Herein, we report a new photochemical method for C(sp³)–H chlorination of amides which employs tert-butyl hypochlorite as the chlorinating agent and a household compact fluorescent lamp as the light source. The reaction proceeds via N-heterocyclic carbene SIPr·HCl-promoted N–H chlorination and subsequent photoinduced Hofmann–Löffler–Freytag chlorine atom transfer. The latter process is facilitated by (diacetoxyiodo)benzene. This protocol exhibits a broad scope and is suitable for site-selective chlorination of methyl hydrogen as well as methylene and methine hydrogen.

中文翻译：

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脂肪酰胺的光诱导位点选择性C（sp ³）–H氯化

在此，我们报告了一种新的光化学方法，用于酰胺的C（sp ³）-H氯化反应，该方法采用次氯酸叔丁酯作为氯化剂，并使用家用紧凑型荧光灯作为光源。反应通过N杂环卡宾SIPr·HCl促进的N–H氯化反应进行，随后进行光诱导的Hofmann–Löffler–Freytag氯原子转移。（二乙酰氧基碘）苯促进了后一种方法。该方案具有广泛的适用范围，适用于甲基氢以及亚甲基和次甲基氢的现场选择性氯化。