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2-Nitrocinnamaldehyde

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2-Nitrocinnamaldehyde
Names
Preferred IUPAC name (2E)-3-(2-Nitrophenyl)prop-2-enal
Identifiers
CAS Number
3D model (JSmol)
ChEMBL
ChemSpider
EC Number
  • 215-988-0
PubChem CID
UNII
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 to 126 °C (255 to 259 °F; 397 to 399 K)
Solubility in water Slightly soluble
Hazards
GHS labelling:
Pictograms GHS07: Exclamation mark
Signal word Warning
Hazard statements H315, H319, H335
Precautionary statements P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
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. "Organic Syntheses".
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