The unprotected 1,2-anhydro aldopyranoses have been detected for the first time using low-temperature NMR spectroscopy. The formation of these unstable chemical species was successfully achieved through an intramolecular dehydration of saccharides in aqueous media under extremely mild and essentially neutral conditions.
- Low-temperature NMR spectroscopy
- Unprotected 1 2-anhydro sugar
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