Results 21 to 30 of about 5,406 (201)

One-Pot Phosphonylation of Heteroaromatic Lithium Reagents: The Scope and Limitations of Its Use for the Synthesis of Heteroaromatic Phosphonates

open access: yesMolecules, 2023
A one-pot lithiation–phosphonylation procedure was elaborated as a method to prepare heteroaromatic phosphonic acids. It relied on the direct lithiation of heteroaromatics followed by phosphonylation with diethyl chlorophosphite and then oxidation with ...
Ewa Chmielewska   +4 more
doaj   +1 more source

Synthesis of Mixed Arylalkyl Tertiary Phosphines via the Grignard Approach

open access: yesMolecules, 2022
Trialkyl and triaryl phosphines are important classes of ligands in the field of catalysis and materials research. The wide usability of these low-valent phosphines has led to the design and development of new synthesis routes for a variety of phosphines.
Ashanul Haque   +4 more
doaj   +1 more source

The bis(Biphenyl)phosphorus Fragment in Trivalent and Tetravalent P-Environments

open access: yesInorganics, 2021
Diaryl substituted phosphorus (III) compounds are commonly used motifs in synthesis. Although the basic synthetic routes to these molecules starting from PCl3 are well reported, sterically hindered aryl substituents can be difficult to introduce ...
Jonas Hoffmann   +3 more
doaj   +1 more source

Assessment of the Equilibrium Constants of Mixed Complexes of Rare Earth Elements with Acidic (Chelating) and Organophosphorus Ligands

open access: yesSeparations, 2022
A survey of the experimental equilibrium constants in solution for the mixed complexes of 4f ions with acidic (chelating) and O-donor organophosphorus ligands published in the period between 1954 and 2022 is presented.
Maria Atanassova
doaj   +1 more source

The Backbone of Success of P,N-Hybrid Ligands: Some Recent Developments

open access: yesMolecules, 2022
Organophosphorus ligands are an invaluable family of compounds that continue to underpin important roles in disciplines such as coordination chemistry and catalysis.
Martin B. Smith
doaj   +1 more source

Homolytic substitution at phosphorus for C–P bond formation in organic synthesis

open access: yesBeilstein Journal of Organic Chemistry, 2013
Organophosphorus compounds are important in organic chemistry. This review article covers emerging, powerful synthetic approaches to organophosphorus compounds by homolytic substitution at phosphorus with a carbon-centered radical. Phosphination reagents
Hideki Yorimitsu
doaj   +1 more source

Origin of catalytic activity differences between phosphine and phosphine oxide-based structures in the water-crosslinkable polyalkoxysilane composition [PDF]

open access: yesPolyolefins Journal, 2021
Organocatalysts have attracted enormous interest in the water-crosslinking reaction in silane-grafted polyolefins (SGPOs) system owing to their simplicity, low toxicity and environmentally benign nature compared to organotin catalysts, which are most ...
Tanaka Shohei, Kenta Adachi
doaj   +1 more source

1-(N-Acylamino)alkyltriarylphosphonium Salts with Weakened Cα-P+ Bond Strength—Synthetic Applications

open access: yesMolecules, 2018
The α-amidoalkylating properties of 1-(N-acylamino)alkyltriarylphosphonium salts with weakened Cα-P+ bond strength are discussed and examined.
Jakub Adamek   +4 more
doaj   +1 more source

Solvent and solvation effects on reactivities and mechanisms of phospho group transfers from phosphate and phosphinate esters to nucleophiles

open access: yesFrontiers in Chemistry, 2023
Organophosphorus esters fulfil many industrial, agricultural, and household roles. Nature has deployed phosphates and their related anhydrides as energy carriers and reservoirs, as constituents of genetic materials in the form of DNA and RNA, and as ...
Ikenna Onyido   +3 more
doaj   +1 more source

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