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Miyaura Borylation and One‐Pot Two‐Step Homocoupling of Aryl Chlorides and Bromides under Solvent‐Free Conditions
Advanced Synthesis & Catalysis ( IF 4.4 ) Pub Date : 2016-02-23 , DOI: 10.1002/adsc.201500844
Pavel B. Dzhevakov , Maxim A. Topchiy , Daria A. Zharkova , Oleg S. Morozov , Andrey F. Asachenko , Mikhail S. Nechaev

Solvent‐free protocols for Miyaura borylation and the one‐pot, two‐step homocoupling of aryl halides are reported for the first time. Bis(dibenzylideneacetone)palladium(0) [Pd(dba)2] is an optimal source of palladium for Miyaura borylation, while for one‐pot two‐step homocoupling palladium(II) acetate [Pd(OAc)2] gives highest yields. Aryl bromides are coupled most efficiently using the DPEphos ligand. Chlorides are coupled using XPhos. The developed protocols are robust, versatile and easily reproducible on a large scale.

中文翻译:

无溶剂条件下的芳浦硼化和芳基氯化物和溴化物的一锅两步均偶联

首次报道了宫浦硼化反应的无溶剂方案和芳基卤化物的一锅,两步均偶联。双(二亚苄基丙酮)钯(0)​​[Pd(dba)2 ]是用于宫浦硼酸化的最佳钯来源,而对于一锅两步均偶联的乙酸钯(II)[Pd(OAc)2 ]则可提供最高的收率。使用DPEphos配体可以最有效地偶联芳基溴化物。氯化物使用XPhos偶联。所开发的协议功能强大,用途广泛且易于大规模复制。
更新日期:2016-02-23
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