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Acetonitriles Vilsmeier-Haack reaction

Scheme 11.5 gives some examples of these acylation reactions. Entry 1 is an example of a chloromethylation reaction. Entry 2 is a formylation using carbon monoxide. Entry 3 is an example of formylation via to-chloromethyl ether. A cautionary note on this procedure is the potent carcinogenicity of this reagent. Entries 4 and 5 are examples of formylation and acetylation, using HCN and acetonitrile, respectively. Entries 6 to 8 are examples of Vilsmeier-Haack reactions, all of which are conducted on strongly activated aromatics. [Pg.1024]

An efficient synthesis of 2,4-dihydroxybenzaldehyde 1775 from resorcinol 1773 by a Vilsmeier-Haack reaction using either phosphorus oxychloride/DMF or oxalyl chloride/DMF, working below room temperature in acetonitrile, has been reported [1301]. [Pg.456]

See other pages where Acetonitriles Vilsmeier-Haack reaction is mentioned: [Pg.270]   
See also in sourсe #XX -- [ Pg.2 , Pg.789 ]

See also in sourсe #XX -- [ Pg.789 ]

See also in sourсe #XX -- [ Pg.789 ]

See also in sourсe #XX -- [ Pg.2 , Pg.789 ]

See also in sourсe #XX -- [ Pg.789 ]



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