| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5281658 | Tetrahedron Letters | 2008 | 4 Pages |
A new synthetic way is described to prepare 4-trimethylammonio-2,2,6,6-tetramethylpiperidine-1-yloxyl bearing tetrafluoroborate, hexafluorophosphate or bis(trifluoromethylsulfonylimide) by an anion metathesis of 4-trimethylammonio-2,2,6,6-tetramethylpiperidine-1-yloxyl iodide using the corresponding silver salts. 4-Trimethylammonio-2,2,6,6-tetramethylpiperidine-1-yloxyl iodide is obtained by the methylation of 4-amino-2,2,6,6-tetramethylpiperidine-1-yloxyl with methyliodide. The new spin probe 4-trimethylammonio-2,2,6,6-tetramethylpiperidine-1-yloxyl bistrifluoromethylsulfonylimide and the spin probes containing tetrafluoroborate or hexafluorophosphate may be useful for an effective investigation of ionic liquids with similar anions.
Graphical abstractAnion metathesis of 4-trimethylammonio-2,2,6,6-tetramethylpiperidine-1-yloxyl iodide using silver salts gives the new 4-trimethylammonio-2,2,6,6-tetramethylpiperidine-1-yloxyl bis(trifluoromethylsulfonylimide) and further spin probes with tetrafluoroborate or hexafluorophosphate as anions.Download full-size image
