Palladium‐Catalyzed Chemoselective Mono‐α‐Arylation of O‐Protected Hydroxyacetone with <i>Ortho</i>‐Substituted (Hetero)aryl Electrophiles
作者:Joshua W. M. MacMillan、Travis Lundrigan、Giulio Volpin、Sherif J. Kaldas、Philipp M. Holstein、Mark James Ford、Nicolas Guimond、Mark Stradiotto
DOI:10.1002/adsc.202300566
日期:2023.8.10
The mono-α-arylation of 2-tetrahydropyranyl O-protection of hydroxyacetone is reported. When using a catalyst system comprised of [Pd(cinnamyl)Cl]2 and the JosiPhos ligands PhPF-tBu or (4-CF3Ph)PF-tBu, such transformations are achieved with ortho-substituted aryl bromides and triflates in the presence of potentially contending functionalities including chloro groups.
报道了羟基丙酮的 2-四氢吡喃基 O-保护的单-α-芳基化。当使用由[Pd(肉桂基)Cl] 2和 JosiPhos 配体 PhPF- t Bu 或 (4-CF 3 Ph)PF -t Bu 组成的催化剂体系时,这种转化是通过邻位取代的芳基溴化物和三氟甲磺酸酯实现的。存在潜在竞争的官能团,包括氯基团。