A Cu-catalyzed cross-coupling of alkyl- and phosphorus-centered radicals for C(sp)-P bond formation is introduced. Diacyl peroxides, generated in situ from aliphatic acids and HO, serve as a source for alkyl radicals and also an initiator for the generation of phosphorus radicals from H-P(O) compounds.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.orglett.2c02454 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Synthesis and Characterization of Polychlorinated Trityl Radical Substituted Phosphines.
Org Lett
January 2025
College of Chemistry, International Phosphorus Laboratory, Zhengzhou University, Zhengzhou 450001, P. R. China.
We synthesized a series of polychlorinated trityl radical substituted phenylphosphines. Through UV-vis photoluminescence (PL) spectroscopy and cyclic voltammetry, we explored the influence of the chemical modifications (oxidation/reduction, coordination, and methylation) of the phosphorus center(s) on tuning the optical and redox properties of the tris(2,4,6-trichlorophenyl)methyl (TTM) radical framework. Those compounds hold promise for applications in coordination chemistry and luminescent materials, particularly in systems where both radical and phosphine-based functionalities can be leveraged for innovative properties.
View Article and Find Full Text PDFMuon spectroscopy of a 12-phosphatetraphene with extremely efficient radical trapping properties.
Sci Rep
January 2025
Centre for Molecular and Materials Science, TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3, Canada.
This paper describes muon spin spectroscopy studies of 12-phosphatetraphene stabilized by a peri-trifluoromethyl group and a meso-aryl substituent. Even though the prepared solution in tetrahydrofuran (THF) was quite dilute (0.060 M) for transverse-field muon spin rotation (TF-µSR) measurements, the π-extended heavier congener of tetraphene presented a pair of signals due to a muoniated radical from which the muon hyperfine coupling constant (hfc) was determined.
View Article and Find Full Text PDFDevelopment of a Phototriggered Diradical Phosphoamination Strategy of Alkenes.
Org Lett
January 2025
Department of Chemistry and Chemical Biology, Indian Institute of Technology (ISM), Dhanbad, Jharkhand 826004, India.
Aminophosphonates serve as extremely important moieties with respect to their activities in biological systems. However, incorporating a Nitrogen and Phosphorus moiety by conventional techniques in ionic mode is usually associated with extensive prefunctionalization of the substrates, employing harsh conditions and reagents that limit the viability of these methods. Introducing both of these components as radicals may be a viable option.
View Article and Find Full Text PDFDiverse reactivity of a cationic N-heterocyclic phosphenium complex towards anionic substrates - substitution reduction.
Dalton Trans
January 2025
Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany.
Article Synopsis
- A cationic N-heterocyclic phosphenium iron tetracarbonyl complex was synthesized and its reactivity with various anionic reactants was investigated, resulting in different products depending on the anion involved.
- Reactions with fluoride and chloride produced neutral diazaphospholenes, while bromide and iodide led to NHP iron halides through metal addition and decarbonylation.
- At room temperature, the cationic complex primarily reduced to form a detectable Fe-centered radical, whereas at -78 °C, CH-metalation was favored, further evidenced by the characterization of a neutral borane-adduct.
- The complex’s reactivity variations are attributed to its higher electrophilicity compared to neutral complexes
Improving fire retardancy and mechanical properties of polyurethane elastomer by acid hydrotropic lignin.
Int J Biol Macromol
December 2024
USDA Forest Service, Forest Products Laboratory, Madison, WI 53726, USA. Electronic address:
Improving flame retardancy and mechanical strength of lignin-containing polyurethane is a great challenge. In this study, lignin with favorable reactivity and dispersity was extracted from poplar using acid hydrotrope p-TsOH in EtOH. The extracted acid hydrotrope lignin (AHL) was subsequently functionalized with nitrogen and phosphorus (FHL) and reacted with isocyanate to fabricate a fire-retardant polyurethane (FHL-PU).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!