometrically controlled conjugation of photodynamic sensitizers to a HER2 targeting antibody fragment [PDF]

, 2014
The rapidly increasing interest in the synthesis of antibody–drug conjugates as powerful targeted anticancer agents demonstrates the growing appreciation of the power of antibodies and antibody fragments as highly selective targeting moieties.
Boyle, Ross W., Bryden, Francesca, Caddick, Stephen, Chudasama, Vijay, Maruani, Antoine, Savoie, Huguette, Smith, Mark E. B.   +6 more
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

The Theoretical and Experimental Study of DiazomethaneStyrene [3+2]-Cycloadditions

Журнал органічної та фармацевтичної хімії
Pyrazolines are an important class of heterocyclic compounds known for their biological activities, making them attractive objects for medicinal chemistry.
Serhii I. Shuvakin, Serhii P. Ivonin
doaj   +1 more source

Efficient synthesis of 1,3-diaryl-4-halo-1H-pyrazoles from 3-arylsydnones and 2-aryl-1,1-dihalo-1-alkenes

Beilstein Journal of Organic Chemistry, 2011
An efficient synthesis of 1,3-diaryl-4-halo-1H-pyrazoles was achieved. The synthesis involves the [3 + 2] dipolar cycloaddition of 3-arylsydnones and 2-aryl-1,1-dihalo-1-alkenes. The process proceeds smoothly in moderate to excellent yields. 1,3-Diaryl-4-
Yiwen Yang, Chunxiang Kuang, Hui Jin, Qing Yang, Zhongkui Zhang   +4 more
doaj   +1 more source

Crystal structure of the 4 + 2 cycloadduct of photooxidized anthracene and C60 fullerene

Acta Crystallographica Section E, 2014
The structure of the title compound, 5,6-[(1R,10S)-2,9-dioxatricyclo[8.6.03,8.011,16]hexadecane-1,10-diyl]-(C60–Ih)[5,6]fullerene methanedithione 0.1-solvate, C74H10O2·0.1CS2, has tetragonal (P42/n) symmetry at 100 K. It has a unique eight-membered ring,
Gábor Bortel, Éva Kováts, Gábor Oszlányi, Sándor Pekker   +3 more
doaj   +1 more source

K₂CO₃-Promoted Formal [3+3]-Cycloaddition of N-Unsubstituted Isatin N,N′-Cyclic Azomethine Imine 1,3-Dipoles with Knoevenagel Adducts

Molecules, 2023
The synthesis of dicyclic spiropyridazine oxoindole derivatives by using [3+3]-cycloaddition of N-unsubstituted isatin N,N′-cyclic azomethine imine 1,3-dipoles was reported.
Guosheng Yang, Sicheng Li, Qiumi Wang, Huabao Chen, Chunping Yang, Zhongqiong Yin, Xu Song, Li Zhang, Cuifen Lu, Guizhou Yue   +9 more
doaj   +1 more source