Results 31 to 40 of about 480,912 (334)

Particulate-bound alkyl nitrate pollution and formation mechanisms in Beijing, China [PDF]

Atmospheric Chemistry and Physics
Fine particulate matter (PM2.5) samples were collected between November 2020 and October 2021 at the Minzu University of China in Beijing, and the n-alkyl nitrate concentrations in the PM2.5 samples were determined to investigate n-alkyl nitrate ...
J. Yang, G. Lei, J. Zhu, Y. Wu, C. Liu, K. Hu, J. Bao, Z. Zhang, W. Lin, J. Jin, J. Jin   +10 more
doaj   +1 more source

Alkyl Chain Grafted-Reduced Graphene Oxide Membrane for Effective Separation of Water/Alcohol Miscible Mixtures

Frontiers in Chemistry, 2020
Separation of water/alcohol miscible mixtures via direct filtration only under gravity is a great challenge. Here, different alkyl chain grafted-reduced graphene oxide (alkyl-RGO) is synthesized and characterized.
Hailong Zhang, Jianbo Yang, Ting Li, Xingxiang Ji, Zhen Xu, Yaling Zhu, Libin Liu   +6 more
doaj   +1 more source

Crystalline structure and thermotropic behavior of alkyltrimethylphosphonium amphiphiles [PDF]

, 2017
Quaternary organophosphonium salts bearing long alkyl chains are cationic surfactants of interest owing to their physical and biological properties.
Gamarra Montes, Ana, Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon, Muñoz Guerra, Sebastián, Urpí Garriga, Lourdes   +3 more
core   +2 more sources

Ketones from aldehydes via alkyl C(sp3)−H functionalization under photoredox cooperative NHC/palladium catalysis

Nature Communications, 2023
Direct synthesis of ketones from aldehydes features high atom- and step-economy. Yet, the coupling of aldehydes with unactivated alkyl C(sp3)-H remains challenging.
Hai-Ying Wang, Xin-Han Wang, Bang-An Zhou, Chun-Lin Zhang, Song Ye   +4 more
doaj   +1 more source

Alkylating Agents Stronger than Alkyl Triflates [PDF]

Journal of the American Chemical Society, 2004
A new class of potent electrophilic "R(+)" alkylating agents has been developed using weakly nucleophilic carborane anions as leaving groups. These reagents, R(CHB(11)Me(5)X(6)) (R = Me, Et, and i-Pr; X = Cl, Br), are prepared via metathesis reactions with conventional alkylating agents such as alkyl triflates, using the high oxophilicity of silylium ...
Kato, Tsuyoshi, Stoyanov, Evgenii, Geier, Jens, Grützmacher, Hansjörg, Reed, Christopher A   +4 more
openaire   +4 more sources

Ni/Co-Catalyzed Homo-Coupling of Alkyl Tosylates

Molecules, 2019
A direct reductive homo-coupling of alkyl tosylates has been developed by employing a combination of nickel and nucleophilic cobalt catalysts. A single-electron-transfer-type oxidative addition is a pivotal process in the well-established nickel ...
Kimihiro Komeyama, Ryusuke Tsunemitsu, Takuya Michiyuki, Hiroto Yoshida, Itaru Osaka   +4 more
doaj   +1 more source

Mechanistic Insights into Nickamine-catalyzed Alkyl-Alkyl Cross-coupling Reactions

CHIMIA, 2014
Within the last decades the transition metal-catalyzed cross-coupling of non-activated alkyl halides has significantly progressed. Within the context of alkyl-alkyl cross-coupling, first row transition metals spanning from iron, over cobalt ...
Jan Breitenfeld, Xile Hu
doaj   +1 more source

Novel mitochondrial-targeted alkyl chains act as fungal specific inhibitors of C. neoformans

Frontiers in Microbiology
Cryptococcus neoformans is the causal agent of cryptococcal meningitis in immunocompromised patients and increasing instances of anti-fungal resistance have led to investigations into new alternative antifungal targets. For example, C.
Elizabeth S. M. Edrich, Luke Young, John Spencer, Andrew McGown, Anthony L. Moore, Campbell W. Gourlay   +5 more
doaj   +1 more source

Copper(0)-mediated radical polymerisation in a self-generating biphasic system [PDF]

, 2013
Herein, we demonstrate the synthesis of well-defined poly(n-alkyl acrylate)s via copper(0)-mediated radical polymerisation in a self-generating biphasic system. During the polymerisation of n-butyl acrylate in DMSO, the polymer phase separates to yield a
Amir Atme, Athina Anastasaki, Biedroń, Boyer, Boyer, Carmichael, Christopher Waldron, Ciampolini, Contel, Cyrille Boyer, D'Hooge, David Haddleton, Ding, Faucher, Grimes, Haddleton, Haddleton, Haddleton, Haddleton, Hong, Jakubowski, Kamigaito, Kickelbick, Konkolewicz, Levere, Lou, Matyjaszewski, Matyjaszewski, Michael R. Whittaker, Mohan, Mueller, Mueller, Nguyen, Nguyen, Nguyen, Nguyen, Nguyen, Noda, Nystroem, Otazaghine, Paul Wilson, Per B. Zetterlund, Percec, Perreault, Pintauer, Pintauer, Popescu, Ragagnin, Sarbu, Shen, Silverstein, Soeriyadi, Tsarevsky, Wright   +53 more
core   +1 more source

Preparation and Thermal Modification of Disentangled Ultrahigh‐Molecular‐Weight Polyethylene Particles for Powder‐Based Additive Manufacturing

Advanced Engineering Materials, EarlyView.
Ultrahigh‐molecular‐weight polyethylene powders (<≈40 μm) with a bulk density of 260 g L−1 are prepared from a silica supported bisimine pyridine iron catalyst. The nascent product is disentangled and can be thermally densified without loss of its low viscosity.
Adrian Vaghar, Georgij Jegorenkov, Yunus Kutlu, Andreas Ostendorf, Gerrit A. Luinstra   +4 more
wiley   +1 more source