abstract |
Cyclohexadiene carboxylic acid derivs. of formula (Ia) or (Ib) and their salts are new: A = 6-10C aryl or pyridyl, opt. substd. by 1-3 of NO2, CN, halogen, 3-7C cycloalkyl, CF3, 1-6C alkylthio, 1-6C alkyl and 1-6C alkoxy; R1 = H or 1-8C alkyl; R2, R3 = , 1-6C alky lor 1-6C acyl; D = NO2 or 2-8C alkoxycarbonyl. |