Tranmer GK, Tam W. Intramolecular 1,3-dipolar cycloadditions of norbornadiene-tethered nitrones.
J Org Chem 2001;
66:5113-23. [PMID:
11463264 DOI:
10.1021/jo015610b]
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Abstract
Efficient routes to the synthesis of norbornadiene-tethered nitrones have been developed, and their intramolecular 1,3-dipolar cycloadditions were studied. The cycloadditions occurred in moderate to good yields for a variety of substrates and were found to be highly regio- and stereoselective, giving single regio- and stereoisomers in most cases.
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