Results 341 to 350 of about 95,078 (410)

α‐Radical Phosphines: Synthesis, Structure, and Reactivity

Angewandte Chemie - International Edition, 2017
A series of phosphines featuring a persistent radical were synthesized in two steps by condensation of dialkyl-/diarylchlorophosphines with stable cyclic (alkyl)(amino)carbenes (cAACs) followed by one-electron reduction of the corresponding cationic ...
Manuel Alcarazo, Walter Thiel
exaly   +2 more sources

Evaluation of Bis(phosphine) Ligands for Ethylene Oligomerization: Discovery of Alkyl Phosphines as Effective Ligands for Ethylene Tri- and Tetramerization

, 2020
Fifty-three bis(phosphines) were evaluated as ligands for chromium-catalyzed ethylene tetramerization in a high-throughput reactor.
Scott D. Boelter, D. Davies, Kara A. Milbrandt, David R. Wilson, Molly Wiltzius, M. Rosen, J. Klosin   +6 more
semanticscholar   +1 more source

P-Chiral Phosphines Enabled by Palladium/Xiao-Phos-Catalyzed Asymmetric P-C Cross-Coupling of Secondary Phosphine Oxides and Aryl Bromides.

Journal of the American Chemical Society, 2019
The development of transition metal-catalyzed methods for the synthesis of P-chiral phosphine derivatives pose con-siderable challenge. Herein we present a direct Pd/Xiao-Phos-catalyzed cross-coupling reaction of easily accessible sec-ondary phosphine ...
Q. Dai, Wenbo Li, Zhiming Li, Junliang Zhang   +3 more
semanticscholar   +1 more source

Reduction of phosphine oxides to phosphines

Tetrahedron Letters, 2019
Abstract The digest is devoted to the most widespread reducing agents which are used for the reduction of tertiary and secondary phosphine oxides, phospholene oxides, phospholane oxides, phosphonates, phosphinates, α- and β-hydroxy and thiomethyl phosphine oxides, α-aminophosphine oxides. Stereoselectivity of reactions is described.
Ekaterina A. Kuchuk, Evgeniya Podyacheva, Denis Chusov, Denis Chusov   +3 more
openaire   +2 more sources

Organoplumbyl Phosphines and Phosphine Oxides

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
P. J. McCormack, Patrick J. Guiry
openaire   +2 more sources

Molybdenum-Catalyzed Ammonia Formation Using Simple Monodentate and Bidentate Phosphines as Auxiliary Ligands.

Inorganic Chemistry, 2019
We have found molybdenum-catalyzed ammonia formation using simple and commercially available monodentate and bidentate phosphines as auxiliary ligands with a simple and convenient procedure.
Y. Ashida, Kazuya Arashiba, Hiromasa Tanaka, Akihito Egi, K. Nakajima, K. Yoshizawa, Y. Nishibayashi   +6 more
semanticscholar   +1 more source

ChemInform Abstract: Phosphine—Phosphine Oxides, Phosphine—Carboxylic Acids and Phosphines Bearing Olefinic Groups

ChemInform, 2009
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Armin Boerner, Benjamin Schaeffner
openaire   +2 more sources

Catalyst-Free Arylation of Tertiary Phosphines with Diarylodonium Salts Enabled by Visible Light.

Chemistry, 2019
The visible-light-induced arylation of tertiary phosphines with aryl(mesityl)iodonium triflates to produce the quaternary phosphonium salts occurs under mild, metal, and catalyst-free conditions.
Dmitry I. Bugaenko, A. Volkov, M. V. Livantsov, M. Yurovskaya, A. Karchava   +4 more
semanticscholar   +1 more source

Phosphine

2001
Publisher Summary Phosphine is a toxicant gas with strong reducing properties capable of chemical and biologic oxidant effects. This chapter describes its usage, toxicology, metabolism, and treatment. It is an odorless and colorless gas with a molecular weight of 34.00 and density of 1.17 at 25 °C.
V.F. Garry, A.V. Lyubimov
openaire   +2 more sources

Application of Naphthylindole-Derived Phosphines as Organocatalysts in [4 + 1] Cyclizations of o-Quinone Methides with Morita-Baylis-Hillman Carbonates.

Journal of Organic Chemistry, 2018
An organocatalytic [4 + 1] cyclization of o-QMs with MBH carbonates has been established using naphthylindole-derived phosphine (NIP) as an organocatalyst.
Fei Jiang, Guiming Luo, Zi-Qi Zhu, Cong‐Shuai Wang, Guang-Jian Mei, F. Shi   +5 more
semanticscholar   +1 more source