[Retracted] Enantioselective Rh- or Ir-catalyzed Directed C(sp<sup>3</sup>)–H Borylation with Phosphoramidite Chiral Ligands
作者:Ronald L. Reyes、Tomoya Harada、Tohru Taniguchi、Kenji Monde、Tomohiro Iwai、Masaya Sawamura
DOI:10.1246/cl.170853
日期:2017.12.5
Enantioselective heteroatom-directed C(sp3)–H borylation reactions of 2-aminopyridines and 2-alkylpyridines with Rh- and Ir catalytic systems using commercially available chiral monophosphine ligands, respectively, were developed. This methodology provides an innovative example of a homogeneous catalytic system for C(sp3)–H borylation, and allows the direct synthesis of optically active alkylboronates
分别使用市售的手性单膦配体开发了 2-氨基吡啶和 2-烷基吡啶与 Rh-和 Ir 催化体系的对映选择性杂原子定向 C(sp3)-H 硼酸化反应。该方法为 C(sp3)-H 硼酸化的均相催化系统提供了一个创新示例,并允许直接合成具有中等对映选择性的光学活性烷基硼酸酯。