Kim Minjae, Kim Gwanggyun, Kim Doyoon, Lee Jun Hee, Cho Seung Hwan
Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
Department of Advanced Materials Chemistry, Dongguk University WISE, Gyeongju 38066, Republic of Korea.
Beilstein J Org Chem. 2025 Mar 20;21:639-658. doi: 10.3762/bjoc.21.51. eCollection 2025.
The transition-metal-catalyzed asymmetric allylic substitution represents a pivotal methodology in organic synthesis, providing remarkable versatility for complex molecule construction. Particularly, the generation and utilization of chiral secondary alkylcopper species have received considerable attention due to their unique properties in stereoselective allylic substitution. This review highlights recent advances in copper-catalyzed asymmetric allylic substitution reactions with chiral secondary alkylcopper species, encompassing several key strategies for their generation: stereospecific transmetalation of organolithium and organoboron compounds, copper hydride catalysis, and enantiotopic-group-selective transformations of 1,1-diborylalkanes. Detailed mechanistic insights into stereochemical control and current challenges in this field are also discussed.
过渡金属催化的不对称烯丙基取代是有机合成中的关键方法,为复杂分子构建提供了显著的通用性。特别是,手性仲烷基铜物种的生成和利用因其在立体选择性烯丙基取代中的独特性质而受到了广泛关注。本文综述了铜催化的手性仲烷基铜物种不对称烯丙基取代反应的最新进展,包括其生成的几种关键策略:有机锂和有机硼化合物的立体专一性转金属化、氢化铜催化以及1,1-二硼基烷烃的对映异位基团选择性转化。还讨论了该领域立体化学控制的详细机理见解和当前挑战。