Heterocycles p. 77 - 94 (2005)
Update date:2022-08-04
Topics:
Jung, Jae-Chul
Blake Watkins
Avery, Mitchell A.
A versatile synthetic method for preparing 3-pyrazolin-5-ones and 5,8-dihydro-1H-pyrazolo[1,2-a]pyridazines from simple β-keto esters is demonstrated. The synthetic strategies involve the acylation of β-keto esters, cyclocondensation with hydrazine followed by trapping with a diene under oxidative conditions.
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