Results 211 to 220 of about 308,670 (298)

Tetrakis(hydroxymethyl)phosphonium salts: Their properties, hazards and toxicities

Phosphorus Sulfur and Silicon and the Related Elements, 2020
Tetrakis(hydroxymethyl)phosphonium chloride (THPC) and sulfate (THPS) are of importance in the textile industry as flame retardants, in the oil industry as scale-removers, as biocides for water systems, in the leather industry as tanning agents, in ...
D. Moiseev, B. James
semanticscholar   +1 more source

Visible-Light-Induced Selective Photolysis of Phosphonium Iodide Salts for Monofluoromethylations.

Angewandte Chemie, 2021
The sigma (σ)-hole effect has emerged as a promising tool to construct novel architectures endowed with new properties. A simple yet effective strategy for the generation of monofluoromethyl radical is a continuing challenge within the synthetic ...
Xiangyu Chen, Qiang Liu, Yu Lu, He Sheng, Chaoshen Zhang, Xiaoyong Su, Zhi‐Xiang Wang   +6 more
semanticscholar   +1 more source

Palladium-Catalyzed Electrophilic Functionalization of Pyridine Derivatives through Phosphonium Salts.

Angewandte Chemie, 2020
Herein, we report a highly efficient and practical method for pyridine-derived heterobiaryls synthesis by resorting to palladium-catalyzed electrophilic functionalization of easily available pyridine-derived quaternary phosphonium salts.
Yuan-yuan Che, Yanni Yue, Ling‐Zhi Lin, Bingbing Pei, Xuezu Deng, C. Feng   +5 more
semanticscholar   +1 more source

Effective enantioselective recognition by chiral amino-phosphonium salts.

Angewandte Chemie, 2020
The research on chiral recognition and selection is not only fundamental in deciding the mystery of homochirality, but also informative in terms of substrate recognition in biological processes and asymmetric catalysis.
P. Rajasekar, Cavya Jose, Meghamala Sarkar, R. Boomishankar   +3 more
semanticscholar   +1 more source

Recent Advances in Phosphonium Salts‐Mediated Synthetic  Transformations

Asian Journal of Organic Chemistry
Phosphonium salts have gained significant importance in the rapid construction of biologically active natural and synthetic heterocyclic and carbocyclic scaffolds.
Abhishek Kumar, Mohammad Roshan Shoaib Savanura, Shivi Garg, Sandeep Kumar Singh, Manoj Kumar, Sonu Kumar   +5 more
semanticscholar   +1 more source

Effect of Quaternary Phosphonium Salts as Cocatalysts on Epoxide/CO2 Copolymerization Catalyzed by salen-Type Cr(III) Complexes

, 2020
Organic quaternary phosphonium salts are used in conjunction with chromium salen complexes in the alternating copolymerization of CO2 and cyclohexene oxide (CHO) or propylene oxide (PO).
L. Veronese, Massimiliano Brivio, P. Biagini, R. Po', I. Tritto, S. Losio, Laura Boggioni   +6 more
semanticscholar   +1 more source

Sulfonylation of Pyridyl Phosphonium Salts with Sulfinate Salts in Aqueous Media for the Synthesis of 4-Pyridyl Sulfones via C-P Bond Cleavage.

Organic Letters
A Na2S2O8-initiated sulfonylation of pyridyl phosphonium salts with sulfinate salts in aqueous media has been developed for facile access to 4-pyridyl sulfones.
Boyu Huo, Wen-Wen Wang, Yi-Jie Huang, Xue‐Qiang Chu, Hao Xu, Xiaocong Zhou, Weidong Rao, Zhi‐Liang Shen   +7 more
semanticscholar   +1 more source

Phosphines and Phosphonium Salts

ChemInform, 1987
AbstractFor Abstract see ChemInform Abstract in Full Text.
openaire   +1 more source

Syntheses and rearrangements of tris(hydroxymethyl)phosphine and tetrakis(hydroxymethyl)phosphonium salts

Phosphorus Sulfur and Silicon and the Related Elements, 2020
Tetrakis(hydroxymethyl)phosphonium (HOCH2)4P+ salts, particularly the chloride (THPC) and sulfate (THPS), are among the most accessible organophosphorus compounds that can be made quantitatively from PH3 and formaldehyde in aqueous media under ambient ...
D. Moiseev, B. James
semanticscholar   +1 more source

Phosphonium salts. I. The alkaline hydrolysis of some bis-phosphonium salts

Australian Journal of Chemistry, 1969
Ethane- and ethene-1,2-bisphosphonium salts are cleaved by alkali into a phosphine and a phosphine oxide with loss of the two-carbon bridge. When the phosphorus atom carries benzyl substituents, loss of the benzyl groups is competitive with loss of the bridge.
JJ Brophy, MJ Gallagher
openaire   +1 more source