Results 231 to 240 of about 48,033 (274)
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Nucleophilic Reactivities of Indoles
The Journal of Organic Chemistry, 2006The kinetics of the coupling of indole (1a), N-methylindole (1b), 5-methoxyindole (1c), and 5-cyanoindole (1d) with a set of reference benzhydryl cations have been investigated in acetonitrile and/or dichloromethane. The second-order rate constants for the reactions correlate linearly with the electrophilicity parameter E of the benzhydryl cations ...
Sami, Lakhdar +6 more
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An Anionic Aluminium Nucleophile
Angewandte Chemie International Edition, 2018The first stable anionic aluminium nucleophile was isolated by Goicoechea, Aldridge and co-workers. The aluminyl compound showed very high reactivity in metathesis reactions as well as in the oxidative addition of substrates such as dihydrogen and benzene, which opens up new perspectives in main group chemistry.
Alexander Hinz, Frank Breher
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The Nucleophilic Reactivity of Fluoromethoxycarbene
Organic Letters, 2010Activation parameters are reported for the additions of fluoromethoxycarbene (FCOMe) to alpha-chloroacrylonitrile, methyl acrylate, and acrylonitrile. The reactivity of FCOMe is compared to that of dichlorocarbene and chloromethoxycarbene.
Robert A, Moss +2 more
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Nucleophilic substitution of 4-bromomethyltriazolium with different nucleophiles
Tetrahedron, 2018Abstract 1,2,3-Triazolium salts draw much attentions in recent years. We developed a new synthetic method to heteroatom-functionalized triazoliums via nucleophilic substitution of 4-bromomethyltriazolium. This method afforded triazoliums with different S , N , and O heteroatom-substituents.
Xingyu Xu +3 more
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Latent Nucleophilicity of Dichlorocarbene
Organic Letters, 2009Rate constants and activation parameters are reported for additions of CCl(2) to methyl acrylate, acrylonitrile, and alpha-chloroacrylonitrile. The results reveal latent nucleophilicity in the addition of CCl(2) to alpha-chloroacrylonitrile, a conclusion supported by theoretical studies of the cyclopropanation reaction transition state.
Robert A, Moss +2 more
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Nucleophilic Deoxyfluorination of Catechols
Organic Letters, 2011Nucleophilic deoxyfluorinaiton of one of the two hydroxyl groups of catechols has been developed via the Umpolung concept. This method was successively applied to naturally occurring catechols, such as catechins and dopamine, to produce novel fluorinated analogues.
Hiroyuki, Nemoto +2 more
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Nucleophilic Carbenes as Organocatalysts
2008N-Heterocyclic carbenes (NHC) have become an important class of organocatalysts and class of ligands for transition-metal catalysis. In organocatalyzed umpolung reactions, thiazolium salt-derived NHC have been used successfully for decades. Even so, during recent years there has been an increased interest in NHC-catalyzed transformations and many new ...
F, Glorius, K, Hirano
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Reactions of Orthophthalaldehyde with Nucleophiles
ChemInform, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
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Activated Ni–OH Bonds in a Catalyst Facilitates the Nucleophile Oxidation Reaction
Advanced Materials, 2022Yanyong Wang, Wei Chen, Shuangyin Wang
exaly
The Aluminyl Anion: A New Generation of Aluminium Nucleophile
Angewandte Chemie - International Edition, 2021Jamie Hicks +2 more
exaly