α-Chloromethylketimines have been obtained through a gold-catalyzed hydroamination of aromatic and aliphatic 1-chloroalkynes with aromatic amines by using equimolar amounts of both reagents. This procedure has allowed the preparation and spectroscopic characterization of α-chloromethylketimines for the first time with a high degree of purity, complete conversion, and atom economy. The synthetic usefulness of the methodology has been demonstrated with the preparation of β-chloroamines and indoles.
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http://dx.doi.org/10.1021/acs.joc.1c02877 | DOI Listing |
Org Lett
January 2025
Leibniz-Institut für Katalyse e. V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany.
A palladium-catalyzed alkoxycarbonylation with two different alcohols for the synthesis of cyclobutanecarboxylates bearing an α-quaternary carbon center is presented. The reaction utilizes readily accessible starting materials, tolerates a broad scope of functional groups, and provides a straightforward and efficient approach for the synthesis of a diverse array of cyclobutanecarboxylates bearing an α-quaternary carbon. Meanwhile, this strategy effectively prevents the transition-metal-catalyzed ring-opening of cyclobutanols, preserves the cyclobutane framework, and affords 1,1-disubstituted cyclobutanecarboxylates in high yields with excellent regioisomeric ratios.
View Article and Find Full Text PDFInorg Chem
January 2025
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Miyagi 980-8577, Japan.
This study introduces a new method for synthesizing Cu-containing metastable phases through ion exchange. Traditionally, CuCl has been used as a Cu ion source for solid-state ion exchanges; however, its thermodynamic driving force is often insufficient for complete ion exchange with Li-containing precursors. First-principles calculations have identified CuSO and CuPO as more powerful alternatives, providing a higher driving force than CuCl.
View Article and Find Full Text PDFAnal Methods
January 2025
Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
Adenosine triphosphate (ATP) is crucial for cellular activity. The need for ATP detection in the field of biomedicine is rapidly increasing. Several biosensor-based approaches have been developed as a result of the growing demand for ATP detection.
View Article and Find Full Text PDFSmall Methods
January 2025
School of Chemistry and Materials, Department of Chemistry, Laboratory of Advanced Materials, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, P. R. China.
The unique adhesion capabilities of soft-bodied creatures such as leeches and octopuses have provided considerable inspiration for the development of artificial adhesive materials. However, previous studies have either focused on the design of sucker structures or concentrated on the synthesis of adhesive materials, with the combination of these two aspects not yet having been deeply investigated. In this study, inspired from leech's unique adsorption ability, a biomimetic approach is proposed that combined artificial sucker and mucus, to achieve remarkable adhesion stability on rough surfaces using 5 cm diameter silicone suction cups.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute for Inorganic Chemistry, GERMANY.
We report a selective one-step synthesis of perarylated borirenes by reaction of antiaromatic boroles with 1,4-diarylbuta-1,3-diynes. Mechanistic studies, both experimental and computational, reveal key intermediates, including boranorbornadiene and 7-borabicyclo[4.1.
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