A three-component Minisci reaction coupling of 1,3-dicarbonylcompounds with vinyl ethers and quinolines or isoquinolines under visible light is developed. The 1,3-dicarbonylcompound undergoes single-electron oxidation to afford an electrophilic 1,3-dicarbonyl radical under visible light irradiation. Due to the polarity of the free radical, the electrophilic radical adds to the electron-rich olefin
Bromide-Mediated C–H Bond Functionalization: Intermolecular Annulation of Phenylethanone Derivatives with Alkynes for the Synthesis of 1-Naphthols
作者:Tao Lu、Ya-Ting Jiang、Feng-Ping Ma、Zi-Jing Tang、Liu Kuang、Yu-Xuan Wang、Bin Wang
DOI:10.1021/acs.orglett.7b03186
日期:2017.12.1
formation of polysubstituted 1-naphthols. The usage of readily available bromine catalyst, broad substrate scope, and mild conditions make this protocol very practical. Mechanistic investigations reveal that the bromination of phenylethanone derivatives occurs to yield bromo-substituted intermediates, which react in situ with alkynes to furnish the desired 1-naphthols.
Process for reducing 3-heteroaryl-3-oxopropionic acid derivatives
申请人:——
公开号:US20030225274A1
公开(公告)日:2003-12-04
The present invention relates to a process for preparing stereoisomerically enriched 3-heteroaryl-3-hydroxycarboxylic esters by reducing 3-heteroaryl-3-oxocarboxylic esters in the presence of ruthenium-containing catalysts.
Verfahren zur Reduktion von 3-Heteroaryl-3-Oxopropionsäurederivaten
申请人:BAYER AG
公开号:EP1340746A1
公开(公告)日:2003-09-03
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung stereoisomerenangereicherter 3-Heteroaryl-3-hydroxycarbonsäureester durch Reduktion von 3-Heteroaryl-3-oxocarbonsäureestern in Gegenwart von Ruthenium enthaltenden Katalysatoren.