Nitrone [2]Rotaxanes: Simultaneous Chemical Protection and Electrochemical Activation of a Functional Group
作者:Daniel M. D’Souza、David A. Leigh、Loïc Mottier、Kathleen M. Mullen、Francesco Paolucci、Simon J. Teat、Songwei Zhang
DOI:10.1021/ja1034683
日期:2010.7.14
use of the hydrogen-bond-accepting properties of neutralnitrone moieties to prepare benzylic amide macrocycle-containing [2]rotaxanes in yields as high as 70%. X-ray crystallography showed the presence of up to four intercomponent hydrogen bonds between the amide groups of the macrocycle and the two nitrone groups of the thread. Dynamic (1)H NMR studies of the rates of macrocycle pirouetting in nonpolar