Nickel-Catalyzed 1,1-Alkylboration of Electronically Unbiased Terminal Alkenes
时间:2019-05-10 17:06:19点击量:
Nickel-Catalyzed 1,1-Alkylboration of Electronically Unbiased Terminal Alkenes.
DOI:10.1002/anie.201903890
出版年:
文献类型:Journal Article
摘要
An unprecedented,
nickel-catalyzed,
1,
1-
alkylboration
of
electronically unbiased alkenes has been developed, providing straightforward access to secondary aliphatic boronic esters from readily available materials under very mild reaction conditions. The regioselectivity
of this reaction is governed by a unique pyridyl carboxamide ligated catalyst, rather than the substrates. Moreover, this transformation shows excellent chemo- and regio-selectivity and remarkably good functional group tolerance. We also demonstrate that under balloon-pressure, ethylene can also be utilized as a substrate. Additionally, competence experiments indicate that a selective bond formation is favored at the alpha-position
of boron and preliminary mechanistic studies indicate that the key step in this three-component reaction involves a
1,2-nickel migration.
关键词
关键词列表:1,1-regioselectivity; C(sp3)-C(sp3) coupling; alkene difunctionalization; alkylboration; nickel catalysis
作者信息
地址:CHINA.
Wuhan University, Institute for Advanced Studies, No. 299 Bayi Road, 430072, Wuhan, CHINA.
原文PDF链接:
https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201903890