Acid anhydrides acylation

Friedel-Crafts acylation of aromatic compounds (Section 12 7) Acyl chlorides and carboxylic acid anhydrides acylate aromatic rings in the presence of alumi num chloride The reaction is electrophil ic aromatic substitution in which acylium ions are generated and attack the ring... [Pg.710]

Friedel-Crafts acylation In the presence of aluminum chloride, acyl chlorides and carboxylic acid anhydrides acylate the aromatic ring of phenols. [Pg.1004]

Similar additions have been successfully carried out with carboxylic acids, anhydrides, acyl halides, carboxylic esters, nitriles, and other types of compounds. These reactions are not successful when the alkene contains electron-withdrawing groups such as halo or carbonyl groups. A free-radical initiator is required, usually peroxides or UV light. The mechanism is illustrated for aldehydes but is similar for the other compounds ... [Pg.1034]

See related ACID ANHYDRIDES, ACYL NITRATES, PEROXYESTERS... [Pg.427]

ACID ANHYDRIDES, ACYL HALIDES, ALKALI METALS ALKYLALUMINIUM DERIVATIVES, ALKYLNON-METAL HALIDES COMPLEX HYDRIDES, METAL HALIDES, METAL HYDRIDES METAL OXIDES, NON-METAL HALIDES (AND THEIR OXIDES)... [Pg.417]

The classes of compounds which are conveniently considered together as derivatives of carboxylic acids include the carboxylic acid anhydrides, acyl chlorides, esters, and amides. In the case of simple aliphatic and aromatic acids, synthetic transformations among these derivatives are usually a straightforward matter involving such fundamental reactions as ester saponification, formation of acyl chlorides, and the reactions of amines with acid anhydrides or acyl chlorides ... [Pg.164]

Serine Carboxylic acids, acyl hahdes, sulfonyl halides, acid anhydride Acylation... [Pg.275]

ACID ANHYDRIDES ACYL HALIDES ALKALI METALS... [Pg.2619]

Acid anhydrides Acyl halides Alkali metals... [Pg.575]

Similar additions have been successfully carried out with carboxylic acids, anhydrides,acyl halides, carboxylic esters, nitriles, and other types of compounds. [Pg.1135]

The first step in the Polonovski reaction of an amine N-oxide with an acid anhydride, acyl chloride or chloroformate ester is the formation of the 0-acylimonium salt (1 Scheme 1). Such species are highly unstable. However, they can be detected in situ ( H NMR), and in certain cases actually isolated, if prepared using powerful acylating agents such as acetyl perchlorate. [Pg.911]

Like the lower homologues, it is extremely explosive [1], and may only be handled in high dilution with air or nitrogen. Higher homologues are less explosive [2], See related ACID ANHYDRIDES, ACYL NITRATES, PEROXYESTERS... [Pg.420]

Esters Carboxylic acids Nitriles Ketones Amides Esters Nitriles Acyl chlorides Acid anhydrides Acyl cyanides Carbon dioxide Alkyl dialkoxyphosphinyl formate A l imidazoles Thiol esters Thio esters... [Pg.797]

Acid anhydride Acyl phosphate II II 0 0 0 II w/ r p -oic anhydride -yl phosphate Lactam (cyclic amide) O II w None... [Pg.556]