Tetrahedron Letters p. 55 - 58 (1982)
Update date:2022-08-02
Topics:
Huisgen, Rolf
Gambra, Francisco Palacios
The 1,2,3-oxadiazolidines resulting from the addition of 4,4'-dicyanoazoxybenzene to trans-cyclooctene or cis,trans-cycloocta-1,5-diene are not stable, but suffer 1,3-dipolar cycloreversion to give an azomethine imine; this intermediate is either captured by a second molecule of the starined cycloalkene to give 1:2 adducts in high yields ot it tautomerizes to an enehydrazine. 4,4-Dinitroazoxybenzene and benzo
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