Mild and High-Yielding Syntheses of Diethyl Phosphoramidate-Stoppered [2]Rotaxanes
Resource
Organic Letters 6 (23): 4183-4186
Journal
Organic Letters
Journal Volume
6
Journal Issue
23
Pages
4183-4186
Date Issued
2004
Date
2004
Author(s)
Abstract
The mild and efficient reaction between triethyl phosphite and benzylic azides allows us not only to construct rotaxanes in high yield from dibenzo[24]crown-8 (DB24C8) and dibenzylammonium (DBA(+))-derived threads but also to incorporate di(p-toluidine)[24]crown-8, which binds DBA(+) ions much more weakly than does DB24C8, into a corresponding [2]rotaxane.
Type
journal article
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