4-TERT-BUTYLPHENYLACETIC ACID Chemical Properties

Melting point:

77-78°C

Boiling point:

302.8±11.0 °C(Predicted)

Density 

1.047±0.06 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

solubility 

soluble in Methanol

form 

powder to crystal

pka

4.41±0.10(Predicted)

color 

White to Almost white

InChI

InChI=1S/C12H16O2/c1-12(2,3)10-6-4-9(5-7-10)8-11(13)14/h4-7H,8H2,1-3H3,(H,13,14)

InChIKey

RUAYXHSDAMWEDR-UHFFFAOYSA-N

SMILES

C1(CC(O)=O)=CC=C(C(C)(C)C)C=C1

CAS DataBase Reference

32857-63-9(CAS DataBase Reference)

EPA Substance Registry System

Benzeneacetic acid, 4-(1,1-dimethylethyl)- (32857-63-9)

Safety Information

Hazard Codes 

Xi,Xn

Risk Statements 

36/37/38-22

Safety Statements 

26-36/37/39

HazardClass 

IRRITANT

HS Code 

29163990

4-TERT-BUTYLPHENYLACETIC ACID Usage And Synthesis

Chemical Properties

Almost white crystalline powder

Synthesis

The general procedure for the synthesis of 4-tert-butylphenylacetic acid from methyl 4-tert-butylphenylacetate was as follows: 4-tert-butylphenylacetic acid methyl ester (4.13 g, 20 mmol) was dissolved in methanol (160 mL), and water (40 mL) and sodium hydroxide (1.2 g, 30 mmol) were added sequentially. The reaction mixture was stirred at room temperature overnight. Upon completion of the reaction, the volatile solvent was removed by distillation under reduced pressure, and the residue was diluted with water and acidified with 1 N sulfuric acid solution to pH 4. The precipitated solid was filtered, washed with water, and dried to afford 4-tert-butylphenylacetic acid as a white solid in 39% yield. The structure of the product was confirmed by 1H NMR (400 MHz, CDCl3) and 13C NMR (101 MHz, CDCl3): 1H NMR δ 1.32 (s, 9H), 3.60 (s, 2H), 7.22 (d, J = 8.2 Hz, 2H), 7.35 (d, J = 8.2 Hz, 2H), 8.48 (s, 1H) ppm; 13C NMR δ 31.49 (3C), 34.62, 40.84, 125.70 (2C), 129.16 (2C), 130.57, 150.29, 177.92 ppm.

References

[1] Tetrahedron Asymmetry, 2016, vol. 27, # 19, p. 936 - 942
[2] Bioorganic and Medicinal Chemistry Letters, 2004, vol. 14, # 9, p. 2047 - 2050
[3] Journal of Medicinal Chemistry, 2000, vol. 43, # 23, p. 4354 - 4358
[4] Patent: WO2004/69792, 2004, A2. Location in patent: Page 125
[5] Bioorganic and Medicinal Chemistry Letters, 2009, vol. 19, # 9, p. 2386 - 2391

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