The apicophilicity for a series of monodentate groups were determined by deducing activation parameters of equilibration between diastereomeric spirophosphoranes bearing a Martin ligand and a modified Martin ligand. The equilibration was shown to be an intramolecular process and the order of apicophilicity of the groups turned out to be OMe≈H>COMe≈SMe>NMe2>Me>n-Bu on the basis of activation enthalpy
通过推导带有马丁
配体和修饰的马丁
配体的非对映体螺正膦之间的平衡活化参数来确定一系列单齿基团的亲脂性。表现出平衡是分子内过程,并且基于活化焓,这些基团的亲脂性的顺序被证明为OMe≈H>COMe≈SMe> NMe 2 > Me> n- Bu。通过带有COMe(受体)和NMe 2(供体)基团的对称类似物的X射线结构揭示了π共轭型相互作用的参与。