Rh(1,3-bis(2,4,6-trimethylphenyl)-3,4,5,6-tetrahydropyrimidin-2-ylidene)(COD) tetrafluoroborate, an unsymmetrical Rh-homoazallylcarbene: synthesis, X-ray structure and reactivity in carbonyl arylation and hydrosilylation reactions
作者:Nicolas Imlinger、Klaus Wurst、Michael R. Buchmeiser
DOI:10.1016/j.jorganchem.2004.11.057
日期:2005.10
The synthesis of novel Rh(1,3-bis(2,4,6-trimethylphenyl)-3,4,5,6-tetrahydropyrimidin-2-ylidene)(COD) tetrafluoroborate (1, COD = η4-1,5-cyclooctadiene) is described. The N-heterocyclic carbene acts as a bidentate ligand with the carbene coordinating to the Rh(I) center and an arene group acting as a homoazallyl ligand. 1 was used in various carbonyl arylation and hydrosilylation reactions allowing
新颖的Rh的合成(1,3-双(2,4,6-三甲基苯基)-3,4,5,6-四氢嘧啶-2-亚基)(COD)四氟硼酸盐(1,COD =η 4 -1,5- -环辛二烯)。的Ñ -杂环卡宾充当与卡宾配位到的Rh(I)中心和一个芳烃基团充当homoazallyl配体的二齿配体。1被用于各种羰基芳基化和氢化硅烷化反应中,从而以前所未有的选择性和效率形成所需的产物。因此,获得了高达2000的周转数(TONs)。