ChemicalBook CAS DataBase List 4-(TERT-BUTOXYCARBONYL)BENZOIC ACID

4-(TERT-BUTOXYCARBONYL)BENZOIC ACID synthesis

6synthesis methods

Product Name:4-(TERT-BUTOXYCARBONYL)BENZOIC ACID
CAS Number:20576-82-3
Molecular formula:C12H14O4
Molecular Weight:222.24

1,4-Benzenedicarboxylicacid, 1,4-bis(1,1-dimethylethyl) ester

28313-42-0

20576-82-3

The general procedure for the synthesis of 4-(tert-butoxycarbonyl)benzoic acid from di-tert-butyl terephthalate was as follows: 6.1 g (0.022 mol) of di-tert-butyl terephthalate was suspended in 30 mL of tert-butanol, and 22 mL (0.022 mol) of 1N KOH solution was slowly added. The reaction mixture was heated to 60°C and maintained at this temperature for 7-8 hours. After completion of the reaction, the mixture was cooled, diluted with water and extracted three times with ethyl acetate. After combining the organic phases, the aqueous phase was acidified to acidity with dilute hydrochloric acid and the product was again extracted with ethyl acetate. All ethyl acetate extracts were combined, washed with saturated aqueous sodium chloride solution and dried over anhydrous magnesium sulfate. The desiccant was removed by filtration, and the filtrate was concentrated under reduced pressure to give 4-(tert-butoxycarbonyl)benzoic acid (mono-tert-butyl terephthalate) as a white solid with a yield of 4.7 g, 96% yield, and a melting point of 100-102°C. The product was extracted with dilute hydrochloric acid.

619-66-9 Synthesis

619-66-9
440 suppliers
$5.00/5g

20576-82-3
117 suppliers
$11.00/100mg

Yield:-

Steps:

Multi-step reaction with 2 steps
1: 64 percent / benzene / 0.5 h / Heating
2: 84 percent / CrO₃; aq.H₂SO₄ / acetone / cooling

References:

Adlington;Baldwin;Becker;Chen;Cheng;Cooper;Hermann;Howe;McCoull;McNulty;Neubauer;Pritchard [Journal of Medicinal Chemistry,2001,vol. 44,# 10,p. 1491 - 1508]

28313-42-0 Synthesis

28313-42-0
25 suppliers
$284.04/250mg

20576-82-3
117 suppliers
$11.00/100mg

References

100-21-0 Synthesis