Asymmetric Synthesis of Enantiopure Pyrrolidines by C(sp
<sup>3</sup>
)−H Amination of Hydrocarbons
作者:Yanis Lazib、Pascal Retailleau、Tanguy Saget、Benjamin Darses、Philippe Dauban
DOI:10.1002/anie.202107898
日期:2021.9.27
asymmetric synthesis of enantiopure pyrrolidines is reported via a streamlined strategy relying on two sequential C−H functionalizations of simple hydrocarbons. The first step is a regio- and stereoselective catalytic nitrene C−H insertion. Then, a subsequent diastereoselective cyclization involving a 1,5-hydrogen atom transfer (HAT) from a N-centered radical leads to the formation of pyrrolidines that can
对映体纯吡咯烷的不对称合成是通过依赖于简单烃的两个连续 CH 官能化的简化策略报道的。第一步是区域选择性和立体选择性催化氮烯 CH 插入。然后,随后的非对映选择性环化反应涉及来自 N 中心自由基的 1,5-氢原子转移 (HAT),导致形成吡咯烷,然后可以将其转化为游离的 NH 衍生物。