Search results

Search for "pseudorotaxane" in Full Text gives 28 result(s) in Beilstein Journal of Organic Chemistry.

Molecular recognition of organic ammonium ions in solution using synthetic receptors

  • Andreas Späth and
  • Burkhard König

Beilstein J. Org. Chem. 2010, 6, No. 32, doi:10.3762/bjoc.6.32

Graphical Abstract
  • secondary ammonium ion slips through the crown ether ring forming “pseudorotaxane” like structures (Figure 5). The structural variability of crown ethers is very large. This allows varying the ring size, introducing substituents and changing the donor sites from oxygen atoms, to nitrogen (azacrowns) or
PDF
Album
Review
Published 06 Apr 2010

Templated versus non-templated synthesis of benzo-21-crown-7 and the influence of substituents on its complexing properties

  • Wei Jiang and
  • Christoph A. Schalley

Beilstein J. Org. Chem. 2010, 6, No. 14, doi:10.3762/bjoc.6.14

Graphical Abstract
  • binding mode. Compared to dibenzo-24-crown-8, the complexing properties of benzo-21-crown-7 turn out to be more susceptible to modifications at the crown periphery. Keywords: benzo-21-crown-7; pseudorotaxane; self-sorting; supramolecular chemistry; template; Introduction Mechanically interlocked
  • ][18][19][20][21][22]. Recently, Huang and co-workers reported that the macrocycle size for forming pseudorotaxane can be reduced to only 21 atoms, namely benzo-21-crown-7 [23] (C7; Scheme 1) and pyrido-21-crown-7 [24], which could still slip over a secondary dialkylammonium ion when one of the alkyl
  • generated [6-H@C7]•PF6, suggesting that the thinner axle can thread into the crown ether to form the pseudorotaxane even in competition with the potassium ion. This conclusion is further supported by the formation of a white precipitate (KPF6) after addition of axle 6-H•PF6 to the (C7+KPF6) solution in 2:1
PDF
Album
Supp Info
Full Research Paper
Published 11 Feb 2010

Synthesis and binding studies of two new macrocyclic receptors for the stereoselective recognition of dipeptides

  • Ana Maria Castilla,
  • M. Morgan Conn and
  • Pablo Ballester

Beilstein J. Org. Chem. 2010, 6, No. 5, doi:10.3762/bjoc.6.5

Graphical Abstract
  • insensitivity to the size of the amino acid chain of the dipeptide guest, allows us to propose that the topology of the 1:1 complexes is not a pseudorotaxane as initially proposed in our design. Most likely, the guests, dipeptides and diamides, bind to the hydrogen-bonding groups that are directed toward the
PDF
Album
Supp Info
Full Research Paper
Published 19 Jan 2010
Other Beilstein-Institut Open Science Activities