Abstract

A simple and efficient approach to the synthesis of fluorinated amino-substituted acetophenones in good to excellent yields is reported. The heart of the proposed method consists of conversion of a Me₃Si–C≡C– moiety into a MeC(=O)– group in the presence of p-tolu­ene­sulfonic acid (p-TSA) passing a stage of ethynylaniline formation. The reaction is metal-free, proceeds under mild conditions, and uses readily available starting compounds (trimethylsilylarylacetylene derivatives). The reaction provides access to amino-substituted acetophenones, which may serve as precursors for the synthesis of polyfluorinated azaheterocycles, having potential anticarcinogenic activity.

A simple and efficient approach to the synthesis of fluorinated amino-substituted acetophenones in good to excellent yields is reported. The heart of the proposed method consists of conversion of a Me₃Si–C≡C– moiety into a MeC(=O)– group in the presence of p-tolu­ene­sulfonic acid (p-TSA) passing a stage of ethynylaniline formation. The reaction is metal-free, proceeds under mild conditions, and uses readily available starting compounds (trimethylsilylarylacetylene derivatives). The reaction provides access to amino-substituted acetophenones, which may serve as precursors for the synthesis of polyfluorinated azaheterocycles, having potential anticarcinogenic activity.

中文翻译：

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对甲苯磺酸诱导的氟化三甲基甲硅烷基乙炔基苯胺向氨基苯乙酮的转化：用于合成苯并氮杂杂环的通用前体。

摘要

报道了一种简单有效的合成氟化氨基取代的苯乙酮的方法，收率很好。所提出方法的核心是在存在对乙磺酸（p -TSA）经过乙炔基苯胺形成阶段的情况下，将Me ₃ Si–C≡C–部分转化为MeC（= O）–基团。该反应是无金属的，在温和的条件下进行，并使用容易获得的起始化合物（三甲基甲硅烷基芳基乙炔衍生物）。该反应提供了获得氨基取代的苯乙酮的途径，其可以用作合成多氟氮杂杂环的前体，具有潜在的抗癌活性。

报道了一种简单有效的合成氟化氨基取代的苯乙酮的方法，收率很好。所提出方法的核心是在存在对乙磺酸（p -TSA）经过乙炔基苯胺形成阶段的情况下，将Me ₃ Si–C≡C–部分转化为MeC（= O）–基团。该反应是无金属的，在温和的条件下进行，并使用容易获得的起始化合物（三甲基甲硅烷基芳基乙炔衍生物）。该反应提供了获得氨基取代的苯乙酮的途径，其可以用作合成多氟氮杂杂环的前体，具有潜在的抗癌活性。