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Intermolecular Photocatalyzed Heck-like Coupling of Unactivated Alkyl Bromides by a Dinuclear Gold Complex

机译:双核金络合物的分子间光催化未活化的烷基溴的Heck样偶联。

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摘要

A practical protocol for a photocatalyzed alkyl-Heck-like reaction of unactivated alkyl bromides and different alkenes promoted by dinuclear gold photoredox catalysis in the presence of an inorganic base is reported. Primary, secondary, and tertiary unactivated alkyl bromides with beta-hydrogen can be applied. Esters, aldehydes, ketones, nitriles, alcohols, heterocycles, alkynes, alkenes, ethers, and halogen moieties are all well tolerated. In addition to 1,1-diarylalkenes, silylenolethers and enamides can also be applied, which further increases the synthetic potential of the reaction. The mild reaction conditions, broad substrate scope, and an excellent functional-group tolerance deliver an ideal tool for synthetic chemists that can even be used for challenging late-stage modifications of complex natural products.
机译:报道了在无机碱存在下,由双核金光氧化还原催化促进的未活化烷基溴和不同烯烃的光催化烷基-Heck-样反应的实用方案。可以使用伯,仲和叔未活化的具有β-氢的烷基溴。酯,醛,酮,腈,醇,杂环,炔烃,烯烃,醚和卤素部分均具有良好的耐受性。除了1,1-二芳基烯烃外,还可以使用甲硅烷基醚和烯酰胺,这进一步增加了反应的合成潜力。温和的反应条件,宽泛的底物范围和出色的官能团耐受性为合成化学家提供了理想的工具,甚至可以用于挑战复杂的天然产物的后期修饰。

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