in 6 are readily cleaved on addition of pyridinium tribromide, and the resulting product is the tribrominated iridabenzofuran Ir(C7H5OOMe-7}Br-6}Br-4}Br-2})Br(PPh3)2 (7). These regioselective mono-, di-, and trifunctionalization reactions of iridabenzofurans have been studied by DFT calculations, and the derived condensed Fukui functions have been used to rationalize the preferred sites for electrophilic
阳离子iridacyclopentadiene配合物[Ir(C 4 H 4)(NCMe)(CO)(PPh 3)2 ] [CF 3 SO 3 ](1)与
丙炔酸甲酯之间的反应生成阳离子
铱伊达
苯并呋喃[Ir(C 7 H 5 O OMe-7})(CO)(PPh 3)2 ] [CF 3 SO 3 ](2)的产率很高。在用
氯化物处理2时,羰基
配体被置换,相应的中性
铱苯并呋喃Ir(C 7 H 5 O OMe-7})Cl(PPh 3)2(3)形成。iridabenzofurans 2和3的稠合
金属环仅带有一个取代基(OMe),因此这些化合物非常适合用于亲电子芳族取代反应的研究。用三
溴化
吡啶鎓对阳离子2进行
溴化反应,得到单
溴化的
铱苯并呋喃[Ir(C 7 H 5 O OMe-7} Br-6})(CO)(PPh 3)2 ] [CF 3 SO 3 ](4)只。用相同的试剂对中性3进行
溴化,得到二
溴化的依立达
苯并呋喃Ir(C