A General Solution for Unstable Boronic Acids: Slow-Release Cross-Coupling from Air-Stable MIDA Boronates

被引:468
作者
Knapp, David M. [1 ]
Gillis, Eric P. [1 ]
Burke, Martin D. [1 ]
机构
[1] Univ Illinois, Roger Adams Lab, Dept Chem, Urbana, IL 61801 USA
基金
美国国家科学基金会;
关键词
ARYL HALIDES; CYCLOPROPYLBORONIC ACID; SUZUKI; PALLADIUM; EFFICIENT; ESTERS; HETEROARYL; COMPLEXES; CHLORIDES; DERIVATIZATION;
D O I
10.1021/ja901416p
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Many boronic acids, including 2-heterocyclic, vinyl, and cyclopropyl derivatives, are inherently unstable, which can limit their benchtop storage and/or efficient cross-coupling. We herein report the first general solution to this problem: in situ slow release of unstable boronic acids from the corresponding air-stable MIDA boronates. This remarkably general approach has transformed all three classes of these unstable boronic acids into shelf-stable and highly effective building blocks for cross-coupling with a wide range of aryl and heteroaryl chlorides.
引用
收藏
页码:6961 / +
页数:4
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