The first example of metal-free oxidative hydrolysis of hydrido-siloxanes is reported. Both base-catalyzed and organocatalytic hydrolysis methods are demonstrated to transform 1,3-dihydrido-disiloxanes into 1,3-disiloxanediols. The first example of a chemoselective silane hydrolysis is demonstrated.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648610 | PMC |
| http://dx.doi.org/10.1021/acsomega.9b00121 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Covalent Organic Frameworks with Carbon-centered Radical Sites for Promoting the 4e- Oxygen Reduction Reaction.
Angew Chem Int Ed Engl
January 2025
Institute of Materials Research and Engineering, Sensor and Flexible Electronics, 2 Fusionopolis Way, 138634, SINGAPORE.
Radical covalent organic frameworks (RCOFs) have demonstrated significant potential in redox catalysis and energy conversion applications. However, the synthesis of stable RCOFs with well-defined neutral carbon radical centers is challenging due to the inherent radical instability, limited synthetic methods and characterization difficulties. Building upon the understanding of stable carbon radicals and structural modulations for preparing crystalline COFs, herein we report the synthesis of a crystalline carbon-centered RCOF through a facile post-oxidation process.
View Article and Find Full Text PDFThe Carbene Chemistry of -Sulfonyl Hydrazones: The Past, Present, and Future.
Chem Rev
January 2025
Department of Chemistry, Northeast Normal University, Changchun 130024, China.
-Sulfonyl hydrazones have been extensively used as operationally safe carbene precursors in modern organic synthesis due to their ready availability, facile functionalization, and environmental benignity. Over the past two decades, there has been tremendous progress in the carbene chemistry of -sulfonyl hydrazones in the presence of transition metal catalysts, under metal-free conditions, or using photocatalysts under photoirradiation conditions. Many carbene transfer reactions of -sulfonyl hydrazones are unique and cannot be achieved by any alternative methods.
View Article and Find Full Text PDFLewis acid-catalyzed [2π+2σ] cycloaddition of dihydropyridines with bicyclobutanes.
Chem Commun (Camb)
January 2025
Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
Herein we report a simple BF-catalyzed cycloaddition of dihydropyridines with bicyclobutanes for the expedient synthesis of novel three-dimensional azacycle-fused bicyclo[2.1.1]hexane scaffolds.
View Article and Find Full Text PDFVisible-light-mediated selenocyclization of -vinylanilides with diselenides.
Org Biomol Chem
January 2025
State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Materials Science, Hebei University, Baoding, Hebei, 071002, P. R. China.
Herein, we describe a visible-light-mediated selenocyclization of -vinylanilides with diselenides, which provides a mild and effective method for the synthesis of selenylated 4-3,1-benzoxazines. This reaction proceeds under metal-free conditions, without the need for a chemical oxidant or a controlled O atmosphere and shows a broad substrate scope with yields of up to 98%. Additionally, the process is easily scalable to the gram scale.
View Article and Find Full Text PDFTransition-metal-free dibenzoxazepinone synthesis by hypervalent iodine-mediated chemoselective arylocyclizations of -functionalized salicylamides.
Chem Commun (Camb)
January 2025
College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu 525-8577, Shiga, Japan.
We have developed transition-metal-free synthetic methodologies for dibenzoxazepinones utilizing salicylamides as starting materials and employing two distinct types of successive hypervalent iodine-mediated arylocyclizations. This synthetic protocol encompasses selective phenol -arylation of salicylamides with diaryliodonium salts, followed by electrophilic aromatic amination utilizing chemically or electronically generated hypervalent iodine reagents in the second stage of the process.
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!