Acyl chlorides react with nitrosobenzene in 99.9% acetonitrile and in the presence of catalytic amounts of HCl giving the corresponding N-p-chlorophenylhydroxamic acids. The spectroscopic and kinetic evidence obtained indicates that the reaction is initiated by the formation of an N-chlorohydroxylamine intermediate from nitrosobenzene and hydrochloride in the first, slow step of the process. The nucleophilic
酰基
氯与
亚硝基苯反应在99.9%
乙腈和在催化量的HCl得到相应的存在Ñ - p -chlorophenylhydroxamic酸。所获得的光谱和动力学证据表明,在该方法的第一步缓慢步骤中,反应是由
亚硝基苯和盐酸盐形成N-
氯羟胺中间体引发的。亲核的N-
氯羟胺中间体与酰
氯(或可能的酰基阳离子-
氯离子对)反应,生成额外的酰基亚硝基中间体,该中间体在对位受到
氯离子的亲核攻击苯基部分的位置,并且从碳质子转移后,相应的Ñ - p形成-chlorophenylhydroxamic酸。