Chemistry:2-Aminobenzaldehyde

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2-Aminobenzaldehyde
2-Aminobenzaldehyde.svg
Names
Preferred IUPAC name
2-Aminobenzaldehyde
Other names
ortho-Aminobenzaldehyde
2-Formylaniline
2-Aminobenzenecarbaldehyde
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 208-454-3
UNII
Properties
C7H7NO
Molar mass 121.139 g·mol−1
Appearance yellow solid
Melting point 32–34 °C (90–93 °F; 305–307 K)
good
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Tracking categories (test):

2-Aminobenzaldehyde is an organic compound with the formula C6H4(NH2)CHO. It is one of three isomers of aminobenzaldehyde. It is a low-melting yellow solid that is soluble in water.[1]

Preparation and reactions

It is usually prepared by reduction of 2-nitrobenzaldehyde with iron[2] or iron(II) sulfate.[3] Like related aminoaldehydes, it is unstable with respect to self-condensation.

2-Aminobenzaldehyde is used to prepare quinolines by the Friedländer synthesis:

The Friedländer synthesis

By template reactions, it also forms trimeric and tetrameric condensation products that have been studied as ligands.

Structure of nickel-aquo nitrate complex of the ligand derived from condensation of three equivalents of 2-aminobenzaldehyde.[4]

References

  1. Thummel, Randolph P. (2001). "2-Aminobenzaldehyde". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.ra088. ISBN 0471936235. 
  2. Chen Zhang; Chandra Kanta De; Daniel Seidel (2012). "o-Aminobenzaldehyde, Redox-Neutral Aminal Formation and Synthesis of Deoxyvasicinone". Org. Synth. 89: 274. doi:10.15227/orgsyn.089.0274. 
  3. Lee Irvin Smith; J. W. Opie (1948). "o-Aminobenzaldehyde". Org. Synth. 28: 11. doi:10.15227/orgsyn.028.0011. 
  4. Fleischer, E. B.; Klem, E. (1965). "The Structure of a Self-Condensation Product of o-Aminobenzaldehyde in the Presence of Nickel Ions". Inorganic Chemistry 4 (5): 637–642. doi:10.1021/ic50027a008.