WebAlkylphenols are a family of organic compounds obtained by the alkylation of phenols. The term is usually reserved for commercially important propylphenol, butylphenol, … Webtransformations. Examples include the direct allylic alkylation (20), the α-arylation (20, 25), α-enolation (26), α-vinylation (27), α-carbooxidation of alkenes (28), α-nitro alkylation en route to corresponding amino acids (29), as well as α-chlorination (30) (Scheme 4). Given the high synthetic utility of these enantioen-
Alkylation Definition & Meaning Dictionary.com
Webalkylation: [noun] the act or process of introducing one or more alkyl groups into a compound (as to increase octane number in a motor fuel). WebRSC ontology ID. RXNO:0000369. The Friedel–Crafts reactions are a set of reactions developed by Charles Friedel and James Crafts in 1877 to attach substituents to an aromatic ring. [1] Friedel–Crafts reactions are of two main types: alkylation reactions and acylation reactions. Both proceed by electrophilic aromatic substitution. camping chair for baby
5.1 Petroleum Refining1 - US EPA
WebAlkylation and dealkylation reactions are characteristics especially for poly[alkylalkylene (arylene) phosphate]s in which the alkyl radical in the side chain is methyl or ethyl (Scheme 2.32).In these reactions, the α-carbon atom of the side alkoxy group plays the role of the electrophilic center. Nucleophiles such as the amino group and chlorine anion prefer to … 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). Alkylating agents are reagents for effecting alkylation. Alkyl groups can also be removed in a process known as … See more Nucleophilic alkylating agents deliver the equivalent of an alkyl anion (carbanion). The formal "alkyl anion" attacks an electrophile, forming a new covalent bond between the alkyl group and the electrophile. The … See more Alkylation in biology causes DNA damage. It is the transfer of alkyl groups to the nitrogenous bases. It is caused by alkylating agents such as EMS (Ethyl Methyl Sulphonate). Bifunctional alkyl groups which have two alkyl groups in them cause cross … See more Several commodity chemicals are produced by alkylation. Included are several fundamental benzene-based feedstocks such as ethylbenzene (precursor to See more Complementing alkylation reactions are the reverse, dealkylations. Prevalent are ether dealkylations. See more C-alkylation C-alkylation is a process for the formation of carbon-carbon bonds. The largest example of this takes place in the alkylation units of petrochemical plants, which convert low-molecular-weight alkenes into … See more In a conventional oil refinery, isobutane is alkylated with low-molecular-weight alkenes (primarily a mixture of propene and butene) in the presence of a Brønsted acid catalyst, which can … See more • Hydrodealkylation • Transalkylation • Alkynylation • Friedel–Crafts reaction • Category:Alkylating agents See more Webal·kyl·a·tion. Substitution of an alkyl radical for a hydrogen atom; for example, introduction of a side chain into an aromatic compound. first wave credit union