Results 31 to 40 of about 81,584 (205)

Phosphine-Stabilized Digermavinylidene

open access: yes, 2019
An intramolecular germylene-phosphine Lewis pair (1) was reacted with germanium dichloride to give in 92% yield a phosphine adduct of a chloro substituted germyl-germylene (2).
Hartmut Schubert (1584901)   +5 more
core   +1 more source

Phosphine resistance status in lesser grain borer Rhyzopertha dominica (Fab.) (Coleoptera: Bostrichidae) strains originating from the tropical countries

open access: yesJulius-Kühn-Archiv, 2018
Stored product beetles that are resistant to the fumigant phosphine (hydrogen phosphide) have been reported for more than 50 years in many places worldwide. The high levels of phosphine resistance in lesser grain borer Rhyzopertha dominica (F.) have been
Hasan, Md Mahbub   +3 more
doaj   +1 more source

Phosphine-Catalyzed (4 + 2) Annulation of Sulfonamido-Substituted Enones with 1,1-Dicyanoalkenes: Synthesis of Piperidine Derivatives

open access: yes, 2021
The δ-sulfonamido-substituted enones were employed as phosphine acceptor in phosphine-catalyzed (4 + 2) annulation of 1,1-dicyanoalkenes. They served as a four-membered synthon to react with 1,1-dicyanoalkenes under mild reaction conditions, producing ...
Min Liu   +19 more
core   +1 more source

Comment on “Phosphine in the Venusian Atmosphere: A Strict Upper Limit From SOFIA GREAT Observations” by Cordiner et al.

open access: yesGeophysical Research Letters, 2023
Searches for phosphine in Venus' atmosphere have sparked a debate. Cordiner et al. (2022, https://doi.org/10.1029/2022gl101055) analyze spectra from the Stratospheric Observatory For Infrared Astronomy (SOFIA) and infer
Jane S. Greaves   +5 more
doaj   +1 more source

Phosphine-catalyzed activation of cyclopropenones: a versatile C3 synthon for (3+2) annulations with unsaturated electrophiles

open access: yes, 2022
We herein report a phosphine-catalyzed (3 + 2) annulation of cyclopropenones with a wide variety of electrophilic ? systems, including aldehydes, ketoesters, imines, isocyanates, and carbodiimides, offering products of butenolides, butyrolactams ...
Shenyu Shen (17250790)   +7 more
core   +1 more source

Structural modification and performance regulation of atomically precise metal nanoclusters by phosphine

open access: yesPolyoxometalates, 2023
The ligand exchange-induced size/structural transformation (LEIST) reaction of metal nanoclusters gives researchers an effective way to understand the structural transition, broaden the methods of synthesis, and enhance the relevant performance of metal ...
Wenwen Fei   +4 more
doaj   +1 more source

Global phosphorus dynamics in terms of phosphine

open access: yesnpj Climate and Atmospheric Science, 2020
Since the detection of phosphine in the wastewater treatment plants in 1988, more and more investigations revealed that phosphine is closely related to ecological activities on a global scale.
Wanyi Fu, Xihui Zhang
doaj   +1 more source

Progress and Prospect of Control Technology for Stored Grain Pests ——Fumigation Insecticides

open access: yesLiang you shipin ke-ji, 2022
Phosphine and sulfuryl fluoride are two kinds of fumigation insecticides allowed for use in China and overseas. Phosphine is the “trump card” fumigation insecticide for stored grain, while Sulfuryl fluoride is mainly used as the phosphine resistance ...
XU Yong-an
doaj   +1 more source

Phosphine-Catalyzed Aryne Oligomerization: Direct Access to ,Bisfunctionalized Oligo(ortho-arylenes)

open access: yes, 2021
A phosphine-catalyzed oligomerization of arynes using selenocyanates was developed. The use of JohnPhos as a bulky phosphine is the key to accessing α,ω-bisfunctionalized oligo­(ortho-arylenes) with RSe as the substituent at one terminus and CN as the ...
Marcel Bürger   +13 more
core   +1 more source

Phosphine-Catalyzed Intramolecular Cyclizations of α‑Nitroethyl­allenoates Forming (Z)‑Furanone Oximes

open access: yes, 2016
A novel and efficient phosphine-catalyzed intramolecular cyclization of α-nitroethyl­allenic esters is reported. This process appears to be practical for the stereoselective syntheses of (Z)-furan-2­(3H)-one oxime derivatives in excellent yields ...
Qing-Fa Zhou (1632868)   +3 more
core   +1 more source

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