题目

47、受热发生脱羧反应的二元酸是 () .-|||-A. CH3 B. -C(H)_(2)-C(H)_(2)-COOH-|||-HOOC-CH-COOH-|||-HOOC COOH COOH-|||-C. >C=C D. COOH-|||-H H

题目解答

答案

】受热发生脱羧反应的二元酸是HOOC-CH-COOH,故选B。
B