Synthesis and characterization of Markó-type (NHC)Pt(dvtms) complexes and their evaluation in the hydrosilylation reaction of alkenes
作者:Michael J. Sauer、Leon F. Richter、Jeff Offorjindu、Robert M. Reich、Fritz E. Kühn
DOI:10.1016/j.jorganchem.2023.122995
日期:2024.2
accessible using Karstedt's catalyst [Pt2(dvtms)3], the respective azolium salts (L1-7) and potassium tert-butoxide. Comprehensive characterization by NMR spectroscopy (1H, 13C, 29Si, 195Pt), SC-XRD and CHNS analysis is presented. The hydrosilylation reactions of oct-1-ene or MMVi with MDHM, respectively, where the latter mimics the cross linking of silicones, are efficiently catalyzed at remarkable low
制备了一系列结构为 (NHC)Pt(dvtms) 的 Markó 型配合物(dvtms = 1,1,3,3-四甲基-1,3-二乙烯基二硅氧烷,NHC = N-杂环卡宾,Im = 咪唑,Trz = 三唑;NHC = i PrIm ( 1 )、PhIm ( 2 )、2-PyIm ( 3 )、MesTrzMeIm ( 4 ) Mes(Me)Trz ( 5 ) MeIm ( 6 )、MesIm( 7 )),其中5为首次报道了异常的1,2,3-三唑-5-亚基Pt(0)络合物。使用 Karstedt 催化剂 [Pt 2 (dvtms) 3 ]、相应的唑鎓盐 ( L1-7 ) 和叔丁醇钾,可以轻松获得所有这些化合物。提出了通过 NMR 光谱(1 H、13 C、29 Si、195 Pt)、SC-XRD 和 CHNS 分析进行的综合表征。辛-1-烯或 MM Vi分别与 MD H M 的氢化硅烷化反应(后者模拟有机硅的交联)在