A reverse donor-acceptor bistable [2]Catenane

被引：48

作者：

Coskun, Ali ^{[1
,2
,3
]}

Saha, Sourav ^{[1
,2
]}

Aprahamian, Ivan ^{[1
,2
]}

Stoddart, J. Fraser ^{[1
,2
,3
]}

机构：

[1] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

ORGANIC LETTERS | 2008年 / 10卷 / 15期

关键词：

D O I：

10.1021/ol800931z

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A [2]catenane, composed of a pi-electron-rich bis-1,5-dioxynaphthalene[38]crown10 (BDNP38C10) ring, mechanically interlocked with a large macrocycle containing two disubstituted tetraarylmethane "speed bumps" and two different pi-electron-deficient units-namely, naphthalene dimide (Npl) and bipyridinium (Blpy(2+)) units-has been synthesized from a [2]rotaxane, containing the former recognition unit, after performing two sequential Cu(l)-catalyzed azide-alkyne cycloadditions with a linker containing the latter recognition unit. The product, which exists as a single co-conformer, wherein the BDNP38C10 ring encircles the Npl unit, undergoes equilibration to give approximately equal amounts of the other co-conformer in which the BDNP38C10 ring encircles the Blpy(2+) unit.

引用

页码：3187 / 3190

页数：4

共 53 条

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