Bifunctional complexes bearing N-heterocyclic carbene (NHC) ligands functionalized with hydroxy or amine groups were synthesized to measure the beneficial effect of different modes of metal–ligand cooperation in the acceptorless dehydrogenation of alcohols. In comparison to complexes with an amine moiety, hydroxy-functionalized iridium catalysts showed superior activity. In contrast to alcohols, 1
合成了带有羟基或胺基官能团的带有N-杂环卡宾(NHC)
配体的双官能团配合物,以测量不同模式的
金属-
配体配合在醇的无受体脱氢中的有益作用。与具有胺部分的配合物相比,羟基官能化的
铱催化剂显示出优异的活性。与醇相反,在不涉及脱氢过程的情况下,使1,4
-二醇环化以得到相应的
四氢呋喃。为了使这些类型的配合物中的“ OH效应”合理化,进行了机械研究。