Results 101 to 110 of about 92,958 (217)
Angewandte Chemie, EarlyView.Cross‐coupling/homologation sequence between a stable three‐membered‐ring carbene and isocyanides enables facile and rapid access to novel methyleneketenimines and the first bis(methyleneketenimine). Reactivity studies gave rise to the first methyleneketenimine‐transition metal complexes, unique multimodal reactivity ranging from CO2, isocyanate ...
Taichi Koike +3 more
wiley +2 more sources
Al-Mustansiriyah Journal of Pharmaceutical Sciences, 2018 A series of sulfamethoxazole derivatives attached to heterocyclic ring such as 1,2-diazepane (3), 1,3,4-oxadiazole (4), two pyrazoles (5,6), 1,2,4-triazine (7), 1,3,4-oxadiazine (8) and four novel 1,3-oxazepines (14-17)were designed and synthesized in ...
Ayad Kareem Khan
doaj +1 more source
Ambient Hydrocarbonylation of Olefins Enabled by Visible‐Light
Advanced Science, EarlyView.A novel photo‐induced methodology for hydrocarbonylation has been established, resolving the inherent conflicts between competitive olefin and CO insertion in traditional methods that necessitate harsh conditions. Accordingly, an efficient and versatile hydrocarbonylation of olefins enabled by visible‐light irradiation under ambient conditions has been
Hongchi Liu, Tianze Zhang, Hanmin Huang
wiley +1 more source
Angewandte Chemie, EarlyView.The mechanically interlocked Borromean rings are stabilized by π···π stacking interactions while the [2]catenane is stabilized by solvophobic effects. While the π···π interactions in the Borromean rings lead to severe luminescence quenching, the solvophobically assembled [2]catenane effectively circumvents these interactions, simultaneously restricting
Ye Lu +5 more
wiley +2 more sources
Molecules, 2017 A group of flavones, isoflavones, flavanones, and chalcones was subjected to small-scale biotransformation studies with the Gram-negative Stenotrophomonas maltophilia KB2 strain in order to evaluate the capability of this strain to transform flavonoid ...
Edyta Kostrzewa-Susłow +4 more
doaj +1 more source
Mechanism and Application of Baker–Venkataraman O→C Acyl Migration Reactions [PDF]
, 2014 This literature review focuses on the O→C acyl migration of aryl esters to yield the corresponding 1,3-dicarbonyl products—a reaction known as the Baker–Venkataraman rearrangement—and outlines their subsequent transformations.
Ameen, Dana, Snape, Timothy James
core +1 more source
Advanced Science, EarlyView.In this study, FeCoNiCuPt high‐entropy alloy particles (HEA) are loaded onto protonated g‐C3N4 nanosheets (HCN NSs) to construct HEA/HCN composites through an electrostatic self‐assembly method. Protonation treatment enriches the surface of g‐C3N4 nanosheets with abundant active sites and enhances their interfacial charge separation capability ...
Yunzhu Zang +3 more
wiley +1 more source
A Free N‐Heterocyclic Carbene and Its Metal Complex
Angewandte Chemie, EarlyView.Free N‐heterocyclic carbenes (NHCs) are directly visualized on ultrathin sodium‐chloride films on gold (NaCl/Au(111)) using scanning tunneling microscopy (STM), atomic force microscopy (AFM), and density functional theory (DFT). Submolecular imaging reveals their structure and frontier orbital.
Ankita Das +9 more
wiley +2 more sources
Zhipu XuebaoNitrogen heterocyclic compounds in tobacco are an important type of alkaline flavor substances in mainstream cigarette smoke. More than 1 600 nitrogen-containing heterocyclic compounds have been identified in tobacco smoke.
Hou-wei JI +10 more
doaj +1 more source
3-Amino-2H-azirine, Moleküle mit vielfältigen Reaktionsmöglichkeiten
CHIMIA, 1979 3-Amino-2H-azirines, cyclic three-membered amidines with an estimated ring strain of about 200 kJ/mole, undergo a variety of reactions. Thereby, each of the azirine bonds can be broken: Thermolysis leads to the rupture of the C(2),C(3)-bond, with strong
Heinz Heimgartner
doaj +1 more source