The synthesis and characterisation of a range of new 6- and 7-membered expanded ring N-heterocyclic carbene (NHC) complexes of zero valent palladium dvtms (divinyltetramethyldisiloxane) 8–14 is reported, with the first comparative catalytic study probing the effects of large ring N-heterocyclic carbene ligands (6-Mes and 7-Mes) with their analogous 5-membered derivative (IMes) on catalytic performance
一系列零价
钯dvtms的新型6元和7元扩环N-杂环卡宾(NHC)配合物的合成与表征(二
乙烯基四甲基二
硅氧烷)报道了8–14,第一项比较催化研究探索了大环N-杂环卡宾
配体(6-Mes和7-Mes)及其类似的5元衍
生物(IMes)对催化性能的影响。[Pd(NHC)(dvtms)]配合物的催化性能在Mizoroki-Heck偶联反应中进行了评估。
4-溴苯乙酮 和
丙烯酸正丁酯,提供了有效而有效的比较,比较了环尺寸和空间拥挤对碳-碳交叉偶联反应中催化活性的影响。