Participation of neighbouring amide group in the competitive acid catalysed hydrolysis of ether linkage and an intramolecular S(N)2 reactions .2.

被引:10
作者
Arcelli, A [1 ]
Papa, M [1 ]
Porzi, G [1 ]
Sandri, S [1 ]
机构
[1] DIPARTIMENTO CHIM G CIAMICIAN,I-40126 BOLOGNA,ITALY
关键词
D O I
10.1016/S0040-4020(97)00662-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The substrate 1 was submitted to acid hydrolysis and two reaction products (2,3) were obtained in competitive reactions (a parallel pathway). The experimental data, elaborated by using the expressions for the parallel first-order reactions, showed the formation of 3 (an intramolecular cyclization) about three-fold slower than 2 (the previously observed hydrolytic cleavage of ether linkage). Both the reactions appear to be assisted by the protonated neighbouring amide group. (C) 1997 Elsevier Science Ltd.
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收藏
页码:10513 / 10516
页数:4
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