Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5224124 | Tetrahedron | 2010 | 5 Pages |
Abstract
The 1,3-dipolar cycloaddition reaction of unsymmetrically N-substituted and N-unsubstituted 1,3-oxazolium-5-olates with selected 3-substituted coumarins has been examined. Various types of pyrrole derivatives are isolated and their formation seems to be a function of the regio- and diastereochemistry of the initial cycloaddition step.
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