Nazarov cyclizations are catalyzed by a dicationic Ni(II) complex containing the chiral tridentate phosphine Pigiphos; the catalyst exerts a high degree of torquoselectivity and affords the products in up to 88% ee.
纳扎罗夫环化反应是由含有手性三叉膦 Pigiphos 的阳离子 Ni(II) 复合物催化的;该
催化剂具有很高的扭矩选择性,可提供高达 88% ee 的产物。