trans-Cinnamic acid

• Catalog No.: A13538
• CAS Number: 140-10-3
• M. F.: C9H8O2
• M. W.: 148.15862
• Purity: 99+%

SYNONYMS

• Title: 反-肉桂酸
• IUPAC name: (2E)-3-phenylprop-2-enoic acid
• IUPAC Traditional name: cinnamic acid
• Synonyms: trans-3-Phenylacrylic acid

DATABASE IDS

• CAS Number: 140-10-3
• EC Number: 205-398-1
• Merck Index: 142299
• Beilstein Number: 1905952
• MDL Number: MFCD00004369

PROPERTIES

• Purity: 99+%
• Boiling Point: 147°C/4mm
• Density: 1.250
• Flash Point: 166°C(330°F)
• Melting Point: 133-136°C
• GHS Hazard statements: H319-H303
• European Hazard Symbols: Irritant (Xi)
• GHS Precautionary statements: P305+P351+P338
• Risk Statements: 36
• RTECS: GD7850000
• Safety Statements: 26
• TSCA Listed: 是

REFERENCES

• Heating with excess thionyl chloride and a catalytic amount of pyridine gives a benzo[b]thiophene derivative, formed by electrophilic addition of thionyl chloride across the double bond of cinnamoyl chloride, Pummerer rearrangement of the resulting sulfinyl chloride and final cyclization. ɑ-Chlorocinnamoyl chloride is formed as a by-product by elimination of SCl₂: J. Org. Chem., 40, 3037 (1975):
  
• Under similar conditions, 3-phenylpropionic acid gave the same products in lower yield; the reaction was thought to occur via an initial ɑ-enolization of the acid chloride: Tetrahedron Lett., 5149 (1968).