1080. Benzilic Acid
Nomenclature
CAS number: 76-93-7
α-Hydroxy-α-phenylbenzeneacetic acid; diphenylglycolic acid. C14H12O3; mol wt 228.24.
C 73.67%, H 5.30%, O 21.03%.
Description and references
Prepd from benzil by the action of concd aq or alc KOH: Adams, Marvel, Org. Synth. vol. 1, p 29 (1921); Ballard, Dehn, ibid. coll. vol. I, 82; Kao, Ma, J. Chem. Soc. 1931, 443.
Properties
Monoclinic needles from water. Bitter taste. mp 150°. Melt is deep red at higher temp. pKa (25°): 3.036. Slightly sol in cold water; freely sol in hot water, alc, ether.Derivative
Potassium salt.C14H11O3K; mol wt 266.33.
C 63.14%, H 4.16%, O 18.02%, K 14.68%.
Properties
Crystals, very sol in water, alc.Derivative
Lead salt.(C14H11O3)2Pb; mol wt 661.67.
C 50.83%, H 3.35%, O 14.51%, Pb 31.31%.
Properties
Amorphous precipitate. Upon heating it becomes a red liquid.Derivative
Methyl ester.C15H14O3; mol wt 242.27.
C 74.36%, H 5.82%, O 19.81%.