General Metal-Free Baeyer–Villiger-Type Synthesis of Vinyl Acetates
摘要:
Ozone, a cheap, stable, and nonhazardous oxidizing reagent, transforms alpha,beta-unsaturated ketones of defined stereochemistry into their corresponding vinyl acetates through a Baeyer-Villiger reaction. This process is general and straightforward, tolerating a wide range of functional groups.
Stereoselective Synthesis of Vinylboronates by Rh‐Catalyzed Borylation of Stereoisomeric Mixtures
作者:Shenhuan Li、Jie Li、Tianlai Xia、Wanxiang Zhao
DOI:10.1002/cjoc.201800575
日期:2019.5
The stereoselective preparation of vinylboronates via rhodium‐catalyzed borylation of E/Z mixtures of vinyl actetates is described, and this method was also extended to synthesis of vinyldiboronates. These transformations feature high functional group compatibility and mild reaction conditions. Control experiments support a mechanism that involved a Rh‐catalyzed borylation‐isomerization sequence. The
Palladium catalysed β-selective oxidative Heck reaction of an electron-rich olefin
作者:Lingkui Meng、Chao Liu、Wei Zhang、Chao Zhou、Aiwen Lei
DOI:10.1039/c3cc47045h
日期:——
A palladium catalysed oxidative beta-arylation of an electron-richolefin is described. The reaction was under mild conditions; meanwhile, additives and directing groups are not needed. Various arylboronic acids worked well under the standard conditions.