Results 11 to 20 of about 14,313 (278)

Copper-Phosphido Catalysis: Enantioselective Addition of Phosphines to Cyclopropenes [PDF]

, 2023
We describe a copper-catalyst that promotes the addition of phosphines to cyclopropenes at ambient temperature. A range of cyclopropylphosphines bearing different steric and electronic properties can now be accessed in high yields and ...
Xintong, Hou, Stephanie A., Corio, Brian S., Daniel, Lindsey M., Weissman, Vy M., Dong, Jennifer S., Hirschi, Shaozhen, Nie   +6 more
core   +2 more sources

Structure-Reactivity Relationships of Buchwald-Type Phosphines in Nickel-Catalyzed Cross-Couplings [PDF]

, 2022
The dialkyl-ortho-biaryl class of phosphines, commonly known as Buchwald-type ligands, are among the most important phosphines in Pd-catalyzed cross-coupling catalysis.
Philip, Jeffrey, Abigail, Doyle, Samuel, Newman-Stonebraker, Jason, Wang   +3 more
core   +2 more sources

Terphenyl(bisamino)phosphines: Electron-rich Ligands for Gold-Catalysis [PDF]

, 2020
Terphenyl(bisamino)phosphines have been identified as effective ligands in cationic gold(I) complexes for the hydroamination of acetylenes. These systems are related to Buchwald phosphines and their steric properties have been evaluated.
Malte, Fischer, André, Schumann, Jan-Erik, Siewert, Christian, Hering-Junghans, Christoph, Schmidt   +4 more
core   +2 more sources

Phosphine Organocatalysis [PDF]

Chemical Reviews, 2018
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of
Hongchao Guo, Yi Chiao Fan, Zhanhu Sun, Yang Wu, Ohyun Kwon   +4 more
openaire   +4 more sources

Phosphines featuring a hexafluorocyclopentene skeleton: Synthesis, coordination properties, and applications for Lewis-acidic transition-metal catalysts

Results in Chemistry, 2019
Weakly σ-donating phosphines bearing a hexafluorocyclopentene skeleton were synthesized. The 1JPSe coupling constants of selenides of the fluorinated phosphines revealed substantially decreased s-character of the phosphorus lone pair orbitals of the ...
Tomohiro Agou, Nao Wada, Momoko Komatsu, Miki Nohara, Yoshiyuki Mizuhata, Norihiro Tokitoh, Takaaki Hosoya, Hiroki Fukumoto, Toshio Kubota   +8 more
doaj   +1 more source

Inhibition of Cancer Cell Proliferation and Bacterial Growth by Silver(I) Complexes Bearing a CH₃-Substituted Thiadiazole-Based Thioamide

Molecules, 2023
Ag(I) coordination compounds have recently attracted much attention as antiproliferative and antibacterial agents against a wide range of cancer cell lines and pathogens.
Despoina Varna, Elena Geromichalou, Georgia Karlioti, Rigini Papi, Panagiotis Dalezis, Antonios G. Hatzidimitriou, George Psomas, Theodora Choli-Papadopoulou, Dimitrios T. Trafalis, Panagiotis A. Angaridis   +9 more
doaj   +1 more source

Diametric calix[6]arene-based phosphine gold(I) cavitands

Beilstein Journal of Organic Chemistry, 2022
We report the synthesis and characterization, in low polarity solvents, of a novel class of diametric phosphine gold(I) cavitands characterized by a 1,2,3-alternate geometry. Preliminary catalytic studies were performed on a model cycloisomerization of 1,
Gabriele Giovanardi, Andrea Secchi, Arturo Arduini, Gianpiero Cera   +3 more
doaj   +1 more source

Mechanisms of Phosphine Toxicity [PDF]

Journal of Toxicology, 2011
Fumigation with phosphine gas is by far the most widely used treatment for the protection of stored grain against insect pests. The development of high-level resistance in insects now threatens its continued use. As there is no suitable chemical to replace phosphine, it is essential to understand the mechanisms of phosphine toxicity to increase the ...
Nath, Nisa S., Bhattacharya, Ishita, Tuck, Andrew G., Schlipalius, David I., Ebert, Paul R.   +4 more
openaire   +6 more sources

Photoswitchable electron-rich phosphines: using light to modulate the electron-donating ability of phosphines

, 2023
The synthesis and properties of photoswitchable electron-rich phosphines containing N-heterocyclic imines equipped with a photochromic dithienylethene unit are reported.The synthesis and properties of photoswitchable electron-rich phosphines containing N-
Janssen-Müller, Daniel, Sietmann, Alexander, Wilm, Lukas F. B., Das, Mowpriya, Das, Ankita, Seidl, Michael, Freitag, Matthias, Dielmann, Fabian, Buß, Florenz, Glorius, Frank   +9 more
core   +1 more source

CONFIRMATION OF CIRCUMSTELLAR PHOSPHINE [PDF]

The Astrophysical Journal, 2014
Accepted for publication in ApJ ...
Agúndez, M., Cernicharo, J., Decin, L., Encrenaz, P., Teyssier, D.   +4 more
openaire   +6 more sources