An eco‐friendly, straightforward, and three‐component [2+2+2] cycloaddition reaction of 4‐aryliden‐2‐phenyl‐5(4H)‐oxazolones and substituted β‐nitrostyrenes to construct diversified 3‐oxa‐1‐azaspiro[4.5]dec‐1‐en‐4‐ones has been developed with good yields and regio‐ and diastereoselectivity. This reaction proceeds via a one‐pot [2+2+2] cycloaddition utilizing cesium carbonate as a promoter and shows high atom economy under the reaction conditions.

中文翻译：

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Cs2CO3促进的4-Aryliden-5（4H）-恶唑酮和β-硝基苯乙烯的[2 + 2 + 2]环加成反应：获得螺环烷基恶唑酮

4-芳基-2--2-苯基-5（4H）-恶唑酮与取代的β-硝基苯乙烯的生态友好，直接，三组分[2 + 2 + 2]环加成反应，从而构建多样化的3-oxa-1-azaspiro [4.5] dec-1-en-4-ones的开发具有良好的收率，区域和非对映选择性。该反应通过使用碳酸铯作为促进剂的单锅[2 + 2 + 2]环加成反应进行，在反应条件下显示出高原子经济性。