| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5275001 | Tetrahedron Letters | 2011 | 5 Pages |
Abstract
The 1,3-dipolar cycloaddition of 2-oxo-(2H)-acenaphthylen-1-ylidene-malononitrile and 2-fluoren-9-ylidene-malononitrile as dipolarophiles have been investigated for the first time with the azomethine ylides generated in situ from N-substituted isatin and sarcosine to furnish novel dispiro heterocycles. The structure and relative stereochemistry of both types of cycloadducts were confirmed by single crystal X-ray diffraction, as well as with the help of 1H, 13C, and HMBC spectroscopic methods.
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