ChemicalBook CAS DataBase List 4-Pentylbenzoic acid

4-Pentylbenzoic acid synthesis

8synthesis methods

Product Name:4-Pentylbenzoic acid
CAS Number:26311-45-5
Molecular formula:C12H16O2
Molecular Weight:192.25

124-38-9
123 suppliers
$214.00/14L

121219-12-3
253 suppliers
$6.00/1g

26311-45-5
213 suppliers
$9.00/5g

Yield:26311-45-5 71%

Reaction Conditions:

with chloro[1,3-bis(2,6-di-i-propylphenyl)imidazol-2-ylidene]copper(I);potassium methanolate in tetrahydrofuran at 70; for 24 h;Schlenk technique;Sealed tube;

Steps:

26 Example 26

In the glove box, to a 50 mL Schlenk bottle with a stir bar was added 4-n-pentylphenylboronic acid (1 mmol, 192.1 mg), potassium methoxide (2 mmol, 2 equivalents, 140.2 mg), Cu(IPr)Cl (0.03 mmol, 0.03 equivalents, 14.6 mg), 5 mL of solvent tetrahydrofuran. remove the capped Schlenk bottle from the glove box, fully evacuate, fill the reaction system with carbon dioxide and seal it well, and then stir the reaction mixture at 70 °C. for 24 hours. After cooling to room temperature, it was acidified by adding 1 mol / L hydrochloric acid, and extracted with ethyl acetate, and washed once with brine. The organic phase was collected and concentrated in vacuo. The liquid mixture was dropped on a silica gel column and purified by column chromatography. As petroleum ether / ethyl acetate, the desired product 4-n-pentylbenzoic acid was obtained with a yield of 71%.

References:

CN110577457,2019,A Location in patent:Paragraph 0081; 0082

592-76-7 Synthesis