An efficient methodology for the synthesis of a variety of chromeno[3,4-c]pyrrol-4(2H)-ones from 2-hydroxychalcones and N-substituted β-enamine esters via I₂/base promoted Michael addition/cyclization/lactonization/aromatization sequence, affording the desired products in moderate to excellent yields. At same time, the reaction was synthesized polyheterocyclic compound from simple raw material and proceeded in high atom economy.

中文翻译：

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通过 I2/碱促进从 2-羟基查耳酮和 β-烯胺酯合成 Chromeno-[3,4-c]pyrrol-4(2H)-ones 的级联反应

一种通过 I ₂ /碱促进迈克尔加成/环化从 2-羟基查耳酮和N-取代的β-烯胺酯合成各种 chromeno[3,4 -c ]pyrrol-4(2 H ) -ones的有效方法/内酯化/芳香化顺序，以中等至极好的收率提供所需的产品。同时，该反应以简单的原料合成了多杂环化合物，并在高原子经济性下进行。