Tetrahedron Letters p. 7331 - 7334 (1992)
Update date:2022-07-29
Topics:
Banert, Klaus
Hagedorn, Manfred
1-Alkyl-1-(2,3-butadienyl)hydrazines 1b,d-g can be oxidized under mild conditions to yield 1-alkyl-2-(1-methylen-2-propenyl)diazenes 3.These E-configurated azo compounds are precursors for rapid inter- and intramolecular <4+2> cycloadditions to give the heterocyclic products 4 and 6-10.
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