Unusually Lowered Acidity of Ammonium Group Surrounded by Crown Ether in a Rotaxane System and Its Acylative Neutralization
- 1 May 2000
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 29 (5) , 506-507
- https://doi.org/10.1246/cl.2000.506
Abstract
Acidity of a secondary ammonium group in a rotaxane system with a crown ether was unusually lowered. N-Acylation of the ammonium group by acid anhydrides or chlorides proceeded slowly in the presence of excess tertiary amine to give the N-acylated rotaxanes without salt structure.Keywords
This publication has 10 references indexed in Scilit:
- Triphenylphosphonium-Stoppered [2]RotaxanesOrganic Letters, 1999
- A new protocol for rotaxane synthesisTetrahedron Letters, 1999
- Self-Assembly of [2]Catenanes Containing Metals in Their BackbonesAccounts of Chemical Research, 1998
- Acid−Base Controllable Molecular ShuttlesJournal of the American Chemical Society, 1998
- Functional Rotaxanes: From Controlled Molecular Motions to Electron Transfer Between Chemically Nonconnected ChromophoresChemistry – A European Journal, 1998
- Cyclodextrin-Based Catenanes and RotaxanesChemical Reviews, 1998
- Molecular MachinesAccounts of Chemical Research, 1998
- A Light-Driven Molecular Shuttle Based on a RotaxaneJournal of the American Chemical Society, 1997
- Self‐Assembly in Natural and Unnatural SystemsAngewandte Chemie International Edition in English, 1996
- Pseudorotaxanes Formed Between Secondary Dialkylammonium Salts and Crown EthersChemistry – A European Journal, 1996