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'''2-Nitrocinnamaldehyde''', '''''ortho''-nitrocinnamaldehyde''' or '''''o''-nitrocinnamaldehyde''' is an organic ] compound containing a ] ] ortho- to the 1-position of ]. '''2-Nitrocinnamaldehyde''', '''''ortho''-nitrocinnamaldehyde''' or '''''o''-nitrocinnamaldehyde''' is an organic ] compound containing a ] ] ortho- to the 1-position of ].


==Synthesis== ==Synthesis==

Revision as of 17:37, 25 January 2012

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2-Nitrocinnamaldehyde
Names
IUPAC name (E)-3-(2-Nitrophenyl)prop-2-enal
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
PubChem CID
InChI
  • InChI=1S/C9H7NO3/c11-7-3-5-8-4-1-2-6-9(8)10(12)13/h1-7H/b5-3+Key: VMSMELHEXDVEDE-HWKANZROSA-N
  • InChI=1/C9H7NO3/c11-7-3-5-8-4-1-2-6-9(8)10(12)13/h1-7H/b5-3+Key: VMSMELHEXDVEDE-HWKANZROBN
SMILES
  • O=()c1ccccc1\C=C\C=O
Properties
Chemical formula C9H7O3N
Appearance Pale yellow crystalline powder
Melting point 124–126 °C
Solubility in water Slightly soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

2-Nitrocinnamaldehyde, ortho-nitrocinnamaldehyde or o-nitrocinnamaldehyde is an organic aromatic compound containing a nitro group ortho- to the 1-position of cinnamaldehyde.

Synthesis

2-Nitrocinnamaldehyde can be synthesized by dissolving cinnamaldehyde to a solution of acetic anhydride in acetic acid, and adding a stoichiometric amount of concentrated nitric acid at 0–5 °C. Yields are around 36-46% of theoretical.

Nitration of cinnamaldehyde via acidification of a nitrate salt with H2SO4 also yields the ortho-nitro compound, however it also yields some of the para-nitro compound, which is generally undesired.

2-Nitrocinnamaldehyde can also be prepared by reacting 2-nitrobenzaldehyde with acetaldehyde in a condensation reaction.

Uses

2-Nitrocinnamaldehyde can be oxidized to 2-nitrocinnamic acid which can be used in the Baeyer-Emmerling indole synthesis to produce indole and substituted indoles.

References

  1. http://www.21cnlab.com/chemdict/MSDS/62967.html 2-Nitrocinnamaldehyde MSDS
  2. http://www.orgsyn.org/orgsyn/prep.asp?rxntypeid=181&prep=CV4P0722
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