Regioselective and Chemoselective Reduction of Naphthols Using Hydrosilane in Methanol: Synthesis of the 5,6,7,8-Tetrahydronaphthol Core
作者:Yuan He、Jinghua Tang、Meiming Luo、Xiaoming Zeng
DOI:10.1021/acs.orglett.8b01273
日期:2018.7.20
A regioselective and chemoselective method for catalytic synthesis of biologically interesting 5,6,7,8-tetrahydronaphthols by reduction of naphthols was described. The side aromatic hydrocarbons in naphthols were site-selectively reduced, using hydrosilanes in methanol, allowing for retaining functional phenol scaffolds intact. It presents a rare example of using low-cost and air-stable hydrosilane
Enantiodivergent Atroposelective Synthesis of Chiral Biaryls by Asymmetric Transfer Hydrogenation: Chiral Phosphoric Acid Catalyzed Dynamic Kinetic Resolution
作者:Keiji Mori、Tsubasa Itakura、Takahiko Akiyama
DOI:10.1002/anie.201606063
日期:2016.9.12
enantiodivergent synthesis of chiral biaryls by a chiral phosphoric acid catalyzedasymmetrictransferhydrogenation reaction. Upon treatment of biaryl lactols with aromatic amines and a Hantzsch ester in the presence of chiral phosphoric acid, dynamic kinetic resolution (DKR) involving a reductive amination reaction proceeded smoothly to furnish both R and S isomers of chiral biaryls with excellent enantioselectivities
Mechanochemical arylative detrifluoromethylation of trifluoromethylarenes
作者:Satenik Mkrtchyan、Mohanad Shkoor、Sehrish Sarfaraz、Khurshid Ayub、Viktor O. Iaroshenko
DOI:10.1039/d3ob00787a
日期:——
ytterbium oxide (Yb2O3)-mediated defluorinative cyanation of trifluoromethylarenes. In addition, we describe a facile mechanochemically facilitated and nickel-catalyzed decyanative arylation of benzonitriles to access biphenyls. Combining both processes in a one-pot multicomponent protocol to achieve a concise direct arylative detrifluoromethylation of ArCF3 is described herein. This work is the first hitherto