The stereoselective preparation of vinylboronates via rhodium‐catalyzed borylation of E/Z mixtures of vinyl actetates is described, and this method was also extended to synthesis of vinyldiboronates. These transformations feature high functional group compatibility and mild reaction conditions. Control experiments support a mechanism that involved a Rh‐catalyzed borylation‐isomerization sequence. The
描述了通过
铑催化的
乙酸乙烯酯的E / Z混合物的
硼酸化
硼酸立体选择性地制备
乙烯基硼酸酯的方法,该方法还扩展到
乙烯基二
硼酸酯的合成。这些转变具有高官能团相容性和温和的反应条件。对照实验支持一种涉及Rh催化的
硼酸酯化异构化序列的机制。还证明了(Z)-
乙烯基硼酸酯的异构化为(E)-异构体。