Alkaline earth metal salts of chiral bis-sulfonimide were prepared in this study. Asymmetric Diels-Alder reactions catalyzed by these metal salts were examined to evaluate the performance of bis-sulfonimide as a chiral ligand. The Diels-Alder reaction between 2-propenoyl pyrazole and cyclopentadiene catalyzed by the calcium salt afforded the cycloaddition product with moderate stereoselectivity.
本研究制备了手性双磺
酰亚胺的碱土
金属盐。研究了由这些
金属盐催化的不对称 Diels-Alder 反应,以评估双磺
酰亚胺作为手性
配体的性能。由
钙盐催化的 2-
丙烯酰基
吡唑和
环戊二烯之间的 Diels-Alder 反应提供了具有中等立体选择性的环加成产物。