Unusually lowered acidity of ammonium group surrounded by crown ether in a rotaxane system and its acylative neutralization

被引：87

作者：

Kihara, N ^{[1
]}

Tachibana, Y ^{[1
]}

Kawasaki, H ^{[1
]}

Takata, T ^{[1
]}

机构：

[1] Univ Osaka Prefecture, Grad Sch Engn, Dept Appl Chem, Sakai, Osaka 5998531, Japan

来源：

CHEMISTRY LETTERS | 2000年 / 05期

关键词：

D O I：

10.1246/cl.2000.506

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Acidity of a secondary ammonium group in a rotaxane system with a crown ether was unusually lowered. N-Acylation of the ammonium group by acid anhydrides or chlorides proceeded slowly in the presence of excess tertiary amine to give the N-acylated rotaxanes without salt structure.

引用

页码：506 / 507

页数：2

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