A monomer–dimer nanoswitch that mimics the working principle of the SARS-CoV 3CLpro enzyme controls copper-catalysed cyclopropanation
作者:Soumen De、Susnata Pramanik、Michael Schmittel
DOI:10.1039/c4dt01508h
日期:——
the presence of copper(I) ions, the open triangular framework (OPEN-I) firmly closes to a catalytically inactive heteroleptic [Cu(phen)(terpy)]+ complex (CLOSE). Reversible switching between CLOSE and OPEN-I states was demonstrated by successive addition and removal of Cu+. In contrast, after addition of iron(II) ions to the CLOSE state a bishomoleptic dimeric [Fe(terpy)2]2+ complex is formed with the
在其末端具有三联吡啶和被保护的菲咯啉的三角形框架构成了一个打开/关闭的纳米开关,该开关可通过化学输入进行切换。在铜的存在下(我)离子,开放三角形框架(OPEN-I)牢固地关闭,以一个催化失活的杂[铜(phen)的(三联吡啶)] +络合物(CLOSE)。通过连续添加和去除Cu +可以证明CLOSE和OPEN-I状态之间可逆切换。与此相反,添加铁后(II)离子到CLOSE状态的bishomoleptic二聚体的[Fe(三联吡啶)2 ] 2+复合物与铜(形成我)离子放置在菲咯啉腔(OPEN-II)中。由于其配位的不饱和[Cu(Phen)] +位,二聚铁络合物能够在使用重氮乙酸乙酯的Z-环辛烯的环丙烷化反应中充当催化剂。