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温和钴催化(杂)芳基锌试剂与(杂)芳基卤化物的 Negishi 交叉偶联反应。

Mild Cobalt-Catalyzed Negishi Cross-Couplings of (Hetero)arylzinc Reagents with (Hetero)aryl Halides.

机构信息

Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377, Munich, Germany.

出版信息

Angew Chem Int Ed Engl. 2016 Mar 7;55(11):3809-12. doi: 10.1002/anie.201510665. Epub 2016 Feb 16.

DOI:10.1002/anie.201510665
PMID:26879151
Abstract

A catalytic system consisting of CoCl2 ⋅2 LiCl (5 mol %) and HCO2 Na (50 mol %) enables the cross-coupling of various N-heterocyclic chlorides and bromides as well as aromatic halogenated ketones with various electron-rich and -poor arylzinc reagents. The reactions reached full conversion within a few hours at 25 °C.

摘要

由 CoCl2 ⋅2LiCl(5mol%)和 HCO2Na(50mol%)组成的催化体系能够实现各种 N-杂环氯化物和溴化物以及各种富电子和缺电子芳基锌试剂与各种芳香族卤代酮的交叉偶联。反应在 25°C 下仅需数小时即可达到完全转化。

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