Question

@—CH—COOH | CH3与 @—CH—COOH 互为同分异构体,结构中含有苯环且苯环上含有一个甲基,| 苯环上的取

Answer 1

CH3-C6H4-O-CO-CH3

CH3-C6H4-CH2-O-CO-H

CH3-C6H4-CO-O-CH3

CH3-CH2-C6H4-O-OC-H