7511. Pivalic Acid
Nomenclature
CAS number: 75-98-9
2,2-Dimethylpropanoic acid; α,α-dimethylpropionic acid; trimethylacetic acid; tert-pentanoic acid. C5H10O2; mol wt 102.13.
C 58.80%, H 9.87%, O 31.33%.
Description and references
Prepd by the reaction of tert-butylmagnesium chloride and carbon dioxide: Bouveault, Compt. Rend. 138, 1108 (1904); Puntambeker, Zoellner, Org. Synth. 8, 104 (1928); other methods: ibid. 108. Forms higher esters (e.g., isobutyl ester) only with difficulty.
Properties
Needles, mp 35.5°. bp760 163.8°; d50 0.905; nD36.5 1.3931. pKa (25°): 5.01. One gram dissolves in 40 ml water. Freely sol in alcohol, ether.Derivative
Ethyl ester.Nomenclature
CAS number: 3938-95-2
C7H14O2; mol wt 130.18.
C 64.58%, H 10.84%, O 24.58%.