Olefin cross-metathesis/Suzuki–Miyaura reactions on vinylphenylboronic acid pinacol esters
摘要:
A series of alkenyl phenylboronic acid pinacol esters has been synthesized via an olefin cross-metathesis reaction of vinylphenylboronic acid pinacol ester derivatives. After catalytic hydrogenation, the resulting boronates were coupled via a microwave-mediated Suzuki-Miyaura reaction to afford a library of biarylethyl aryl and biarylethyl cycloalkyl derivatives. A complementary reaction sequence involved an initial Suzuki-Miyaura coupling. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
Novel Carbazole‐Based<i>N</i>‐Heterocyclic Carbene Ligands to Access Synthetically Relevant Stilbenes in Pd‐Catalyzed Coupling Processes
作者:Tejpalsingh Ramsingh Girase、Anant R. Kapdi
DOI:10.1002/asia.201900419
日期:2019.8
A series of new carbazole‐based N‐heterocyclic carbene (NHC) ligands have been synthesized in a simple and facile synthetic route and subsequently used in a Pd/carbazole‐based NHC catalytic system, which was found to be effective in catalyzing Heck reactions to provide substituted stilbene derivatives in good yields. Several bioactive stilbenes, including pterostilbene, pinosylvin, trimethoxy resveratrol