ketone

[ kee-tohn ]

Phonetic (Standard)IPA

noun

, Chemistry.

any of a class of organic compounds containing a carbonyl group, CO, attached to two alkyl groups, as CH 3 COCH 3 or CH 3 COC 2 H 5 .

ketone

/ kɪˈtɒnɪk; ˈkiːtəʊn /

See acetone
any of a class of compounds with the general formula R′COR, where R and R′ are alkyl or aryl groups See also acetone

ketone

/ kē′tōn′ /

Any of a class of organic compounds having the general formula RCOR|||PRIMARY_STRESS|||, where R and R|||PRIMARY_STRESS||| are hydrocarbon radicals that are both attached to the carbon atom of the carbonyl (CO) group. Acetone is a ketone.

Origin of ketone¹

1850–55; < German Keton, aphetic alteration of Aceton acetone

Origin of ketone¹

C19: from German Keton, from Aketon acetone

It also acts as a chromogenic centre when double bonds or ethylenic linkages are present, as in fluorene ketone or fluorenone.

If the groups R and R′ are identical, the ketone is called a simple ketone, if unlike, a mixed ketone.

The hexoses all contain five alcoholic groups and one primary aldehyde, or one secondary aldehyde (ketone), group.

Even the common linseed contains a glucoside which breaks up into sugar, prussic acid, and a ketone.

Ionone, a ketone first prepared by Tiemann, and having when diluted a pronounced violet odour.

April 24, 2024gallimaufry

[gal-uh-maw-free ]

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