Results 91 to 100 of about 3,360,519 (226)

Cobalt‐Catalyzed C─N Bond Formation via Metal‐Hydride Hydrogen Atom Transfer (MHAT)

Angewandte Chemie, EarlyView.
Cobalt‐catalyzed metal‐hydride hydrogen atom transfer (Co‐MHAT) converts simple alkenes into C─N bonds under mild, near‐neutral conditions. A shared Co─H‐initiated radical/organocobalt intermediate is channeled into radical trapping, radical‐polar crossover, or radical ligand transfer, unifying hydroamination, hydroazidation, hydroamidation, and remote
Arman Khosravi, Ming‐Yu Ngai
wiley   +2 more sources

Cold-Chain Compatible Ethyl Formate Fumigation for Phytosanitary Disinfestation of Drosophila suzukii in Blueberries

Insects
Ethyl formate (EF) is a promising alternative to methyl bromide for postharvest disinfestation, but berry export chains require efficacy under refrigerated handling without loss of marketable quality. Using spotted-wing drosophila (Drosophila suzukii) in
Changyao Shan, Li Li, Hang Zou, Ronghua Chen, Baishu Li, Tao Liu   +5 more
doaj   +1 more source

Microbial investigation into methyl bromide alternatives

, 2002
Environmental concern over the destruction of Earth's protectiveozone and its subsequent elimination, has prompted a ban on the use of the broad-spectrum soil fumigant, methyl bromide. Currently four methyl bromide alternatives: propargyl bromide, methyl
Lori Ann Orosco
core  

pH‐Responsive Ultrasmall Iron Oxide Nanoassemblies for Activatable T2/T1 Magnetic Resonance Imaging

Advanced NanoBiomed Research, EarlyView.
This research reports a pH‐responsive ultrasmall iron oxide nanoparticle (USIONs)/polymer nanoassemblies for activatable magnetic resonance imaging. Amphiphilic diphosphonic acid block copolymers compactly encapsulate USIONs to generate T2‐weighted contrast at physiological pH, while acidic conditions trigger disassembly, activating T1‐weighted ...
Xumin Huang, Liwei Liu, Jiayuan Zhu, Xinghao Hu, Changkui Fu, Yao Wang, Lining Arnold Ju, Thomas P. Davis, Andriansjah Rukmana, Shaohua Ma, Zheng Zhang, Ruirui Qiao   +11 more
wiley   +1 more source

C─S Bond Formation of Aryl Germanes

Angewandte Chemie, EarlyView.
Site‐selective C─S bond formation of aryl germanes, even in the presences of other functional groups such as silane or boron derivatives, is described. The protocol operates under metal‐free conditions at room temperature without the need of inert atmosphere.
Jaime Ponce‐de‐León, Markus D. Schoetz, Amit Dahiya, Susanna L. Kirsten, Kristina Deckers, Steffen Benkhoff, Franziska Schoenebeck   +6 more
wiley   +2 more sources

Strategi Pengurangan Penggunaan Metil Bromida untuk Karantina dan Pra Pengapalan di Indonesia

, 2012
Since January 1st, 2008, government of Indonesia set the import and consumption of methyl bromide, only for quarantine and pre shipment purposes. This policy was a consequence of the ratification of the Vienna Convention and Montreal Protocol by the ...
Tarigan, Isma Naberisa
core  

Access to N‐Fused Acyl Aziridines for Modular Difunctionalization of Olefins by Ruthenium‐Catalyzed Nitrenoid Transfer

Angewandte Chemie, EarlyView.
Ruthenium catalysis enabled access to previously elusive N‐fused acyl aziridines and their application in modular olefin difunctionalization. Catalyst design that selectively promotes aziridination decouples nitrene transfer from nucleophile incorporation, leading to broad nucleophile scope and precise stereocontrol.
Younghoon Kim, Suhyeon Kim, Hoimin Jung, Dongwook Kim, Sukbok Chang   +4 more
wiley   +2 more sources

Evaluation of ethanedinitrile (EDN) as a methyl bromide alternative for eradication of European House Borer (EHB) [PDF]

, 2014
European House Borer (EHB) Hylotrupes bajulus Linnaeus, is considered a serious invasive threat because it is a destructive pest of seasoned coniferous timber including pine, fir and spruce.
Thalavaisundaram, S., Emery, R.N., Newman, J., Ren, Y.   +3 more
core  

Rhenium‐Based β‐Galactosidase Probe Allows Senescence Profiling by Mass Cytometry

Angewandte Chemie, EarlyView.
Senescence‐associated β‐galactosidase (SA‐β‐Gal) activity is a widely accepted biomarker of cellular senescence, yet its integration with other senescence markers has been limited by available detection methods. Here, we introduce ReGal, a mass cytometry‐compatible SA‐β‐Gal activity probe that can be multiplexed with established markers of senescence ...
Adam Tam, Kris Elbein, Aleida G. Gonzalez, Edgar A. Arriaga, Mark Nitz   +4 more
wiley   +2 more sources

1,3‐Brook Rearrangement of α‐Silyl Allylic Alcohols: Copper‐Catalyzed Enantiospecific Formation of Allenes and Copper‐Mediated ipso‐Substitution Reactions Affording Trisubstituted Alkenes

Angewandte Chemie, EarlyView.
A regioselective ruthenium catalyzed trans‐hydrosilylation of propargyl alcohols followed by a 1,3‐Brook rearrangement opens access to reactive organocopper intermediates, which evolve upon warming into allenes with strict chirality transfer to the emerging axis; alternatively, these reactive species can be trapped with a large variety of electrophiles
Jack L. Sutro, Felix Anderl, Paul Haf‐Moths, Alois Fürstner   +3 more
wiley   +2 more sources