Kinetic evidence has been obtained from the hydrolysis of the title compounds that is consistent with a dissociative mechanism; ionization of the substrate is followed by the slow unimolecular breakdown of the conjugate base to phenoxide ion and sulphene, but at hight pH values a further ionizatio occurs to give a dicarbanion which undergoes E1-elimination of phenolate ion to yield a sulphene anion
从标题化合物的
水解中获得了与解离机理相符的动力学证据。底物电离后,共轭碱缓慢单分子分解为
酚盐离子和亚砜,但在较高的pH值下,进一步电离产生二碳双阴离子,该二碳双阴离子经过E 1消除
酚酸根离子,从而在
苯酚中生成亚砜阴离子。速率确定步骤。