An efficient rhodium-catalyzed method for C–H olefination at the C7 position of indoles has been developed. The N-imino directing group was shown to be crucial for high regioselectivity and reactivity of the metal catalyst. The utility of this protocol was further demonstrated through a concise, four-step synthesis of pyroquilon from indole.

中文翻译：

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使用 N-亚氨基导向基团对含丙烯酸酯的吲哚衍生物进行铑催化的区域选择性 C7 官能化

开发了一种高效的铑催化吲哚 C7 位 C-H 烯化的方法。N-亚氨基导向基团被证明对金属催化剂的高区域选择性和反应性至关重要。通过从吲哚中合成吡喹酮的简洁四步合成进一步证明了该协议的实用性。