Journal of the Chinese Chemical Society p. 63 - 68 (1999)
Update date:2022-08-03
Topics:
Lin, Shaw-Tao
Yang, Mein-Lin
Tien, Hsien-Ju
The phenyl ring of 3-(4-hydrazinocarbonylphenyl)sydnone activates a hydrazinocarbonyl group to undergo a series of reactions for preparing heterocyclic compounds including oxadiazoles, dihydropyrroles, and pyrroles. However, the hydrazinocarbonyl group on the C(4)-CH2 resists a cyclization under the same reaction conditions.
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