A novel strategy for the synthesis of sulfides and selenides from phosphonium salts and thio- or selenesulfonates, commercially available compounds, is described. When phosphoranes were used in the reaction, different products were obtained. The methodology does not require the use of metals, reactive species, or anhydrous conditions to be performed.
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http://dx.doi.org/10.1021/acs.joc.1c00114 | DOI Listing |
Org Lett
January 2025
Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China.
Vicinal bis(tetraarylphosphonium) salts have scarcely been reported in the literature. In this study, we demonstrate that visible-light-induced difunctionalization of -trifluoromethylsulfonylated diaryliodonium salts conveniently furnishes bis(phosphonium) salts without additional catalysts or photoinitiators. The methodology establishes a practical platform for the preparation of bis(phosphonium) salts using readily available tertiary phosphines.
View Article and Find Full Text PDFRSC Adv
January 2025
Department of Chemistry, Università degli Studi di Milano Via Camillo Golgi, 19 20133 Milano Italy https://www.fasanolab.com.
Pyridines can be deuterated at the remote sites by treatment with KOBu in DMSO- , although without discrimination between the - and -position. Herein, base-catalyzed deuterations have been studied, computationally and experimentally, using a series of pyridyl phosphonium salts with a temporary electron-withdrawing group to block the -position while increasing the acidity in the other positions.
View Article and Find Full Text PDFChemistry
January 2025
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstr. 21, 79104, Freiburg, Germany.
The bonding situation in [Fp-P][Al(OR)] (1) (Fp = (CO)CpFe, R = C(CF)) gives rise to an Umpolung of the P fragment, which should make it accessible for nucleophiles. To investigate this projected reactivity, the complex was combined with a series of hydroxy-nucleophiles - that all do not react with free P - leading to a variety of P building blocks. With excess of R-OH (R = Me, Et, Ph), the thermodynamically more stable complex salts [Fp-P(H)(OR))][Al(OR)] (x=2,1,0) (2b-2d) are formed and show that the phosphonium type pathway is accessible.
View Article and Find Full Text PDFPolymers (Basel)
November 2024
Faculty of Dental Medicine, "Apollonia" University of Iasi, 11 Pacurari Street, 700115 Iasi, Romania.
(1) Background: Since the discovery of antibiotics in the first half of the 20th century, humans have abused this privilege, giving rise to antibiotic-resistant pathogens. Recent research has brought to light the use of antimicrobial peptides in polymers, hydrogels, and nanoparticles (NPs) as a newer and safer alternative to traditional antibiotics. (2) Methods: This review article is a synthesis of the scientific works published in the last 15 years, focusing on the synthesis of polymers with proven antimicrobial properties.
View Article and Find Full Text PDFChemistry
January 2025
Department: Photocatalysis & Synthetic Methodology Lab (PSML), Amity Institute of Click Chemistry Research & Studies (AICCRS), Amity University, Noida, 201303, India.
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