Visible-light-induced cross-coupling of aryl iodides with hydrazones <i>via</i> an EDA-complex
作者:Pan Pan、Shihan Liu、Yu Lan、Huiying Zeng、Chao-Jun Li
DOI:10.1039/d2sc01909d
日期:——
photosensitizer-free cross-coupling of aryl iodides with hydrazones was developed. In this strategy, hydrazones were used as alternatives to organometallic reagents, in the absence of a transition metal or an external photosensitizer, making this cross-coupling mild and green. The protocol was compatible with a variety of functionalities, including methyl, methoxy, trifluoromethyl, halogen, and heteroaromatic
开发了一种可见光诱导的、过渡金属和无光敏剂的芳基碘与腙的交叉偶联。在该策略中,腙被用作有机金属试剂的替代品,在没有过渡金属或外部光敏剂的情况下,使这种交叉偶联温和且绿色。该协议与多种功能兼容,包括甲基、甲氧基、三氟甲基、卤素和杂芳环。机理研究表明,腙阴离子与芳基卤化物的缔合形成电子供体-受体复合物,当其在可见光下激发时,通过单电子转移产生芳基自由基。