Acetone azine

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Acetone azine
IUPAC name acetone azine
diisopropylidenehydrazine
Identifiers
InChI InChI=1/C6H12N2/c1-5(2)7-8-6(3)4/h1-4H3
InChIKey PFLUPZGCTVGDLV-UHFFFAOYAR
Standard InChI InChI=1S/C6H12N2/c1-5(2)7-8-6(3)4/h1-4H3
Standard InChIKey PFLUPZGCTVGDLV-UHFFFAOYSA-N
CAS number [627-70-3]
EC number 211-009-6
ChemSpider 71417
SMILES
Properties[1]
Chemical formula C6H12N2
Molar mass 112.17 g mol−1
Appearance colourless liquid
Density 0.8390 g cm−3
Melting point

−12.5 °C

Boiling point

133 °C

Refractive index (nD) 1.4535
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Acetone azine, Me2C=N–N=CMe2, is the condensation product of two equivalents of acetone with one equivalent of hydrazine. It is an intermediate in the industrial production of hydrazine by the Atofina–PCUK cycle.[2]

On a laboratory scale, acetone azine is prepared by the direct reaction of acetone with hydrazine hydrate, with water being removed from the product by stirring with solid potassium hydroxide:[3][4] it is also commercially available. It is a useful precursor to acetone hydrazone[4][5] and hence to 2-diazopropane,[5][6][7] both of which must be prepared immediately before use and cannot be stored.[4][7]

References

  1. CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p C-74. ISBN 0-8493-0462-8.
  2. Schirmann, Jean-Pierre; Combroux, Jean; Delavarenne, Serge Yvon (Produits Chimiques Ugine Kuhlmann) Method for preparing azines and hydrazones. US Patent 3972878, issued 3 August 1976. Schirmann, Jean-Pierre; Tellier, Pierre; Mathais, Henri, et al. (Produits Chimiques Ugine Kuhlmann) Process for the preparation of hydrazine compounds. US Patent 3978049, issued 31 August 1976.
  3. Curtius, T.; Thun, K. J. Prakt. Chem. 1891, 44, 161.
  4. 4.0 4.1 4.2 Day, A. C.; Whiting, M. C. Acetone hydrazone. Org. Synth. 1970, 50, 3, <http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=cv6p0010>; Coll. Vol., 6, 10.
  5. 5.0 5.1 Staudinger, H.; Gaule, A. Ber. Dtsch. Chem. Ges. 1916, 49, 1897.
  6. Day, A. C.; Raymond, P.; Southam, R. M.; Whiting, M. C. J. Chem. Soc. C 1966, 467.
  7. 7.0 7.1 Andrews, S. D.; Day, A. C.; Raymond, P.; Whiting, M. C. 2-Diazopropane. Org. Synth. 1970, 50, 27, <http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=cv6p0392>; Coll. Vol., 6, 392.
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