Results 41 to 50 of about 41,367 (166)

Photoredox-catalyzed intramolecular nucleophilic amidation of alkenes with β-lactams

Beilstein Journal of Organic Chemistry
The direct nucleophilic addition of amides to unfunctionalized alkenes via photoredox catalysis represents a facile approach towards functionalized alkylamides.
Valentina Giraldi, Giandomenico Magagnano, Daria Giacomini, Pier Giorgio Cozzi, Andrea Gualandi   +4 more
doaj   +1 more source

Weighted Wiener Indices of Molecular Graphs with Application to Alkenes and Alkadienes

Mathematics, 2021
There exist many topological indices that are calculated on saturated hydrocarbons since they can be easily modelled by simple graphs. On the other hand, it is more challenging to investigate topological indices for hydrocarbons with multiple bonds.
Simon Brezovnik, Niko Tratnik, Petra Žigert Pleteršek   +2 more
doaj   +1 more source

Unified Metal-Free Intermolecular Heck-Type Sulfonylation, Cyanation, Amination, Amidation of Alkenes by Thianthrenation [PDF]

, 2023
Direct and site-selective C-H functionalization of alkenes under environmentally benign conditions represents a useful and attractive yet challenging transformation to access value-added molecules.
Wei, Shu, Huan, Meng, Ming-Shang, Liu
core   +1 more source

Modeling Early Metastatic Progression in Breast Cancer Using a Barrier‐Free, Perfusable Spheroid‐on‐a‐Chip Platform

Advanced Healthcare Materials, EarlyView.
Open‐port, barrier‐free microfluidic device for modeling early metastatic progression. A centrally positioned tumor spheroid releases invasive cells that migrate through the surrounding matrix and intravasate into endothelialized lateral channels.
Vira Sharko, Claudia Olaizola‐Rodrigo, Clara Bayona, Teodora Ranđelović, Rosa Monge, Estela Solanas, Sara Oliván, Ignacio Ochoa   +7 more
wiley   +1 more source

Copper(I)-Photocatalyzed Addition of Trichloromethanesulfenyl Chloride to Olefinic Compounds

Molecules
Atom transfer radical addition (ATRA) reactions are essential transformations in organic synthetic chemistry that enable the atom-economic difunctionalization of abundant olefin feedstocks.
Nejc Petek, Tilen Zorko, Martin Škrinjar, Uroš Grošelj, Jurij Svete, Drago Kočar, Bogdan Štefane   +6 more
doaj   +1 more source

“Smelltronics”—From Gas to Smell Sensing

Advanced Materials, EarlyView.
The emerging field of smelltronics, encompassing sensing technologies for complex volatile organic compounds, holds significant potential for extracting valuable chemical information. It facilitates the noninvasive, real‐time monitoring of humans, food, and the environment.
Takeshi Ono, Tsunaki Takahashi, Jiangyang Liu, Haruka Honda, Zeng Jing, Wataru Tanaka, Takuro Hosomi, Takeshi Yanagida   +7 more
wiley   +1 more source

Characterization of an isobutylene epoxide hydrolase (IbcK) from the isobutylene-catabolizing bacterium Mycolicibacterium sp. ELW1

Applied and Environmental Microbiology
Isobutylene (IB) is produced on a large scale by the petrochemical industry and is metabolized by the aerobic alkene-metabolizing bacterium Mycolicibacterium sp. ELW1. The initial metabolite of IB catabolism by this bacterium is proposed to be 2-methyl-1,
Nicholas W. Faulkner, John B. Joyce, Christy Smith, Paul Swartz, Robert B. Rose, Eric S. Miller, Michael R. Hyman   +6 more
doaj   +1 more source

Copper-catalyzed trifluoromethylation of alkenes with an electrophilic trifluoromethylating reagent

Beilstein Journal of Organic Chemistry, 2013
An efficient method for the copper-catalyzed trifluoromethylation of terminal alkenes with an electrophilic trifluoromethylating reagent has been developed. The reactions proceeded smoothly to give trifluoromethylated alkenes in good to excellent yields.
Xiao-Ping Wang, Jin-Hong Lin, Cheng-Pan Zhang, Ji-Chang Xiao, Xing Zheng   +4 more
doaj   +1 more source

Catálise assimétrica na ciclopropanação de olefinas Asymmetric catalysis in the cyclopropanation of olefins

Química Nova, 2007
The main methodologies in the asymmetric cyclopropanation of alkenes with emphasis on asymmetric catalysis are covered. Exemples are the Simmons-Smith reaction, the use of diazoalkanes and reactions carried out by decomposition of alpha-diazoesters in ...
Raquel A. C. Leão, Vítor F. Ferreira, Sergio Pinheiro   +2 more
doaj   +1 more source

3-Benzoylisoxazolines by 1,3-Dipolar Cycloaddition: Chloramine-T-Catalyzed Condensation of α-Nitroketones with Dipolarophiles

Molecules, 2021
In this study, 3-benzoylisoxazolines were synthesized by reacting alkenes with various α-nitroketones using chloramine-T as the base. The scope of α-nitroketones and alkenes is extensive, including different alkenes and alkynes to form various ...
Xinhui Pan, Xiaobing Xin, Ying Mao, Xin Li, Yanan Zhao, Yidi Liu, Ke Zhang, Xiaoda Yang, Jinhui Wang   +8 more
doaj   +1 more source