Abstract
A [2]catenane in which the macrocyclic polyether, bisparaphenylene[34] crown-10, is interlocked with the tetracationic cyclophane, cyclobis-(paraquat- p-phenylene), is shown by dynamic 1H NMR spectroscopy, using (i) neutral and (ii) anionic chiral shift reagents (CSRs), to exist at low temperatures (197 K) in acetone-d6 solutions as 1:1 and 2:1 mixtures of diastereoisomeric complexes and salts, respectively, as a consequence of the helical chirality associated with the [2]catenane interacting with the CSRs.
Original language | English (US) |
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Pages (from-to) | 1095-1098 |
Number of pages | 4 |
Journal | Organic Letters |
Volume | 6 |
Issue number | 7 |
DOIs | |
State | Published - Apr 1 2004 |
ASJC Scopus subject areas
- Biochemistry
- Physical and Theoretical Chemistry
- Organic Chemistry