Backbone Thio-Functionalized Imidazol-2-ylidene–Metal Complexes: Synthesis, Structure, Electronic Properties, and Catalytic Activity
作者:Vedhagiri Karthik、Irshad Ahmad Bhat、Ganapathi Anantharaman
DOI:10.1021/om400585b
日期:2013.12.9
metal–halogen exchange reaction of 1-methyl-4,5-diiodoimidazole (1) followed by a quaternization reaction with methyl iodide. The metal–carbene complexes 6, 8, and 10 were synthesized conveniently through three different routes, namely, (a) an in situ generated carbene route, (b) a transmetalation method, and (c) direct reaction with a basic metal precursor, and structurally characterized. Subsequently the
已经报道了制备在主链上具有含杂原子的官能团的咪唑鎓盐的新的合成途径。因此,主链双thiofunctionalized咪唑鎓盐(第一实施例4)通过1-甲基-4,5- diiodoimidazole(顺序金属-卤素交换反应而制备1,接着用甲基碘季铵化反应)。金属-卡宾配合物6,8,和10可以通过三种不同的途径方便地合成它们,即(a)原位生成的卡宾路线,(b)过渡金属化方法和(c)与碱性金属前体直接反应,并进行结构表征。随后的新的电特性来制备1,3-二甲基-4,5-双(苯硫基) -咪唑-2-亚基((SPH)2 IME)进行了研究,通过测量羰基伸缩相应的[Ir (的频率SPH)2 IME}(CO)2(Cl)的]络合物。另外,空气稳定的钯- NHC络合物10被发现是催化活性在铃木-宫浦偶合芳基溴化物的反应。