Linear Cu(<scp>i</scp>) chalcogenones: synthesis and application in borylation of unsymmetrical alkynes
作者:Katam Srinivas、Chatla Naga Babu、Ganesan Prabusankar
DOI:10.1039/c5dt02320c
日期:——
thermal properties of imidazoline-2-chalcogenones and their copper(I) derivatives are investigated. These complexes are able to act as catalysts in regioselective borylation of numerous unsymmetrical alkynes, yielding synthetically useful vinylboronates. Among catalysts 1–8, catalyst 4 is highly selective towards the regioselective boron addition of 1-phenyl-1-propyne.
描述了铜(I)硫属酮配合物的合成和结构。均一的单核铜(I)络合物[(IPr E)2 Cu] ClO 4,IPr E,1,3-双(2,6-二异丙基苯基)咪唑啉-2-硫酮(1)和1,3-双(2) ,6-二异丙基苯基)咪唑啉-2-硒酮(2); [(IMes E)2 Cu] ClO 4,IMes E,1,3-双(2,4,6-三甲基苯基)咪唑-2-硫酮(3)和1,3-双(2,4,6-三甲基苯基) )咪唑-2-硒酮(4); [(IPr E)2 Cu] BF 4,E = S(5);E =硒(6)和[(IMes E)2 Cu] BF 4,E = S(7);E = Se(8)是通过用相应的咪唑啉-2-硫属元素酮将铜(II)还原为铜(I)而形成的。X射线结构分析的7种化合物(1-3和5-8)表明,铜(我)离子是在一个完美的线性协调,同时4是在准-线性几何形状。分子2,4,6和8是该第一结构表征均配型铜(我)s