Kinetic data are presented which reveal haloalkylphosphines undergo anchimerically-assisted cyclization with the ring-size preference 5 > 6 > 3 > 4. Also, phenylthio and diphenylphosphino groups are shown to have similar intramolecular nucleophilicities.
所提供的动力学数据揭示了卤代烷基膦经历了具有环大小偏好的5> 6> 3> 4的嵌合的辅助环化作用。此外,苯
硫基和
二苯基膦基团也显示出相似的分子内亲核性。