作者:Mukund P. Sibi、Shankar Manyem、Hector Palencia
DOI:10.1021/ja064472a
日期:2006.10.1
The concept of "fluxional additives", additives that can adopt enantiomeric conformations depending on the chiral information in the ligand, is demonstrated in enantioselective Diels-Alder and nitrone cycloaddition reactions. The additive design is modular, and diverse structures are accessible in three steps. Chiral Lewis acids from main group and transition metals show enhancements in enantioselectivity
“通量添加剂”的概念,即可以根据配体中的手性信息采用对映体构象的添加剂,在对映选择性 Diels-Alder 和硝酮环加成反应中得到了证明。增材设计是模块化的,可以通过三个步骤访问不同的结构。在这些添加剂的存在下,来自主族和过渡金属的手性路易斯酸显示出对映选择性的增强。