Synthesis of 3‐N‐acetyl‐N‐arylaminoacetyl‐4‐ethoxycarbonyl‐5‐methylpyrazoles

Abstract
The acetylation of 2‐N‐arylaminomethylene‐4‐ethoxycarbonyl(or acetyl)‐5‐melhyl‐3(2H)furan‐ones produces N‐acetylated compounds which react with hydrazine to yield substituted pyrazoles.

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