Pd-catalyzed oxidative acylation of 2-phenoxypyridines with alcohols via C–H bond activation
作者:Minyoung Kim、Satyasheel Sharma、Jihye Park、Mirim Kim、Yeonhee Choi、Yukyoung Jeon、Jong Hwan Kwak、In Su Kim
DOI:10.1016/j.tet.2013.06.008
日期:2013.8
A palladium-catalyzedoxidativeacylation of 2-phenoxypyridines with benzylic and aliphatic alcohols via C–H bondactivation is described. This protocol represents direct access to biologically active ortho-acylphenol derivatives, and provides new opportunities to use readily available alcohols as starting materials for catalytic acylation reactions.
A Facile Route to<i>Ortho</i>-Hydroxyanilnes through an Ir<sup>III</sup>-Catalyzed Direct C−H Amidation of 2-Phenoxypyridines
作者:Lianhui Wang、Zi Yang、Mengqi Yang、Miaodou Tian、Changsheng Kuai、Xiuling Cui
DOI:10.1002/asia.201701028
日期:2017.10.5
A highly efficient and regioselective IrIII‐catalyzed C−H amidation of 2‐phenoxypyridines has been developed by using sulfonyl azides as an amino source. The amidated products were provided in good‐to‐excellent yields with broad functional‐group tolerance. Furthermore, the 2‐pyridyl moiety in the amidated products could be readily removed, thus offering an efficient route to synthetically useful ortho‐hydroxyanilnes
Rh<sup>III</sup>-Catalyzed Olefination of 2-Aryloxypyridines Using 2-Pyridyloxyl as the Removable Directing Group
作者:Arun Jyoti Borah、Guobing Yan、Lianggui Wang
DOI:10.1002/ejoc.201500530
日期:2015.7
An efficient RhIII-catalyzed trans selective ortho-olefination of 2-aryloxypyridines has been developed. The catalytic system is very effective for olefination of differently substituted 2-aryloxypyridines with acrylates, acrylamide and styrenes and exhibits broad compatibility with assorted olefinic coupling partners. Although acrylates and acrylamide give rise to trans-olefinated products in MeOH
作者:Shengjun Ni、Matic Hribersek、Swarna K. Baddigam、Fredric J. L. Ingner、Andreas Orthaber、Paul J. Gates、Lukasz T. Pilarski
DOI:10.1002/anie.202010202
日期:2021.3.15
The mechanochemical, solvent‐free, highly regioselective, rhodium‐catalyzed C−Hmethylation of (hetero)arenes is reported. The reaction shows excellent functional‐group compatibility and is demonstrated to work for the late‐stage C−Hmethylation of biologically active compounds. The method requires no external heating and benefits from considerably shorter reaction times than previous solution‐based