Alkylation - Wikipedia
Alkylation is a chemical reaction that entails transfer of an alkyl group. The alkyl group may be transferred as an alkyl carbocation , a free radical , a carbanion , or a carbene (or their equivalents).
4.10: Alkylation and Acylation of Aromatic Rings - The Friedel …
2020年6月21日 · A Friedel-Crafts alkylation reaction is an electrophilic aromatic substitution reaction in which a carbocation is attacked by a pi bond from an aromatic ring with the net result that one of the aromatic protons is replaced by an alkyl group.
Friedel-Crafts Reaction - Mechanism of Alkylation and Acylation …
An alkyl group can be added by an electrophillic aromatic substitution reaction called the Friedel-Crafts alkylation reaction to a benzene molecule. The addition of a methyl group to a benzene ring is one example.
16.3: Alkylation and Acylation of Aromatic Rings - The Friedel …
Among the most useful electrophilic aromatic substitution reactions in the laboratory is alkylation —the introduction of an alkyl group onto the benzene ring.
24.7 Reactions of Amines - Organic Chemistry - OpenStax
We’ve already studied the two most general reactions of amines—alkylation and acylation. As we saw earlier in this chapter, primary, secondary, and tertiary amines can be alkylated by reaction with a primary alkyl halide.
Alkylation - an overview | ScienceDirect Topics
Alkylation is one of the fundamental reactions used to construct complex structures. The alkylation reaction considered here replaces the hydrogen atom of a terminal alkyne by an alkyl group derived from an alkyl halide.
Alkylation - Chemistry LibreTexts
2022年2月28日 · An alkylation is a reaction or a reaction sequence that introduces one or more alkyl groups to a molecule by replacing hydrogen atoms or lone pairs with alkyl groups. eg. 1: eg. 2:
Alkylation - an overview | ScienceDirect Topics
This chapter describes homolytic alkylation reactions and presents the quantitative study of homolytic alkylation. The alkylation reaction is very much more complex than that of arylation, for several reasons.
Alkylation - an overview | ScienceDirect Topics
Alkylation, in the context of the petroleum industry, refers to a process for the production of high-octane motor fuel components by the combination of olefins and paraffins. The reaction of iso-butane with olefins, using an aluminum chloride catalyst, is a typical alkylation reaction.
16.3 Alkylation and Acylation of Aromatic Rings: The …
Called the Friedel–Crafts reaction after its founders in 1877, Charles Friedel and James Crafts, the reaction is carried out by treating an aromatic compound with an alkyl chloride, RCl, in the presence of AlCl 3 to generate a carbocation electrophile, R +.