Various 1,4-dihydropyridine derivatives were efficiently synthesized from arylidenemalononitriles and β-enamino imides using DBU (3 mol%) as the catalyst at room temperature. This mild, straightforward high-yielding protocol was atom-economy, time-economy, with a low catalyst load, and without the need for reflux.

中文翻译：

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DBU催化从丙烯叉基丙二腈和丙烯腈高效合成1,4-二氢吡啶衍生物

在室温下，使用DBU（3 mol％）作为催化剂，由芳基丙二腈和β-烯氨基酰亚胺有效地合成了各种1,4-二氢吡啶衍生物。这种温和，简单，高产的方案是原子经济，时间经济，催化剂负载低且无需回流。