white to beige crystalline powder
4-(Bromomethyl)benzoic acid was used in the chemical modification of 5,10,15,20-tetra(m-hydroxyphenyl)chlorin (temoporfin), second generation photosensitizer. It was also used in the synthesis of 4-(5-arylidene-2,4-dioxothiazolidin-3-yl) methylbenzoic acids.
4-(Bromomethyl)benzoic acid acts as an intermediate in the synthesis of eprosartan, which is used as an antihypertensive agent. Further, it is used in the preparation of 5,10,15,20-tetra(m-hydroxyphenyl)chlorin (temoporfin), which is a second generation photosensitizer. In addition to this, it is used in the preparation of 4-(5-arylidene-2,4-dioxothiazolidin-3-yl) methylbenzoic acids.
4-(Bromomethyl)benzoic Acid is an intermediate in the synthesis of Eprosartan (E590100), a prototype of the imidazoleacrylic acid angiotensin II receptor antagonists used as an antihypertensive agent.
In a 100 mL round-bottomed flask, 40 mL of carbon tetrachloride was added as solvent, 3.00 g of p-methylbenzoic acid as starting material, 4.00 g of N-bromosuccinimide (NBS) as bromination reagent, and 0.1 g of azobisisobutyronitrile (AIBN) as initiator. The reaction mixture was stirred and refluxed at 90 °C and the reaction process was monitored by thin layer chromatography (TLC). Upon completion of the reaction, the mixture was cooled to room temperature followed by filtration. The filter cake was washed with warm water to remove the succinimide by-products generated in the reaction. After drying, 4.02 g of p-bromomethylbenzoic acid was obtained with a melting point of 231-232°C in 84% yield.
Crystallise the acid from pKEst Me2CO. [Beilstein 9 IV 1745.]
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