2,4,6-Triphenylphosphinine and 2,4,6-triphenylposphabarrelene revisited: synthesis, reactivity and coordination chemistry
作者:M. Rigo、J. A. W. Sklorz、N. Hatje、F. Noack、M. Weber、J. Wiecko、C. Müller
DOI:10.1039/c5dt03609g
日期:——
The synthesis of 2,4,6-triphenylphosphinine has been revisited and a general protocol for the preparation of such low-coordinate phosphorus compounds in good to excellent yields could be established. This allows to investigate several aspects of the chemistry of 2,4,6-triarylphosphinine, such as the reaction with in situ generated benzyne to give 2,4,6-triphenylphosphabarrelene. The corresponding 2
2,4,6-三苯基膦的合成已被重新研究,可以建立制备这类低配位磷化合物的通用方案,其收率好至极佳。这允许研究2,4,6-三芳基次膦的化学反应的多个方面,例如与原位生成的苯并炔反应生成2,4,6-三苯基磷杂芳烃。相应的2,4,6-三苯基磷杂环戊烯硒化物可以首次在结晶学上进行表征,并且与经典的三芳基膦相比,该笼型化合物的结构和电子性能得以评估。此外,[(L)W(CO)5)]制备了2,4,6-三苯基膦和2,4,6-三苯基磷杂环戊烯的配合物,并通过X射线晶体学对其进行了表征。这首次使这些相关的磷化合物在结构上与相同的金属片段直接进行了直接比较。