Results 201 to 210 of about 308,670 (298)

Comprehensive perspectives of metal and metal-free C-H activation approaches in pyrimidines and related heteroarenes: scope, mechanistic insights, and synthetic utility. [PDF]

RSC Adv
Mirfarah A, Hatami S, Shiri A.
europepmc   +1 more source

Design and synthesis of phosphonium ionic liquids exhibiting strong fluorescence in various solvents and liquid or glassy state. [PDF]

J Ion Liq
King D, Arnaiz YP, Mandal HD, Han H, Bhowmik PK.   +4 more
europepmc   +1 more source

Analytical use of the extractibility of phosphonium salts in the separation and determination of iridium, rhodium and osmium

, 1971
Jaim Lichtig
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para-Selective C-H Borylation of Aromatic Quaternary Ammonium and Phosphonium Salts.

Angewandte Chemie, 2022
Aromatic ammonium and phosphonium salts are important synthetic intermediates and multifunctional materials, but para-selective functionalization of the aromatic salts remains a challenge.
Shuo Lu, Tianyu Zheng, Jia-ni Ma, Zhangming Deng, Shengmeng Qin, Yu Chen, Yong Liang   +6 more
semanticscholar   +1 more source

Direct Use of Phosphonium Salts for Alkylation of p-Quinols: Formal α-Arylation of Carbonyls via a 5-Membered Betaine-Type Intermediate.

Organic Letters, 2022
Unlike phosphonium ylides used extensively for C═C bond formation, herein we disclose the direct use of phosphonium salts for site-selective alkylation to p-quinols via a 5-membered betaine-type intermediate.
Saddam Husen, Priyankar Jha, Akansha Singh, Ravindra Kumar   +3 more
semanticscholar   +1 more source

From Pyridine-N-oxides to 2-Functionalized Pyridines through Pyridyl Phosphonium Salts: An Umpolung Strategy.

Organic Letters, 2021
The reactions of pyridine-N-oxides with Ph3P under the developed conditions provide an unprecedented route to (pyridine-2-yl)phosphonium salts. Upon activation with DABCO, these salts readily serve as functionalized 2-pyridyl nucleophile equivalents ...
D. Bugaenko, M. Yurovskaya, A. Karchava
semanticscholar   +1 more source

Photoinduced Reaction of Triarylphosphines with Alkenes Forming Fused Tricyclic Phosphonium Salts.

Organic Letters, 2021
Herein reported is a photoinduced reaction of triarylphosphines with alkenes in the presence of carbonic acid. A drastic structural change occurs to produce fused tricyclic phosphonium salts having a phosphatricyclo[4.3.0.02.9]nonene core structure.
Yusuke Masuda, Masumi Uno, Masahiro Murakami   +2 more
semanticscholar   +1 more source

Aldehyde to Ketone Homologation Enabled by Improved Access to Thioalkyl Phosphonium Salts.

Organic Letters, 2021
Phosphines were previously unusable as Pummerer-type nucleophiles due to competing redox chemistry with sulfoxides. Here we circumvent this problem to achieve a formal phosphine Pummerer reaction that offers thioalkyl phosphonium salts that, in turn ...
Meghan Fragis, J. L. Deobald, Srinivas Dharavath, J. Scott, Jakob Magolan   +4 more
semanticscholar   +1 more source

Ammonium phosphonium salts

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1984
Ammonium phosphonium salts are formed when tertiary phosphines are reacted with benzalaniline in the presence of dry HCl.
G. V. Romanov, A. A. Lapin, A. N. Pudovik   +2 more
openaire   +1 more source