Chapitre 7
Structure et réactivité de l’alcène
Structure et liaison des alcènes
Olefins, which are unsaturated hydrocarbons containing one or more carbon–carbon double bonds, are broadly divided into alkenes and cycloalkenes. ...
Nomenclature des alcènes
The IUPAC naming system for alkenes replaces -an- with -en- in the corresponding parent alkanes. Accordingly, a simple alkene replaces the -ane suffix of ...
Degré d'insaturation
The degree of unsaturation (U), or index of hydrogen deficiency (IHD), is defined as the difference in the number of pairs of hydrogen atoms between the ...
Isomérie des alcènes
Alkenes like 1-butene and 2-butene exhibit constitutional isomerism, as they differ in the position of the double bond. Further, 2-butene exhibits ...
Stabilités relatives des alcènes
The relative stability of alkenes can be determined by comparing their heats of hydrogenation. The lower heat of hydrogenation indicates the more stable ...
Introduction aux réactions d'addition électrophiles des alcènes
The double bond in a simple, unconjugated alkene is a region of high electron density that can act as a weak base or a nucleophile. The filled π ...
Régiosélectivité des ajouts électrophiles aux alcènes : règle de Markovnikov
If a set of reactants can yield multiple constitutional isomers, but one of the isomers is obtained as the major product, the reaction is said to be ...
À PROPOS DE JoVE
Copyright © 2025 MyJoVE Corporation. Tous droits réservés.