tert-butyl 4-hydroxybenzoate

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tert-butyl 4-hydroxybenzoate manufacturers

tert-butyl 4-hydroxybenzoate Basic information
Uses
Product Name:tert-butyl 4-hydroxybenzoate
Synonyms:tert-butyl 4-hydroxybenzoate;4-Hydroxybenzoic acid 1,1-dimethylethyl ester;Benzoic acid, 4-hydroxy-, 1,1-diMethylethyl ester;4-Hydroxy-benzoic acid tert-butyl ester;p-Hydroxybenzoic acid tert-butyl ester;tert-Butyl p-hydroxybenzoate;1,1-Dimethylethyl 4-hydroxybenzoate
CAS:25804-49-3
MF:C11H14O3
MW:194.23
EINECS:247-272-9
Product Categories:
Mol File:25804-49-3.mol
tert-butyl 4-hydroxybenzoate Structure
tert-butyl 4-hydroxybenzoate Chemical Properties
Melting point 130-132 °C(Solv: ethyl ether (60-29-7); ligroine (8032-32-4))
Boiling point 295.6±13.0 °C(Predicted)
density 1.107±0.06 g/cm3(Predicted)
storage temp. 2-8°C
form solid
pka8.25±0.15(Predicted)
color White
Safety Information
HS Code 2918290090
MSDS Information
tert-butyl 4-hydroxybenzoate Usage And Synthesis
Uses4-Hydroxybenzoate tert-butyl ester is used in organic synthesis, biochemical research, etc.
Synthesis
tert-Butanol

75-65-0

4-Hydroxybenzoic acid

99-96-7

tert-butyl 4-hydroxybenzoate

25804-49-3

Using p-hydroxybenzoic acid (1.50 g, 10.86 mmol) and tert-butanol (13.34 g, 18 mmol) as raw materials, DCC (2.5 g, 12.00 mmol) was dissolved in DCM (40 mL) catalyzed by DBU (0.19 mL, 1.20 mmol), and the reaction mixture was stirred vigorously for 18 hours at room temperature. After completion of the reaction, the solvent was evaporated to dryness and the residue was dissolved in DCM (50 mL) and filtered to remove insoluble material. The filtrate was washed sequentially with saturated NaHCO3 solution (50 mL), K2CO3 solution (2 x 50 mL) and saturated NaCl solution (50 mL). The organic phase was dried with MgSO4, filtered and the solvent was evaporated to give the crude product. The crude product was purified by column chromatography (EtOAc:hexane gradient elution) to afford tert-butyl 4-hydroxybenzoate (SO2-059) (31) as a white crystalline solid (1.1 g, 55% yield).1H NMR (400 MHz, CDCl3) δ 7.89 (d, J = 8.8 Hz, 1H), 6.84 (d, J = 8.9 Hz, 1H) 5.29 (s, 1H), 1.57 (s, 9H).

References[1] Journal of Materials Chemistry, 2007, vol. 17, # 48, p. 5097 - 5110
[2] Synthesis, 2003, # 16, p. 2479 - 2482
[3] European Journal of Medicinal Chemistry, 2015, vol. 101, p. 716 - 735
[4] Bioorganic and Medicinal Chemistry Letters, 2004, vol. 14, # 14, p. 3645 - 3649
[5] Journal of Medicinal Chemistry, 2013, vol. 56, # 10, p. 3783 - 3805
tert-butyl 4-hydroxybenzoate Preparation Products And Raw materials
Raw materialsN,N-Dimethylformamide di-tert-butyl acetal-->Isobutylene-->tert-Butanol-->4-Hydroxybenzoic acid-->Dicyclohexylcarbodiimide-->DBU-->Dichloromethane
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