6-Methyl-3,5-heptadien-2-one has a cinnamon-like odor with a
coconut undertone. May be prepared by reacting 2-methylbuten-
2-al with acetone in the presence of sodium ethylate or sodium
hydroxide; by pyrolysis of tertiary actylenic carbinyl acetoacetates
in the presence of an acid catalyst.
Clear colorless to light yellow liquid
6-Methyl-3,5-heptadine-2-one has a cinnamon-like odor with a coconut undertone
Reported as occurring in the oil of lavandin, grapes, tomato and tomato paste, green tea, filberts, cooked rice
and rice bran, licorice, corn oil and lemon balm
6-Methyl-3,5-heptadien-2-one is used in the preparation of (RS)-(E)-2,6-dimethyl-1,2-epoxy-3,5-heptadiene.
By reacting 2-methylbuten-2-al with acetone in the presence of sodium ethylate or sodium hydroxide; by pyrolysis of
tertiary acetylenic carbinyl acetoacetates in the presence of an acid catalyst.
Taste characteristics at 30 ppm: green and sweet with a brown, herbal aftertaste.
