alpha-Bromoisobutyric Acid

Title: a-Bromoisobutyric Acid
CAS Registry Number: 2052-01-9
CAS Name: 2-Bromo-2-methylpropanoic acid
Molecular Formula: C4H7BrO2
Molecular Weight: 167.00
Percent Composition: C 28.77%, H 4.22%, Br 47.85%, O 19.16%
Line Formula: (CH3)2CBrCOOH
Literature References: Prepd by bromination of isobutyric acid: Markownikow, Ann. 153, 228 (1870); Smissman, J. Am. Chem. Soc. 76, 5805 (1954).
Properties: Crystals, mp 48-49°. bp 198-200°, bp20 110-116°. d 1.52. Sparingly sol in cold water; sol in alcohol, ether. Dec by hot water into the hydroxy acid.
Melting point: mp 48-49°
Boiling point: bp 198-200°; bp20 110-116°
Density: d 1.52
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