As constituents of volatile oils, these ketones play but a minor role. The following may here be mentioned.

o-Hydroxyacetophenone, CH3COC6H4OH, and possibly its methyl ether, are contained in the oil of Chione glabra. B. p. 160 to 165° (34 mm.). With ferric chloride it produces a deep red color, with bromine water a yellow crystalline precipitate. The oxime melts at 112°, the phenylhydrazone at 108°. When fused with potassa, salicylic acid (m. p. 155°) results.

Anise ketone (p-methoxyphenylacetone), CH3COCH2 •C6H4OCH3 possibly occurs in Russian anise oil and in bitter fennel oil. B. p. 263°; d0o1,095. The oxime melts at 72°.

1) Tiemann and Semmler, Berl. Berichte 26 (1893), 2723. 2) Berl. Berichte 32 (1899), 823.