Nickel-catalyzed Negishi cross-coupling reactions of secondary alkylzinc halides and aryl iodides.
Nickel-catalyzed Negishi cross-coupling reactions of secondary alkylzinc halides and aryl iodides.
复制标题
继发烷基卤化物和芳基碘化物的镍催化的Negishi negishi交叉偶联反应。
DOI:
10.1021/ol200098d
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发表时间:
2011-03-04
期刊:
影响因子:
5.2
通讯作者:
Biscoe MR
中科院分区:
文献类型:
--
作者:
Joshi-Pangu A;Ganesh M;Biscoe MR
A general Ni-catalyzed process for the cross-coupling of secondary alkylzinc halides and aryl/heteroaryl iodides has been developed. This is the first process to overcome the isomerization and β-hydride elimination problems that are associated with the use of secondary nucleophiles, and that have limited the analogous Pd-catalyzed systems. The impact of salt additives was also investigated. It was found that the presence of LiBF4 dramatically improves both isomeric retention and yield for challenging substrates.
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