For the creation of adaptable carbonyl compounds in organic synthesis, the oxidation of alcohols is a crucial step. As a sustainable alternative to the harmful traditional oxidation processes, transition-metal catalysts have recently attracted a lot of interest in acceptorless dehydrogenation reactions of alcohols. Here, using well-defined, air-stable palladium(II)-NHC catalysts (A-F), we demonstrate an effective method for the catalytic acceptorless dehydrogenation (CAD) reaction of secondary benzylic alcohols to produce the corresponding ketones and molecular hydrogen (H). Catalytic acceptorless dehydrogenation (CAD) has been successfully used to convert a variety of alcohols, including electron-rich/electron-poor aromatic secondary alcohols, heteroaromatic secondary alcohols, and aliphatic cyclic alcohols, into their corresponding value-added ketones while only releasing molecular hydrogen as a byproduct.
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http://dx.doi.org/10.3390/molecules28134992 | DOI Listing |
Chem Asian J
December 2024
IIT Indore: Indian Institute of Technology Indore, Deptm. of Chemistry, Khandwa Road, Simrol, 453552, Indore, INDIA.
This study presents a highly efficient and cost-effective Cu/CeO2 catalyst for the acceptorless dehydrogenative coupling (ADC) of o-aminobenzyl alcohols and secondary alcohols to synthesize quinolines. The catalyst demonstrated over 90% yield in quinoline production under mild conditions, exhibiting excellent tolerance to various functional groups. The Cu/CeO2 catalyst, synthesized via a co-precipitation method, was thoroughly characterized through various techniques like PXRD, XPS, and AC-STEM.
View Article and Find Full Text PDFJ Org Chem
December 2024
Department of Crystallography, Institute of Chemistry, University of Silesia, 40-006 Katowice, Poland.
A facile, cost-effective, and sustainable synthesis of substituted triazines from primary alcohols by newly synthesized nickel pincer-type complexes (-) has been described. Herein, we report the synthesis of a set of three well-defined Ni(II) O^N^O pincer-type complexes, structurally characterized by analytical, spectral, and X-ray diffraction techniques. Further, the nickel complexes are explored as efficient catalysts (4 mol %) for the construction of 2,4,6-substituted 1,3,5-triazines from readily available alcohols via an acceptorless dehydrogenative coupling (ADC) strategy.
View Article and Find Full Text PDFDalton Trans
December 2024
Institut de Química Computacional i Catàlisi and Departament de Química, Universitat de Girona, c/Maria Aurèlia Capmany 69, 17003 Girona, Catalonia, Spain.
The oxalamide skeleton is a common structural motif in many biologically active molecules. These scaffolds can be synthesized ruthenium pincer complex-catalyzed acceptorless dehydrogenative coupling of ethylene glycol and amines. In this study, we elucidate the mechanism of this oxalamide synthesis using density functional theory calculations.
View Article and Find Full Text PDFOrg Biomol Chem
December 2024
Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar, Punjab 160062, India.
Correction for 'An NNN Pd(II) pincer complex with 1,1-diaminoazine: a versatile catalyst for acceptorless dehydrogenative coupling reactions' by Aabid A. Wani , , 2024, https://doi.org/10.
View Article and Find Full Text PDFDalton Trans
December 2024
Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China.
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