甲基环戊二烯酸钾与甲磺酸甲酯的反应产生摩尔比为1.3:1.0的1-甲酰基-2-甲基环戊二烯和1-甲酰基-3-甲基环戊二烯的盐。在环境温度下,每种异构体均包含两个构象体。通过2- D 1 H NMR(COSY和NOESY)确认产物的身份和关系。锡尔酸(内-三环[5,2,1,0 2,6 ] -4,8-二羧酸-癸-3,8-二烯)被转化为单体二甲酰胺和腈的al盐。通过(盐与克莱默化合物{(C 2 H 4)2,RhCl} 2的反应高产率地制备双(乙烯)-铑(I)衍生物。。比较了烯烃的旋转势垒(ΔG #),并讨论了环滑的NMR证据。混合化合物(CO)(C 2 H ^ 4)的Rh(η 5 -C 5 H ^ 4 CHO)示出了对于任何简单铑最低报烯烃旋转屏障(I)的Cp -monocyclic系统。
In a combined theoretical and experimental study, an efficient catalytic reaction featuring epoxide opening and tetrahydrofuran formation through homolytic substitution reactions at C-O and Ti-O bonds was devised. The performance of these two key steps of the catalytic cycle was studied and could be adjusted by modifying the electronic properties of the catalysts through introduction of electron-donating or -withdrawing substituents to the titanocene catalysts. By regarding both steps as single electron versions of oxidative addition and reductive elimination, a mechanism-based platform for the design of catalysts and reagents-for electron transfer reactions evolved that opens broad perspectives for further investigations.