C–H Functionalization of Amines via Alkene-Derived Nucleophiles through Cooperative Action of Chiral and Achiral Lewis Acid Catalysts: Applications in Enantioselective Synthesis
作者:Ming Shang、Jessica Z. Chan、Min Cao、Yejin Chang、Qifan Wang、Brennan Cook、Sebastian Torker、Masayuki Wasa
DOI:10.1021/jacs.8b06699
日期:2018.8.22
N-alkylamines and α,β-unsaturated compounds, performed under redox-neutral conditions, and promoted through concerted action of seemingly competitive Lewis acids, B(C6F5)3, and a chiral Mg-PyBOX complex. Thus, a wide variety of β-amino carbonyl compounds may be synthesized, with complete atom economy, through stereoselective reaction of an in situ-generated enantiomerically enriched Mg-enolate and an appropriate
已经开发了 α-氨基 CH 键的催化转化,以提供有价值的对映体富集的 α-取代胺,这些实体在药物和生物活性天然产品中很普遍。通常,此类过程在氧化条件下进行并且需要贵金属基催化剂。在这里,我们公开了 N-烷基胺和 α,β-不饱和化合物的对映选择性结合的策略,在氧化还原中性条件下进行,并通过看似有竞争力的路易斯酸、B(C6F5)3 和手性镁的协同作用促进-PyBOX 复合体。因此,通过原位生成的对映体富集的镁烯醇化物和合适的亲电子试剂的立体选择性反应,可以合成多种 β-氨基羰基化合物,具有完全的原子经济性。