Lithium trihydroxy/triisopropoxy-2-pyridylborate salts (LTBS): synthesis, isolation, and use in modified Suzuki–Miyaura cross-coupling reactions
作者:Kuanchiang Chen、Richard Peterson、Shivanand K. Math、James B. LaMunyon、Charles A. Testa、Dustin R. Cefalo
DOI:10.1016/j.tetlet.2012.06.145
日期:2012.9
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
我们在本文中描述了可用于修饰的Suzuki-Miyaura交叉偶联反应的货架稳定,可分离且可表征的吡啶基锂三羟基和三异丙氧基2-硼酸盐(LTBS),其用量可大于100克。吡啶基LTBS为不稳定的2-吡啶基硼酸,硼酸盐和三氟硼酸盐衍生物提供了可行的交叉偶联选择。我们还证明了其他sp 2-杂化的含氮杂环,包括噻唑,吡嗪,喹啉和异喹啉杂环的货架稳定LTBS试剂的合成和交叉偶联。