Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. any compound, of general formula R2C=NNR2, formally derived from an aldehyde or ketone by replacing the carbonyl group with =NNH2 or derivative

from The Century Dictionary and Cyclopedia

  • n. The name of a class of organic compounds with the group R′ CH:NNHR or R′ R″C:N.NHR, formed by the action of a hydrazine on a compound containing a carbonyl group, water being eliminated.

Etymologies

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Examples

  • The numbers approximate closely to those obtained by the hydrazone method.

    Researches on Cellulose 1895-1900

  • Furfural from cellulose, oxycellulose, and hydrocellulose, 70; derivative from lævulose, 8; estimation as hydrazone and phloroglucide, 119, 121; oxidation of, 114, 118 (_refer also_ 'Pentosanes')

    Researches on Cellulose 1895-1900

  • Treated with caustic soda solution the hydrazones were dissolved in part: on reprecipitation a hydrazone of unaltered composition was obtained.

    Researches on Cellulose 1895-1900

  • The main product is a hydroxyfurfural, which was separated as a hydrazone.

    Researches on Cellulose 1895-1900

  • In (a) by varying the weights of known quantities of furfural, and using the factor, hydrazone × 0.516 [+ 0.0104] in calculating from the weights of precipitates obtained, the maximum variations from the theoretical number were +1.71 and - 1.74.

    Researches on Cellulose 1895-1900

  • A comparative investigation was made, precipitating furfural (a) as hydrazone in presence of acetic acid, and (b) as phloroglucide in presence of HCl

    Researches on Cellulose 1895-1900

  • Covalent hydrazone bonds were stabilized by reduction with NaCNBH

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  • C_ {36} H_ {60} O_ {31} and 6 C_ {24} H_ {49} O_ {21} respectively, assuming the reaction to be a hydrazone reaction.

    Researches on Cellulose 1895-1900

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