已开发出一种操作简单的直接叠氮化1,3-二羰基化合物的方法。使用叠氮化钠和基于碘的氧化剂(例如I 2或2-碘氧基苯甲酸(IBX)-SO 3 K / NaI ),反应可在环境条件下轻松进行。尤其是,后一种方法作为一种新型且平衡良好的氧化剂,具有出色的官能团耐受性和底物范围,因此可以使用各种叔二叠氮基和2,2-双叠氮基1,3-二羰基化合物使用传统方法将更难以访问。由于含叠氮化物的产品容易与炔烃进行1,3-偶极环加成反应,因此我们的报告提出了一条通往敏感复杂分子类似物的新途径。
π-Coordinating Chiral Primary Amine/Palladium Synergistic Catalysis for Asymmetric Allylic Alkylation
作者:Yaning Wang、Junli Chai、Chang You、Jie Zhang、Xueling Mi、Long Zhang、Sanzhong Luo
DOI:10.1021/jacs.9b13026
日期:2020.2.12
synergistic catalysis for asymmetric allylic alkylation of α-branched β-ketocarbonyls. The use of arene-containing chiral primary amine catalyst led to not only enhanced reaction rate but also reversed chiral induction comparing with its sterically bulky derivative. Both enantiomers of the allylic adducts bearing acyclic all-carbon quaternary stereocenters could be obtained from the same configured chiral aminocatalyst