C-N Coupling of 1,2-Dihydro-2,2,4-trimethylquinoline Derivatives via a Silver(I)-Catalyzed Direct Functionalization of a C-H Bond
作者:Jean Fotie、Jessica L. Rhodus、Hashem A. Taha、Carolyn S. Reid
DOI:10.1002/hc.21055
日期:2012.11
effect of different silver salts on the reaction was also investigated, and the obtained results suggest that silver ions effectively catalyzed the formation of a C–N bond under these mild conditions. This represents one of the rare reports on the silver-catalyzed C–N bond formation through a coupling of a secondary amine and an activated aromatic system, via a direct C–H functionalization. Theoretical studies
两个C,N-连接的二聚体1,2-dihydro-2,2,4-trimethylquinolines,即6-chloro-1-(6-chloro-1,2-dihydro-2,2,4-trimethylquinolin-8-yl )-1,2-dihydro-2,2,4-trimethylquinoline (3a) 和 6-ethoxy-1-(6-ethoxy-1,2-dihydro-2,2,4-trimethylquinolin-8-yl)-1 ,2-二氢-2,2,4-三甲基喹啉 (3b) 是通过其相应单体的银催化二聚反应制备的。还研究了不同银盐对反应的影响,所得结果表明银离子在这些温和条件下有效催化了 C-N 键的形成。这代表了银催化的 C-N 键形成的罕见报道之一,通过仲胺和活化的芳香系统的偶联,通过直接的 C-H 官能化。