nucleophilic reactivity

См. также в других словарях:

• Nucleophilic conjugate addition — is a type of organic reaction. Ordinary nucleophilic additions or 1,2 nucleophilic additions deal mostly with additions to carbonyl compounds. Simple alkene compounds do not show 1,2 reactivity due to lack of polarity, unless the alkene is… …   Wikipedia

• Nucleophilic addition — In organic chemistry, a nucleophilic addition reaction is an addition reaction where in a chemical compound a π bond is removed by the creation of two new covalent bonds by the addition of a nucleophile.[1] Addition reactions are limited to… …   Wikipedia

• Reactivity–selectivity principle — In chemistry the reactivity–selectivity principle or RSP states that a more reactive chemical compound or reactive intermediate is less selective in chemical reactions. In this context selectivity represents the ratio of reaction rates. This… …   Wikipedia

• Нуклеофил — в химии (лат. nucleus «ядро», др. греч. φιλέω «любить»)  реагент, образующий химическую связь с партнером по реакции (электрофилом) по донорно акцепторному механизму, предоставляя электронную пару, образующую новую связь[1]. Вследствие… …   Википедия

• Superbase — In chemistry, a superbase is an extremely strong base. There is no commonly accepted definition for what qualifies as a superbase, but most chemists would accept sodium hydroxide as a benchmark base just as sulfuric acid is a benchmark acid (see… …   Wikipedia

• organohalogen compound — Introduction  any of a class of organic compounds (organic compound) that contain at least one halogen (halogen element) ( fluorine [F], chlorine [Cl], bromine [Br], or iodine [I]) bonded to carbon. They are subdivided into alkyl, vinylic, aryl,… …   Universalium

• Hypervalent molecule — A hypervalent molecule is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), the phosphate (PO43−) ion, chlorine …   Wikipedia

• Persistent carbene — A stable carbene: isolated 1,3 dimesitylimidazol 2 ylidene in a Schlenk flask (stir bar also present). A persistent carbene (also known as stable carbene or Arduengo carbene) is a type of carbene demonstrating particular stability. The best known …   Wikipedia

• reaction mechanism — Introduction       in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… …   Universalium

• Pyridine — Pyridine …   Wikipedia

• Nucleophile — A nucleophile is a species that donates an electron pair to an electrophile to form a chemical bond in a reaction. All molecules or ions with a free pair of electrons can act as nucleophiles. Because nucleophiles donate electrons, they are by… …   Wikipedia