Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Vinylacetio acid

Vinylacetio acid is available from Toltyokasei Company, Ltd., Japan or from Fluka AG, Buchs, Switzerland. Commercial material, which shows about 3% of crotonic acid [2-Butenoic acid, (A)-] in its proton magnetic resonance spectrum, was distilled at 90-92° (40-43 mm.) prior to use. [Pg.50]

Crotonic acid is an example of an a(S-unsaturated acid, whilst vinylacetio acid is a (3y-unsaturated acid. Upon heating the latter with a solution of an alkali hydroxide at 100° or with sulphuric acid, it passes almost completely into the forrper. Actually an equilibrium mixture is produced containing 98 per cent, of crotonic acid ... [Pg.464]

Kon, 109 Perkin, 108 n-Valeraldehyde, 322 n-Valeric acid, 354, 355,357,359,487 iso-Valeric acid, 354, 355 n-Valeronitrile, 408 Vanadium pentoxide catalyst, 463 Vapour pressure, 1, 2 of mixtures, 6-11 Veratraldehyde, 803, 804 Veratronitrile, 803, 804 Veronal, 1002, 1003 Vibro mixer, 65 Vinylacetio acid, 463, 465... [Pg.1188]

A simple application of the reaction may be mentioned. Refluxing of (I) with 48 per cent, hydrobromic acid and glacial acetic acid leads to hydrolysis and decarboxylation and the production of a mixture of the y-lactone rT di-phenylbutyrolactone (II) and the isomeric unsaturated acid nr-diphenyl-vinylacetio acid (HI) reduction by the Oemmensen method or catalytically... [Pg.919]


See also in sourсe #XX -- [ Pg.463 , Pg.465 ]

See also in sourсe #XX -- [ Pg.463 , Pg.465 ]

See also in sourсe #XX -- [ Pg.463 , Pg.465 ]




SEARCH



© 2024 chempedia.info