monophosphoramidite ligands 6 a–m were synthesized, which demonstrated excellent enantioselectivity in RhI‐catalyzed asymmetric hydrogenation of a dehydro amino acid methyl ester. Ligands 6 a–m were also successfully applied in the RhI‐catalyzed enantioselective [4+2] cycloaddition of α,β‐unsaturated imines with isocyanates, which afforded the corresponding pyrimidinones in good yields (60–92 %) with high enantioselectivities
合成了一系列带有2,2'-二甲基,环戊基或环己基稠合环的1,1'-螺代双茚满-7,7'-二醇(SPINOL)类似物,并通过X阐明了它们的独特结构特征射线晶体学。在这些支架的基础上,合成了手性单亚磷酰胺配体6 a – m,在Rh I催化的脱氢氨基酸甲酯的不对称氢化反应中表现出优异的对映选择性。配体6 a – m也成功应用于Rh Iα,β-不饱和亚胺与异氰酸酯的催化对映选择性[4 + 2]环加成反应,可提供相对应的嘧啶酮,收率高(60-92%),对映选择性高(75-92%ee)。