Silver‐Triggered Activity of a Heterogeneous Palladium Catalyst in Oxidative Carbonylation Reactions
作者:Man‐Bo Li、Ying Yang、Abdolrahim A. Rafi、Michael Oschmann、Erik Svensson Grape、A. Ken Inge、Armando Córdova、Jan‐E. Bäckvall
DOI:10.1002/anie.202001809
日期:2020.6.22
A silver‐triggered heterogeneous Pd‐catalyzed oxidative carbonylation has been developed. This heterogeneous process exhibits high efficiency and good recyclability, and was utilized for the one‐pot construction of polycyclic compounds with multiple chiral centers. AgOTf was used to remove chloride ions in the heterogeneouscatalyst Pd‐AmP‐CNC, thereby generating highly active PdII, which results in
Synthesis of multi-substituted dihydrofurans <i>via</i> palladium-catalysed coupling between 2,3-alkadienols and pronucleophiles
作者:Hirokazu Tsukamoto、Kazuya Ito、Takayuki Doi
DOI:10.1039/c8cc02589d
日期:——
Multi-substituted dihydrofurans were obtained from a palladium-catalysed coupling reaction between 2,3-alkadienols and ketones bearing an electron-withdrawing group at the α-position. Methanol as a solvent was essential for the initial dehydrative substitution to suppress the competitive hydroalkylation of the diene moiety. The substitution would be followed by intramolecular hydroalkoxylation under