8140. Resacetophenone

Nomenclature

CAS number: 89-84-9
1-(2,4-Dihydroxyphenyl)ethanone; 2′,4′-dihydroxyacetophenone.
C8H8O3; mol wt 152.15.
C 63.15%, H 5.30%, O 31.55%.

Description and references

Made by heating resorcinol, glacial acetic acid, and anhydr zinc chloride at 145-150°: Cooper, Org. Synth. 21, 103 (1941); from resorcinol, acetic anhydride and boron trifluoride: Killelea, Lindwall, J. Am. Chem. Soc. 70, 428 (1948).

Chemical structure

Properties

Needles or leaflets, mp 145-147°. Gradually dec by water; sol in pyridine, in warm alcohol, in glacial acetic acid; practically insol in benzene, ether, chloroform.

Use

Reagent for iron as a 10% alcoholic soln. A red color is obtained with ferric ions in slightly acid soln: Cooper, Ind. Eng. Chem. Anal. Ed. 9, 334 (1937).