Branched [n]rotaxanes (n = 2–4) from multiple dibenzo-24-crown-8 ether wheels and 1,2-bis(4,4′-dipyridinium)ethane axles
作者:Stephen J. Loeb、David A. Tramontozzi
DOI:10.1039/b418772e
日期:——
possibility of incorporating the 1,2-bis(pyridinium)ethane[subset or is implied by]24C8 [2]pseudorotaxane motif into dendrimer like macromolecules, a series of branched [n]rotaxanes were prepared employing multiple dibenzo-24-membered crown ether wheels with various aromatic core structures and the 1,2-bis(4,4'-dipyridinium)ethane axle. Yields of branched [2]-, [3]- and [4]rotaxanes were dependent
为了研究将1,2-双(吡啶)乙烷[子集]或由24C8 [2]假轮烷基序掺入树枝状大分子(如大分子)的可能性,采用了多种二苯并24-24-,制备了一系列支链的[n]轮烷。带有各种芳族芯结构和1,2-双(4,4'-二吡啶基)乙烷轴的成员冠醚轮。支链[2]-,[3]-和[4]轮烷的收率取决于核的大小和围绕核单元排列的冠醚的相对接近度。