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Regioselectivity studies of sydnone cycloaddition reactions of azine-substituted alkynes

✍ Scribed by Robert S. Foster; Harald Jakobi; Joseph P.A. Harrity

Book ID
104098889
Publisher
Elsevier Science
Year
2011
Tongue
French
Weight
389 KB
Volume
52
Category
Article
ISSN
0040-4039

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## Abstract Thermally initiated cycloaddition reactions of nonsymmetrical allenyl azines **1** with alkynes or other dipolarophiles usually lead to compounds with three fused, five‐membered heterocyclic rings. With alkynes with pronounced β€œpush–pull” systems, however, the reaction ends with the for