Palladium Pincer Complex Catalyzed Substitution of Vinyl Cyclopropanes, Vinyl Aziridines, and Allyl Acetates with Tetrahydroxydiboron. An Efficient Route to Functionalized Allylboronic Acids and Potassium Trifluoro(allyl)borates
作者:Sara Sebelius、Vilhelm J. Olsson、Kálmán J. Szabó
DOI:10.1021/ja052885q
日期:2005.8.1
Palladium-catalyzed boronation of vinyl cyclopropane, vinyl aziridine, and allyl acetate substrates could be accomplished using tetrahydroxydiboron reagent in the presence of SeCSe pincer complex catalyst 1a. These reactions result in allyl boronic acids, which were converted to synthetically useful trifluoro(allyl)borates or allyl boronates. The catalytic transformations proceed under mild and neutral
钯催化的乙烯基环丙烷、乙烯基氮丙啶和乙酸烯丙酯底物的硼化可以在 SeCSe 钳形配合物催化剂 1a 存在下使用四羟基二硼试剂完成。这些反应产生烯丙基硼酸,其被转化为合成有用的三氟(烯丙基)硼酸酯或烯丙基硼酸酯。催化转化在温和和中性条件下进行,因此可以耐受许多官能团 Br、COOEt、ArSO2(NH)、OAc 和 SiRMe2。所提出的方法的选择性非常高,提供了包含反式双键的线性产品。