Rhodium(III)-Catalyzed Dehydrogenative Heck Reaction of Salicylaldehydes
作者:Zhuangzhi Shi、Nils Schröder、Frank Glorius
DOI:10.1002/anie.201203224
日期:2012.8.6
RhIII‐catalyzed dehydrogenativeHeckreaction (DHR) of salicylaldehydes with different classes of olefins extends the oxidative Heckreaction to aldehyde CH bonds. Several structural motifs similar to natural products and bioactive molecules such as aurones, flavones, 2′‐hydroxychalcones, and flavanones could be efficiently produced. Initial mechanistic studies give insight into the reaction mechanism.
Synthesis of (1R,2R)-DPEN-derived triazolium salts and their application in asymmetric intramolecular Stetter reactions
作者:Min-Qiang Jia、Yi Li、Zi-Qiang Rong、Shu-Li You
DOI:10.1039/c1ob00025j
日期:——
A series of novel chiral triazolium salts has been synthesized from readily available (1R,2R)-DPEN and found to be efficient for the enantioselective intramolecular Stetter reaction. With 10 mol% of the catalyst, the intramolecular Stetter reaction was realized in excellent yields with up to 97% ee.