carbocation


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carbocation

[¦kär·bō′kat‚ī·ən]
(organic chemistry)
A positively charged ion whose charge resides, at least in part, on a carbon atom or group of carbon atoms.
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Synthetic chemists explain to colleagues how to apply carbocation chemistry in organic synthesis.
Carbocation Chemistry: Applications in Organic Synthesis
Carbocations often quickly rearrange before proceeding with a reaction and some rearrangements are slower than others.
Unlocking the mystery of chain-branching mechanisms
Finally, aniline reacts with the resulting carbocation via a regioselective nucleophilic substitution yielding DOPO-PHM.
Improving thermal and flame-retardant properties of epoxy resins by a novel reactive phosphorous-containing curing agent
22) Note that this account is not fully consistent with the idea of the true structure being a resonance hybrid, although it still is pragmatically useful for understanding the chemical properties of the allylic carbocation.
Suggestions for thinking and talking about science and religion from the Soviet resonance controversy, a chemical counterpoint to Lysenkoism
This result indicates that the reactivity of the carbocationic species generated during the polymerization process, which includes the initiating carbocations and chain propagating carbocations, were reactive enough to polymerize the vinylether groups of the VESFA, but not so reactive that they add to double bonds of the fatty acid portion of VESFA.
Coatings derived from novel, soybean oil-based polymers produced using carbocationic polymerization
El C3 y el DIPE provienen de la reaccion de deshidratacion del 2-propanol, la cual se puede llevar a cabo por 2 mecanismos; un mecanismo tipo El que solo necesita la existencia de un sitio acido, y conduce a un carbocation, como compuesto intermedio, que se transforma luego en la olefina, y suele llevarse a cabo en sitios fuertes Lewis o Bronsted (Gervasini et al.
Efecto del potasio en catalizadores CoMo/[gamma]-[Al.sub.2][O.sub.3]-K(x) sobre el hidrotratamiento de naftas
Its biosynthesis involves the reaction of 3-methyl-2-buten-1-ol pyrophosphate (7) to generate a transient allylic cation intermediate (8), which rapidly reacts with the electron-rich 3-methyl-3-buene-1-ol pyrophosphate (9) to form a carbon-carbon chemical bond and a second carbocation intermediate (10).
New silane coupling agents for NR/truck tire applications
Protonation at the carbonyl oxygen of AA by acid catalyst: carbocation production;
Production of 4-hydroxybutyl acrylate and its reaction kinetics over Amberlyst 15 catalyst
Debido a la competencia que se establece entre las vias de reaccion del carbocation, por lo general, las sales de alquildazonio se descomponen para dar mezclas de productos y en consecuencia esta reaccion no tiene una gran utilidad sintetica.
Nitrosaminas en productos carnicos: formacion e impacto
Experimental and theoretical evaluation of energetics for nucleophilic solvent participation in the solvolysis of tertiary alkyl chlorides on the basis of gas phase bridgehead carbocation stabilities.
The pervasive influence of hyperconjugation: the intrinsic (gas phase) acidities of adamantane, adamantanol, and some of their fluorinated derivatives/Huperkonjugatsiooni koikjale tungiv moju: adamantaani, adamantanooli ja nende moningate fluoroderivaatide gaasifaasilised happelisused
12) En vez del esperado compuesto de metatatesis, estilbeno, se obtuvo unicamente el producto de polimerizacion vinilica, poliestireno, lo cual es explicable dada la estabilidad del respectivo carbocation bencilico generado por el acido de Lewis.
Produccion de materiales elasticos por polimerizacion de [alfa],[omega]-dienos aciclicos via metatesis
A key aspect of this synthesis was the TMSOTf-mediated epoxide opening that proceeds trough a carbocation mechanism leading to the possibility of methyl migration and hydride shift side reactions.
Progress towards the synthesis of an analog of Orbiculin A as a potential P-gp inhibitor. (South Carolina Academy of Sciences Abstracts)

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