Abstract The first example of recyclable Zn(ANA)2Cl2 catalyzed tandem one-pot three-component protocol reaction between aromatic aldehydes, malononitrile, and phenylmethylpyrazolone to furnish 4-substituted-1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile (4a–l) in a short reaction time (∼10 min) in aqueous media at room temperature is described. Graphical Abstract
摘要 可回收的 Zn(ANA)2Cl2 催化芳香醛、
丙二腈和苯基甲基
吡唑酮之间的串联一锅三组分协议反应以提供 4-取代-1,4-二氢
吡喃并[2,3-c]
吡唑-5 的第一个例子描述了在室温下在
水性介质中的短反应时间(~10 分钟)内的 -腈(4a-l)。图形概要