Chemistry:1-Phenylethylamine

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1-Phenylethylamine
Chemical structure of 1-Phenylethylamine
Names
Preferred IUPAC name
1-Phenylethan-1-amine
Other names
  • (±)-1-Phenylethylamine
  • (±)-α-Methylbenzylamine
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
KEGG
UNII
Properties
C8H11N
Molar mass 121.183 g·mol−1
Density 0.94 g/mL
Boiling point 187 °C (369 °F; 460 K)
Hazards
Main hazards Corrosive
Related compounds
Related stereoisomers
(R)-(+)- (CAS [3886-69-9])
(S)-(−)- (CAS [2627-86-3])
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

1-Phenylethylamine is the organic compound with the formula C6H5CH(NH2)CH3. This primary amine is a colorless liquid is often used in chiral resolutions. Like benzylamine, it is relatively basic and forms stable ammonium salts and imines.

Preparation and optical resolution

1-Phenylethylamine may be prepared by the reductive amination of acetophenone:[1]

C
6
H
5
C(O)CH
3
+ NH
3
+ H
2
→ C
6
H
5
CH(NH
2
)CH
3
+ H
2
O

The Leuckart reaction, using ammonium formate, is another method for this transformation.[2]

L-malic acid is used to resolve 1-Phenylethylamine, a versatile resolving agent in its own right. The dextrorotatory enantiomer crystallizes with the malate, leaving the levorotatory form in solution.[3]

See also

  • 2-Phenylethylamine

References

  1. John C. Robinson, Jr. and H. R. Snyder (1943). "α-Phenylethylamine". Organic Syntheses 23: 68. doi:10.15227/orgsyn.023.0068. 
  2. Mann, F. G.; Saunders, B. C. (1960). Practical Organic Chemistry, 4th Ed.. London: Longman. pp. 223–224. ISBN 9780582444072. https://www.scribd.com/doc/46973684/Practical-Organic-Chemistry-Frederick-George-Mann. 
  3. A. W. Ingersoll (1937). "d- and l-α-Phenylethylamine". Organic Syntheses 17: 80. doi:10.15227/orgsyn.017.0080.