| abstract |
(57) [Summary] [Objective] A biphenyl-4-carboxylic acid derivative is produced simply and inexpensively. [Structure] A coumarinic acid derivative (1) is reacted with a styrene compound (2) to produce a biphenyl-4-carboxylic acid derivative (3). [Chemical 1] (In the formula, R 1 represents a hydrogen atom or an alkyl group, and R 2 , R 3 and R 4 represent a halogen atom, a nitro group, a hydroxyl group, an alkyl group, an alkoxy group, an alkylcarbonyl group or an alkoxycarbonyl group) |