A protocol of [3 + 3]-cycloaddition was proposed for the synthesis of 2H-1,4-thiazin-3(4H)-ones and thiomorpholine-3,5-diones from α-chlorohydroxamates and 1,4-dithiane-2,5-diol. This direct and practical method provides a novel and rapid approach for the synthesis of thiomorpholin-3-one derivatives under mild condition with moderate to good yield and wide functional group tolerance.

中文翻译：

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获得硫吗啡啉-3-酮衍生物：α-氯代羟肟酸酯和1,4-二硫代-2,5-二醇的[3 + 3]-环加成

提出了一种[3 + 3]-环加成反应的方案，用于由α-氯代羟肟酸酯和1,4-二硫杂环丁烷合成2 H -1,4-噻嗪-3（4 H）-ones和thiomorpholine-3,5-diones。 -2,5-二醇。这种直接而实用的方法为在温和条件下以中等至良好的收率和宽泛的官能团耐受性合成硫吗啉-3-酮衍生物提供了一种新颖而快速的方法。