Journal of Heterocyclic Chemistry p. 175 - 180 (2000)
Update date:2022-07-29
Topics:
Vicentini, Chiara B.
Mazzanti, Manuela
Morelli, Carlo F.
Manfrini, Maurizio
Ethyl 2-amino-3-methoxycarbonyl-4-oxo-2-pentenoate (3) reacts with hydroxylamine or hydrazines to give isoxazole and pyrazole ortho-dicarboxylic acid esters 4 and 5, respectively. Partial hydrolysis of diesters 4 and 5 afforded the corresponding dicarboxy
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