Substituent Effects on Stoichiometric and Catalytic Cleavage of Carbon–Nitrogen Bonds in Aniline Derivatives by Ruthenium–Phosphine Complexes
作者:Tetsuro Koreeda、Takuya Kochi、Fumitoshi Kakiuchi
DOI:10.1021/om3011855
日期:2013.1.28
derivatives with ruthenium complexes was examined. The reaction of o-acylanilines with RuH2(CO)(PPh3)3 (1) or an activated ruthenium species formulated as “Ru(CO)(PPh3)3” (4) gave amido hydrido complexes 3 and aryl amido complexes 6 formed via N–H and C–N bond cleavage, respectively. Addition of olefins, such as vinylsilanes, accelerates the C–N bond cleavage. The aryl amido complexes 6 can provide the C–N
检查了各种邻氰基苯胺衍生物与钌配合物的反应性。邻氰基苯胺与RuH 2(CO)(PPh 3)3(1)或配制成“ Ru(CO)(PPh 3)3 ”(4)的活化钌物种的反应,得到酰胺氢化物络合物3和芳基酰胺络合物6分别通过N–H和C–N键断裂形成。烯烃(如乙烯基硅烷)的添加会加速C–N键的裂解。经芳基硼酸酯处理后,芳基酰胺基络合物6可以提供C–N芳基化产物。的相对反应性通过竞争实验研究了带有各种取代基的邻乙酰基苯胺,发现给电子取代基在化学计量和催化反应中均增加了C–N键裂解的相对容易程度。在此观察到的趋势与先前报道的钽介导的C–N键断裂观察到的趋势不同。