Sentence Examples


  • XANTHONE (dibenzo-y-pyrone, or diphenylene ketone oxide), C H 0 in organic chemistry, a heterocyclic compound containing the ring system shown below.
  • By the action of hydroxylamine or phenylhydrazine on aldehydes or ketones, condensation occurs between the carbonyl oxygen of the aldehyde or ketone and the amino group of the hydroxylamine or hydrazine.
  • Kane; methylethyl ketone and methyl-n-propyl ketone suffer similar condensations to s-triethylbenzene and s-tri-n-propylbenzene respectively.
  • Considerably greater than the alcohol group. The ketone group corresponds to a thermal effect of 53.52 calories.
  • It also acts as a chromogenic centre when double bonds or ethylenic linkages are present, as in fluorene ketone or fluorenone.
 

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