Results 61 to 70 of about 81,584 (205)

Phosphine-Catalyzed Atroposelective Formal [3 + 2] Cycloaddition Desymmetrization of N‑Arylmaleimides

, 2022
Herein, a new strategy for the enantioselective synthesis of axially chiral N-aryl succinimides was devised by [3 + 2] annulation of MBH carbonates and N-aryl maleimides under chiral phosphine.
Shuangshuang Long (6259631), Huamin Wang (143068), Li-Juan Sun (3087375), Yuqiang Li (2016439), Ying-Wu Lin (2185171), Shixiong Li (2432275), Yibo Wei (3615383)   +6 more
core   +1 more source

Design, Synthesis, and Evaluation of B-(Trifluoromethyl)phenyl Phosphine–Borane Derivatives as Novel Progesterone Receptor Antagonists

Molecules
We previously revealed that phosphine–boranes can function as molecular frameworks for biofunctional molecules. In the present study, we exploited the diversity of available phosphines to design and synthesize a series of B-(trifluoromethyl)phenyl ...
Yu Miyajima, Kotaro Ochiai, Shinya Fujii
doaj   +1 more source

Influence of low temperature on lethal time extension for different life stages of Cryptolestes ferrugineus (Stephens) with strong resistance to phosphine fumigation

Grain & Oil Science and Technology, 2020
Knowing the time extension degree of full mortality in phosphine fumigation at low temperature significantly contributes to successful insect pest control, especially for reducing fumigation failure and inhibiting resistance development.
Dianxuan Wang, Judong Hou, Yilin Huang, Jianhua Lyu   +3 more
doaj   +1 more source

Synthesis and applications of Palladium complexes Part I. The synthesis, single crystal structures and liquid crystalline phase behavior of Alkoxy substituted Tolans. Part II. Palladium-Complexes of Thioureas and phosphine sulfides [PDF]

, 2008
Three series of alkoxy substituted tolans p-X-C(_6)H(_4)-C≡C-C(_6)H(_4)-p-OC(_n)H(_2n+1) [X = H (series 1), CH(_3) (series 2), OCH(_3) (series 3)] with varying chain length were synthesized by Pd/Cu-catalysed Sonogashira cross-coupling reactions of ...
Wongkhan, Kittiya
core  

Phosphine-Catalyzed [8 + 2]-Annulation of Heptafulvenes with Allenoates and Its Asymmetric Variant: Construction of Bicyclo­[5.3.0]­decane Scaffold

, 2018
In this paper, a phosphine-catalyzed [8 + 2]-annulation of heptafulvene with allenoates has been achieved under mild conditions, giving functionalized bicyclo­[5.3.0]­decane derivatives in moderate to excellent yields.
Hongchao Guo, Leijie Zhou (1695967), Chunhao Yuan (1538038), Chang Wang (328274), Zhenzhen Gao (517508), Yumei Xiao, Hongchao Guo (1538041), Chang Wang, Leijie Zhou, Chunhao Yuan, Yumei Xiao (1538035), Zhenzhen Gao   +11 more
core   +1 more source

Phosphine-Catalyzed Chemo- and Diastereoselective [2 + 2 + 2] and [3 + 2] Annulations of γ‑Methyl Allenoates with Doubly Activated Olefins: Syntheses of Highly Substituted Cyclohexanes and Cyclopentenes

, 2019
Phosphine-catalyzed chemoselective [2 + 2 + 2] and [3 + 2] annulations of γ-methyl allenoates with doubly activated olefins have been developed, which afford highly substituted cyclohexanes bearing five continuous stereogenic centers and cyclopentenes ...
Rongfang Liu (2627836), Zifeng Qin (2112856), Zhengjie He (1724923), Binbin Fan (2861696), Ruifeng Li (1651963), Rong Zhou (138287)   +5 more
core   +3 more sources

Assessment of Phosphine Resistance in Major Stored-Product Insects in Greece Using Two Diagnostic Protocols

Insects
Post-harvest losses due to insect infestation and spoilage by bacteria and molds pose significant challenges to global cereal production. This study investigates the prevalence of resistance to phosphine, a commonly used grain protection agent, in stored-
Paraskevi Agrafioti, Efstathios Kaloudis, Dimitrios Kateris, Christos G. Athanassiou   +3 more
doaj   +1 more source

Phosphine-Catalyzed Vinylation at Low Acetylene Pressure

The vinylation of various nucleophiles with acetylene at a maximum pressure of 1.5 bar is achieved by organocatalysis with easily accessible phosphines like tri-n-butylphosphine.
Thomas Schaub (1596562), Frank Bienewald (3047490), Pavel Tužina (11371959), Frank Rominger (63178), Peter Comba (385228), Ansgar Schäfer (1362813), A. Stephen K. Hashmi (7506839), Nikolai A. Sitte (6090539), Maximilian Menche (8543826)   +8 more
core   +2 more sources

Visualization Analysis of Research Status and Hot Spots of Phosphine Based on CiteSpace (2004—2023)

Liang you shipin ke-ji
Phosphine plays an important role in chemistry, materials science, physics, agriculture and other fields, and is widely used in semiconductor, plastic industry and storage fumigation. In order to systematically sort out the research hotspots of phosphine
ZHANG Hui-yan, LI Yan-yu, ZI Jia-yu, CHEN Xin, CUI Peng-cheng, ZHOU Gui-ming, TAO Hai-hua, TIAN Xiao-wei   +7 more
doaj   +1 more source

Potentiodynamic Polarization Study of PH3 Electrochemical Oxidation

Electrochemical Science Advances
In this study, the electrochemical behaviour of phosphine in sulphuric acid solutions on the surface of various electrode materials was conducted by voltammetric investigations.
Ainur Tukibayeva, Abduali Bayeshov, Dina Asylbekova, Laura Aikozova, Aizhan Essentayeva   +4 more
doaj   +1 more source