Bioinspired Copper(I) Complexes that Exhibit Monooxygenase and Catechol Dioxygenase Activity
作者:Aline Arnold、Ramona Metzinger、Christian Limberg
DOI:10.1002/chem.201405155
日期:2015.1.12
New tripodal ligand L2 featuring three different pyridyl/imidazolyl‐based N‐donor units at a bridgehead C atom, from which one of the imidazolyl units is separated by a phenylene linker, was synthesized and investigated with regards to copper(I) complexation. The resulting complex [(L2)Cu]OTf (2OTf), the known complex [(L1)Cu]OTf (1OTf; L1 differs from L2 in that it lacks the phenylene spacer) and
合成并研究了新的三脚架配体L2,该配体在桥头C原子上具有三个不同的基于吡啶基/咪唑基的N供体单元,其中一个咪唑基单元被亚苯基连接基隔开,并就铜(I)络合进行了研究。生成的络合物[(L2)Cu] OTf(2 OTf),已知络合物[(L1)Cu] OTf(1 OTf;L1与L2的不同之处在于它缺少亚苯基间隔基)和[(L3)Cu] OTf(3 OTf)是由已知的具有吡啶基,吡唑基和咪唑基供体的手性,三脚架,N供体配体制备的,经测试用作O 2氧化2,4-二叔丁基苯酚钠(NaDTBP)的催化剂。确实,他们介导了NaDTBP的氧化作用,主要产生了相应的儿茶酚酸和醌(Q)。配合物1 OTf,2 OTf和3 OTf均不优于其他配合物,因为产率相当,并且如果同时添加苯酚DTBP可以保证质子的存在氧化也可以催化进行。对于所有配合物,在一定条件下(浓溶液,高NaDTBP含量),化学计量氧化也被发现也产生典型的产物,该产物通常被金属介导的邻苯二酚与O