Article ID Journal Published Year Pages File Type
5275387 Tetrahedron Letters 2012 4 Pages PDF
Abstract

We describe herein shelf-stable, isolable, and characterizable pyridyl lithium trihydroxy and triisopropoxy 2-borate salts (LTBS) for use in modified Suzuki-Miyaura cross-coupling reactions that can be produced in quantities greater than one hundred grams. Pyridyl LTBS provide a viable cross-coupling alternative to unstable 2-pyridylboronic acids, boronates, and trifluoroborate salt derivatives. We also demonstrate the synthesis and cross-coupling of shelf-stable LTBS reagents of other sp2-hybridized nitrogen-containing heterocycles including thiazole, pyrazine, quinoline, and isoquinoline heterocycles.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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