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Polyvinylpyridine-Supported Palladium Nanoparticles: A Valuable Catalyst for the Synthesis of Alkynyl Ketones via Acyl Sonogashira Reactions
Catalysis Letters ( IF 2.8 ) Pub Date : 2019-09-17 , DOI: 10.1007/s10562-019-02959-5
Gianluigi Albano , Salvatore Interlandi , Claudio Evangelisti , Laura Antonella Aronica

Abstract Palladium nanoparticles (NP) immobilized on metal scavengers (Smopex®-234, Smopex®-111, PVPy, 1% w/w) have been tested in the acyl Sonogashira reactions between terminal acetylenes and acid chlorides. Pd/PVPy resulted especially effective in the synthesis of alkynyl ketones with different stereoelectronic properties, even working with a very low amount of palladium (0.2 mol%). Preliminary tests seem to indicate that Pd/PVPy could act as a reservoir of very active palladium NP which are partially released during the reaction and then recaptured from the resin at the end of the process, thus ensuring the possibility of reuse of the catalyst. Graphic Abstract

中文翻译:

聚乙烯吡啶负载的钯纳米颗粒:一种有价值的催化剂,用于通过酰基 Sonogashira 反应合成炔基酮

摘要 固定在金属清除剂(Smopex®-234、Smopex®-111、PVPy、1% w/w)上的钯纳米粒子 (NP) 已在末端乙炔和酰氯之间的酰基 Sonogashira 反应中进行了测试。Pd/PVPy 在合成具有不同立体电子特性的炔基酮方面特别有效,甚至可以使用非常低的钯量 (0.2 mol%)。初步测试似乎表明 Pd/PVPy 可以作为非常活跃的钯 NP 的储库,在反应过程中部分释放,然后在过程结束时从树脂中重新捕获,从而确保催化剂重复使用的可能性。图形摘要
更新日期:2019-09-17
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