Stereoselective Synthesis of Highly Substituted Enamides by an Oxidative Heck Reaction
作者:Yu Liu、Dan Li、Cheol-Min Park
DOI:10.1002/anie.201101550
日期:2011.8.1
Functionalization of enamides under Heck conditions has been limited to those with unsubstituted vinyl groups. By tuning reaction parameters that allow for the balance between stability and reactivity of reactants, the oxidativeHeck cross‐coupling to produce highlysubstitutedenamides in good to excellent yields was achieved (see scheme).
Arylations of Substituted Enamides by Aryl Iodides: Regio- and Stereoselective Synthesis of (<i>Z</i>)-β-Amido-β-Arylacrylates
作者:Quan Gou、Bin Deng、Hongbin Zhang、Jun Qin
DOI:10.1021/ol402215f
日期:2013.9.6
Arylations of substituted enamides by aryl iodides were achieved for the first time via an unusual PdCl2(COD)/Ag3PO4 catalytic system. A broad range of (Z)-β-amido-β-arylacrylates were prepared regio- and stereoselectively in a highly efficient manner.
经由不寻常的PdCl 2(COD)/ Ag 3 PO 4催化系统,首次实现了芳基碘取代的酰胺的芳基化。以高效方式在区域和立体选择性上制备了多种(Z)-β-酰胺基-β-芳基丙烯酸酯。
PdCl2(MeCN)2 catalyzes amidation of electron-deficient alkenes leading to enamides, where cyclic carbamates are more reactive than cyclic amides as nucleophiles.
Slopianka, Marion; Gossauer, Albert, Liebigs Annalen der Chemie, 1981, # 12, p. 2258 - 2265