The stoichiometric reaction of para-methoxyanilines and B(C6F5)3 under H2 results in reduction of the N-bound phenyl ring(s), and subsequent transannular ring closure with elimination of methanol, affording the respective 7-azabicyclo[2.2.1]heptane derivatives.
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http://dx.doi.org/10.1039/c5dt00921a | DOI Listing |
Dalton Trans
October 2024
Institut de Chimie (UMR CNRS 7177), CNRS - Université de Strasbourg, 4, rue Blaise Pascal, 67000 Strasbourg, France.
This work details the synthesis and characterization of low-coordinate Zn(II)-based organocations [(NHC)Zn(R)] incorporating extremely bulky NHCs [ITr] and [IAd] ([ITr] = ([ITr] = [(HCNCPh)C:]; [IAd] = [(HCNAd)C:], Ad = adamantyl)). Their structural features and particularities are thoroughly assessed as well as their air and water tolerance. Neutral ITr and IAd adducts [(ITr)Zn(R)] (1, R = Me; 2, R = Et) and [(IAd)Zn(R)] (3, R = Me; 4, R = Et) were synthesized by reaction of carbene [ITr] or [IAd] with a stoichiometric amount of [ZnR] and isolated in good yields.
View Article and Find Full Text PDFJ Mol Model
June 2024
Department of Chemistry, Birla Institute of Technology, Mesra, Ranchi, 835215, Jharkhand, India.
Context: Organic halides stand as invaluable reagents with diverse applications in synthetic chemistry and various industrial processes. Despite their utility, concerns arise due to their inherent toxicity. Addressing these apprehensions, hydro-dehalogenation has emerged as a promising strategy involving the replacement of halogen atoms with hydrogen atoms to transform toxic organic halides into hydrocarbons.
View Article and Find Full Text PDFOrg Biomol Chem
October 2023
Institute of Drug Discovery Technology, Ningbo University, Zhejiang, China.
Organogermacycles are important skeletons for medicinal chemistry and materials. Herein, we reported a B(CF) mediated domino hydrogermylation reaction of enones with dihydrogermanes, affording 21 variants of organogermacycle compounds. These germacyclic compounds were obtained in good to excellent yields (up to 99% yield) under mild reaction conditions.
View Article and Find Full Text PDFFrustrated Lewis pairs (FLP) comprising of B(CF) (BCF) and 2,4,6-triphenylpyridine (TPPy), P(-Tol) or tetrahydrothiophene (THT) have been shown to mediate selective C-F activation in both geminal and chemically equivalent distal C-F sites. In comparison to other reported attempts of C-F activation using BCF, these reactions appear surprisingly facile. We investigate this reaction through a combination of experimental and computational chemistry to understand the mechanism of the initial C-F activation event and the origin of the selectivity that prevents subsequent C-F activation in the monoactivated salts.
View Article and Find Full Text PDFFront Chem
November 2022
Warshel Institute for Computational Biology, School of Medicine, The Chinese University of Hong Kong (Shenzhen), Shenzhen, China.
Selective defunctionalization of synthetic intermediates is a valuable approach in organic synthesis. Here, we present a theoretical study on the recently developed B(CF)/hydrosilane-mediated reductive deamination reaction of primary amines. Our computational results provide important insights into the reaction mechanism, including the active intermediate, the competing reactions of the active intermediate, the role of excess hydrosilane, and the origin of chemoselectivity.
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