Protecting-Group-Free Site-Selective Reactions in a Metal–Organic Framework Reaction Vessel
作者:Michael. T. Huxley、Alexandre Burgun、Hanieh Ghodrati、Campbell J. Coghlan、Anthony Lemieux、Neil R. Champness、David M. Huang、Christian J. Doonan、Christopher J. Sumby
DOI:10.1021/jacs.8b02896
日期:2018.5.23
bis-triazole side-product. Stepwise insights into conversions of the MOF reaction vessel were obtained by X-ray crystallography, demonstrating that the reactive sites are "isolated" from one another. Single-crystal to single-crystal transformations of the Mn(I)-metalated material 1·[Mn(CO)3(H2O)]Br to the corresponding azide species 1·[Mn(CO)3N3] with sodium azide, followed by a series of [3+2] azide-alkyne
复杂分子的合成通常需要位点选择性有机转化。通过采用定制的金属有机骨架(MOF,1·[Mn(CO)3N3]),其中配位的叠氮化物阴离子精确定位在一维通道内,我们提出了一种将二炔转化为炔官能化的策略三唑类。作为这种方法的说明,1,7-octadiyne-3,6-dione 化学计量地提供单“点击”产物 N-methyl-4-hex-5'-ynl-1',4'-dione-1, 2,3-三唑,只有微量的双三唑副产物。通过 X 射线晶体学获得对 MOF 反应容器转化的逐步洞察,证明反应位点彼此“隔离”。Mn(I) 金属化材料 1·[Mn(CO)3(H2O)]Br 与叠氮化钠的单晶到单晶转变为相应的叠氮化物 1·[Mn(CO)3N3],然后是报道了一系列 [3+2] 叠氮化物-炔烃环加成反应。“点击”产物从多孔材料中的最终释放是通过用 MeBr 进行 N-烷基化来实现的,其再生起始 MOF 1·[Mn(CO)3(H2O)]Br