2-Benzylindane radical cations in the gas phase (Part II): Substituent effects on regio- and stereoselective progressive hydrogen scrambling occurring prior to unimolecular fragmentation
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Mass Spectrometry"
DOI: 10.1016/j.ijms.2016.05.020
Abstract: Abstract In the present and in the preceding article, the unimolecular fragmentation of the radical cations of 2-benzylindane and eleven derivatives bearing meta - or para -substituents at the benzylic moiety have been studied with… read more here.
Keywords: hydrogen; regio stereoselective; radical cations; exchange ... See more keywords
Understanding and Optimizing the Ionization of Polycyclic Aromatic Hydrocarbons in Dielectric Barrier Discharge Sources.
Sign Up to like & getrecommendations! Published in 2019 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.9b02044
Abstract: Fundamental aspects of undoped and dopant-assisted dielectric barrier discharge ionization (DBDI) were investigated with the aim to overcoming the suboptimal ionization efficiency of non-polar species. In the absence of dopants, PAHs mostly form [M+H]+ rather… read more here.
Keywords: dielectric barrier; barrier discharge; dopant assisted; radical cations ... See more keywords
Single-Electron Oxidation of Carbene-Coordinated Pnictinidenes-Entry into Heteroleptic Radical Cations and Metalloid Clusters.
Sign Up to like & getrecommendations! Published in 2022 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.2c00249
Abstract: Stable heavy main group element radicals are challenging synthetic targets. Although several strategies have been developed to stabilize such odd-electron species, the number of heavier pnictogen-centered radicals is limited. We report on a series of… read more here.
Keywords: electron; carbene coordinated; radical cations; electron oxidation ... See more keywords
Redox Isomeric Ferrocenyl Styrylruthenium Radical Cations with Diphenyl-Substituted β-Ketoenolato Ligands
Sign Up to like & getrecommendations! Published in 2019 at "Organometallics"
DOI: 10.1021/acs.organomet.9b00714
Abstract: We report on 18-valence-electron ferrocenyl vinylruthenium conjugates 4-Fc-C6H4-CH═CH-Ru(CO)Cl(PiPr3)2(PhR2acac) where PhR2acac denotes a diphenylacetylacetonato ligand with two 4-substituted (R = ... read more here.
Keywords: ferrocenyl; isomeric ferrocenyl; redox isomeric; radical cations ... See more keywords
Electrochemical Cycloaddition Reactions of Alkene Radical Cations: A Route toward Cyclopropanes and Cyclobutanes
Sign Up to like & getrecommendations! Published in 2023 at "Organic Letters"
DOI: 10.1021/acs.orglett.3c00121
Abstract: Herein, we describe a mild and efficient electrochemical method for cycloaddition reactions of alkene radical cations. Anodic oxidation of olefins produces electrophilic alkene radical cations, which further react with either diazo compounds in a [2… read more here.
Keywords: electrochemical cycloaddition; reactions alkene; cycloaddition reactions; alkene radical ... See more keywords
Aqueous Flavin Photoredox Catalysis Drives Exclusive C3-Alkylation of Indolyl Radical Cations in Route to Unnatural Tryptophan Mimetics.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.3c01398
Abstract: One way to build chemical diversity into indoles is to oxidize them to indolyl radical cations (Ind•+). These intermediates can accept new functional groups across C2-C3 bonds or independently at C2. Less encountered is selective… read more here.
Keywords: indolyl radical; alkylation; flavin photoredox; tryptophan mimetics ... See more keywords
Bond Energies of Enamines
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DOI: 10.1021/acsomega.1c06945
Abstract: Energetics of reactive intermediates underlies their reactivity. The availability of these data provides a rational basis for understanding and predicting a chemical reaction. We reported here a comprehensive computational study on the energetics of enamine… read more here.
Keywords: enamine radical; bond; radical cations; bond energies ... See more keywords
Formation and Evolution of H2C3O+• Radical Cations: A Computational and Matrix Isolation Study.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c00295
Abstract: The family of isomeric H2C3O+• radical cations is of great interest for physical organic chemistry and chemistry occurring in extraterrestrial media. In this work, we have experimentally examined a unique synthetic route to the generation… read more here.
Keywords: chemistry; evolution h2c3o; h2c3o radical; cations computational ... See more keywords
Absorption of Low-Energy UV Radiation by Human Telomere G-Quadruplexes Generates Long-Lived Guanine Radical Cations.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.7b05931
Abstract: Telomeres, which are involved in cell division, carcinogenesis, and aging and constitute important therapeutic targets, are prone to oxidative damage. This propensity has been correlated with the presence of guanine-rich sequences, capable of forming four-stranded… read more here.
Keywords: absorption; telomere quadruplexes; human telomere; radical cations ... See more keywords
Radical cations of twisted acenes: chiroptical properties and spin delocalization.
Sign Up to like & getrecommendations! Published in 2019 at "Chemical communications"
DOI: 10.1039/c9cc02735a
Abstract: We introduce the first series of enantiopure twistacene radical cations, which form reversibly upon chemical or electrochemical oxidation. Their vis-NIR chiroptical properties (Cotton effect and anisotropy factor) increase systematically with the backbone twist. The hyperfine… read more here.
Keywords: spin delocalization; cations twisted; twisted acenes; radical cations ... See more keywords
Radical cations and dications of bis[1]benzothieno[1,4]thiazine isomers
Sign Up to like & getrecommendations! Published in 2021 at "Organic Chemistry Frontiers"
DOI: 10.1039/d1qo00867f
Abstract: Radical cations and dications of three isomeric bis[1]benzothieno[1,4]thiazines are (electro)chemically generated, spectroscopically characterized and assigned by (TD)DFT calculations. read more here.
Keywords: benzothieno thiazine; dications bis; bis benzothieno; thiazine isomers ... See more keywords