The combination of Pd(OAc)2 and DABCO (triethylenediamine) was observed as an efficient catalytic system for the Heck cross-coupling reaction. In the presence of Pd(OAc)2 and DABCO, a number of ArX (X = I, Br, and Cl) were coupled with olefins efficiently and selectively to afford the corresponding unsymmetric internal olefins in good to excellent yields. Furthermore, the Pd(OAc)2/DABCO-catalyzed Heck cross-coupling reaction provided high TONs up to 1,000,000.
Pd(OAc)2和
DABCO(
三乙烯二胺)的组合被观察到是 Heck 交叉耦合反应的高效催化系统。在 Pd(OAc)2 和
DABCO 的存在下,多种 ArX(X = I, Br, Cl)有效地且选择性地与烯烃耦合,生成了相应的非对称内部烯烃,产率良好至优秀。此外,Pd(OAc)2/
DABCO 催化的 Heck 交叉耦合反应提供高达 1,000,000 的高转换次数(TON)。