Stable cyclopalladated complexes containing an (sp)C-Pd bond were synthesized α-CH deprotonation and palladation of -alkyl groups of carbene ligands bearing electron-withdrawing substituents. The strong electron donating strengths of the resulting C^C chelators were experimentally identified, and the palladacycle underwent template-directed, versatile C-halogenation with X.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/d3dt00113j | DOI Listing |
Angew Chem Int Ed Engl
January 2025
Chang Chun Institute of Applied Chemistry Chinese Academy of Sciences, State Key Laboratory of Electroanalytical Chemistry, 5625 Renmin Street, 130022, Changchun, CHINA.
Single-atom catalysts (SACs) with high metal loadings are highly desirable but still challenging for large scale synthesis. Here we report a new technique named as dry-solid-electrochemical synthesis (DSES) for a general large-scale synthesis of SACs with high metal loadings in an energy-conservation and environment-friendly way. With it, a series of pure carbon-supported metal SACs (Platinum up to 35.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States.
Ni-catalyzed asymmetric reductive cross-coupling reactions provide rapid and modular access to enantioenriched building blocks from simple electrophile precursors. Reductive coupling reactions that can diverge through a common organometallic intermediate to two distinct families of enantioenriched products are particularly versatile but underdeveloped. Here, we describe the development of a bis(oxazoline) ligand that enables the desymmetrization of -anhydrides.
View Article and Find Full Text PDFMolecules
December 2024
College of Environmental and Chemical Engineering, Dalian University, Dalian 116622, China.
-Butyl hypochlorite was employed as a versatile reagent for chlorooxidation of indoles, chlorination of 2-oxindoles, and decarboxylative chlorination of the indole-2-carboxylic acids. Four types of products including 2-chloro-3-oxindoles, 2,2-dichloro-3-oxindoles, 3,3-dichloro-2-oxindoles, and 2,3-dichloroindoles could be selectively obtained in moderate to excellent yields by switching the substrates. Various synthetically useful functional groups, such as halogen atoms, cyano, nitro, and methoxycarbonyl groups, remain intact during the reactions.
View Article and Find Full Text PDFOrg Biomol Chem
January 2025
Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, Shanghai University, 99 Shang-Da Road, Shanghai 200444, China.
Herein, we report a Ni-catalyzed cross-electrophile coupling of aryl/vinyl halides with benzothiazolium salts derived from alcohols. Our findings demonstrate that primary alkyl benzothiazolium salts serve as effective C(sp)-O substrates, facilitating coupling with aryl and vinyl halides. This method not only enables the formal functionalization of primary alcohols but also provides experimental support for previously established sequential alcohol halogenation and Ni-catalyzed reductive coupling platforms.
View Article and Find Full Text PDFChemistry
January 2025
Department of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
The systematic nucleophilic functionalization of the cationic pentaphosphole ligand complex [Cp*Fe(η-PMe)][OTf] (A) with group 16/17 nucleophiles is reported. This method represents a highly reliable and versatile strategy for the design of novel transition-metal complexes featuring twofold substituted end-deck cyclo-P ligands, bearing unprecedented hetero-element substituents. By the reaction of A with classical group 16 nucleophiles, complexes of the type [Cp*Fe(η-PMeE)] (E=OEt (1), OBu (2), SPh (3), SePh (4)) are obtained.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!