P-Coumaric acid CAS 501-98-4 Trans-4-Coumaric acid Herbal extract Food additive Pharmaceutical intermediate Antioxidant

Preparation

Synthesis of p-Coumaric acid: take o-acetylsalicyloyl chloride as raw material, in the presence of magnesium chloride, react with diethyl malonate in acetonitrile solvent, then add triethylamine, and react at 0°C for 1 h to obtain ( 2-acetoxybenzoyl) diethyl malonate product, then heated to 50°C in potassium hydroxide/methanol solution, reacted for 3h, and cyclized to obtain p-Coumaric acid.

Uses

Tans-p-Coumaric Acid is the E-isomer of p-Coumaric Acid (C755365), a hydroxy derivative of Cinnamic Acid with antioxidant properties. p-Coumaric acid is a is a major component of lignocellulose. Stud ies suggest that p-Coumaric Acid may reduce the risk of cancer by reducing the formation of carcinogenic nitrosamines.