AbstractTransition metal‐catalyzed enantioselective C−H carbonylation with carbon monoxide, an essential and easily available C1 feedstock, remains challenging. Here, we disclosed an unprecedented enantioselective C−H carbonylation catalyzed by inexpensive and readily available cobalt(II) salt. The reactions proceed efficiently through desymmetrization, kinetic resolution, and parallel kinetic resolution, affording a broad range of chiral isoindolinones in good yields with excellent enantioselectivities (up to 92 % yield and 99 % ee). The synthetic potential of this method was demonstrated by asymmetric synthesis of biological active compounds, such as (S)‐PD172938 and (S)‐Pazinaclone. The resulting chiral isoindolinones also serve as chiral ligands in cobalt‐catalyzed enantioselective C−H annulation with alkynes to construct phosphorus stereocenter.
摘要过渡金属催化的对映体选择性C-H羰基化反应与一氧化碳--一种重要且容易获得的C1原料--仍然具有挑战性。在此,我们揭示了一种前所未有的由廉价易得的钴(II)盐催化的对映体选择性 C-H 羰基化反应。反应通过非对称化、动力学解析和平行动力学解析高效地进行,以良好的产率和优异的对映选择性(高达 92% 的产率和 99% 的ee)获得了多种手性异吲哚啉酮。通过不对称合成生物活性化合物,如(S)-PD172938 和 (S)-Pazinaclone,证明了该方法的合成潜力。所得手性异吲哚啉酮还可作为手性配体,在钴催化下与炔烃进行对映选择性 C-H 环化反应,构建磷立体中心。