Palladium-Catalyzed Conjugate Addition of Arylboronic Acids to β,β-Disubstituted Enones in Aqueous Media: Formation of Bis-benzylic and <i>ortho</i>-Substituted Benzylic Quaternary Centers
作者:Ryan Van Zeeland、Levi M. Stanley
DOI:10.1021/acscatal.5b01272
日期:2015.9.4
Palladium-catalyzed conjugate addition of arylboronic acids to β,β-disubstituted enones in aqueousmedia is reported. Additions of a wide range of arylboronic acids to β,β-disubstituted enones occur to form ketone products bearing benzylic all-carbon quaternary centers. These reactions are promoted by a simple catalyst prepared from palladium trifluoracetate and 2,2′-bipyridine. The use of aqueous sodium trifluoracetate
Enantioselective, Palladium-Catalyzed Conjugate Additions of Arylboronic Acids to Form Bis-benzylic Quaternary Stereocenters
作者:Abhishek A. Kadam、Arkady Ellern、Levi M. Stanley
DOI:10.1021/acs.orglett.7b01825
日期:2017.8.4
We report enantioselective, palladium-catalyzed conjugate additions of arylboronic acids to β-aryl, β,β-disubstituted enones to generate ketones containing bis-benzylic quaternarystereocenters. A catalyst generated from palladium trifluoroacetate and (S)-4-tert-butyl-2-(2-pyridyl)oxazoline ligand ((S)-t-BuPyOx) promotes conjugate additions of a wide range of arylboronic acids to a variety of β-aryl
Disclosed herein are methods of treatment and prevention of diseases and disorders related to estrogen receptors comprising administering novel di-aromatic compounds to patients in need thereof.