decreasing extent of nucleophilic solvent participation was found in the solvolysis of 2 and 4. 2-Naphthoyl chloride is likely to have a mechanism at the borderline of SN1-like dissociation and an addition–elimination process. 6-Methoxy-2-naphthoyl chloride shows more SN1-like character than 3 and is associated with nucleophilic solvent intervention more pronounced than that for 2 and 4. The applicability
研究了1-
萘甲酰基(2),2-
萘甲酰基(3),
4-甲基-1-萘甲酰基(4)和6-甲氧基-2-
萘甲酰基(5)
氯化物在各种溶剂中的溶剂解,并进行了相关分析通过使用单参数和双参数Grunwald-Winstein方程进行了检验。观察到4的极好的线性关系(R = 0.995),log(k / k 0)= 0.733 Y xBnCl + 0.269 N OTs。一个小号Ñ 1状随亲核溶剂参与的程度机制中的溶剂分解,发现2和4。
2-萘甲酰氯可能在S N 1样解离和加成-消除过程的边界处具有某种机制。6-甲氧基-
2-萘甲酰氯显示出比S 3更像S N 1的特征,并且与亲核溶剂干预有关,比对2和4更为明显。讨论了使用Y xBnCl标尺在不同类型的基材上的适用性和优点。版权所有©2002 John Wiley&Sons,Ltd.