Isobutylene glycol

Direct non-catalytic liquid-phase oxidation of isobutylene to isobutylene oxide gave low yield (28.7%) plus a variety of oxidation products such as acetone, ter-butyl alcohol, and isobutylene glycol ... [Pg.251]

Hydrolysis of isobutylene oxide in the presence of an acid produces isobutylene glycol ... [Pg.251]

Isobutylene glycol may also be produced by a direct catalyzed liquid phase oxidation of isobutylene with oxygen in presence of water. The catalyst is similar to the Wacker-catalyst system used for the oxidation... [Pg.251]

Liquid-phase oxidation of isobutylene glycol produces othydroxyisohu-tyric acid. The reaction conditions are 70-80°C at pH 2-7 in presence of... [Pg.252]

Similar behaviour is found with the analogous trichloromethyl compound but the hemiorthoester structure is less stable. The monotrifluoroacetates of isobutylene glycol and ethylene glycol exist wholly as esters and the cyclic hemiorthoesters cannot be detected. Compound [12] was reported to be formed when N,N-dimethyltrifluoroacetamide is added to a solution of potassium t-pentoxide in methylcyclohexane or isooctane (Fraenkel and Watson, 1975). [Pg.41]

Isobutylene Glycol and a-Hydroxybutyric Acid.37 To 16.3 g. of a-hydroxyisobutyraldehyde is added dropwise 40 cc. of 10% aqueous sodium hydroxide. The resulting solution is warmed on the water bath to complete the reaction, cooled, and extracted with ether. Bemoval of the ether leaves the glycol as a honey-colored oil which is purified by distillation (b.p. 177-179°). [Pg.111]

Kennedy prepared poly(isobutylene) glycol by the following scheme of reactions 44 51) ... [Pg.90]

Other functional groups may be present in the molecule containing the double bond. Methallyl alcohol, H2C = C(CHjX HjOH, is hydrated by a mixture of 25% sulfuric acid in the presence of isobutyraldehyde to give the cyclic acetal of isobutylene glycol with the aldehyde. Hydrolysis of the acetal by dilute mineral acid gives isobutylene glycol (94%). Hydration of the double bond by aqueous sulfuric acid has been used to make chloro-i-butyl alcohol from methallyl chloride and /S-hydroxybutyric acid from crotonic acid. ... [Pg.92]

In systems where the hydroxyl is on a secondary or tertiary carbon, neighboring hydroxyl participation can occur. For example, the acid hydrolysis of I-chloro-2-methyl-propan-2-ol gives isobutyraldehyde as well as isobutylene glycol (i8). [Pg.137]

Oxidation of isobutylene glycol Pt/C a-Hydroxybutyric acid, an intermediate Chemtech (1975)... [Pg.550]

See -Butylene Glycol and Isobutylene Glycol. Dimethylethylene oxide. [Pg.918]

Isobutylene Glycol (I 2 - Dihydroxyiso-butane, 1 1-dimethyleOiylene glycol)... [Pg.418]

B.p. 52°. DO 0-865. Heat above 210° + AI3O3 or PbClj —> isobutyraldehyde. With H3O + trace cone. HgSOg —> isobutylene glycol. With 33% NH3.Aq. — l-amino-2-methylpropanol-2. [Pg.418]

Isobutylene glycol and NaOH heated 3 hrs. at 250° in a shaker tube under... [Pg.433]

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