Enantioselective Synthesis of 4-Cyanotetrahydroquinolines via Ni-Catalyzed Hydrocyanation of 1,2-Dihydroquinolines
作者:Mingdong Jiao、Jihui Gao、Xianjie Fang
DOI:10.1021/acs.orglett.0c03171
日期:2020.11.6
A Ni-catalyzed asymmetric hydrocyanation that enables the formation of 4-cyanotetrahydroquinolines in good yields with excellent enantioselectivities is presented herein. A variety of functional groups are well-tolerated, and a gram-scale reaction supports the synthetic potential of the transformation. Additionally, several crucial intermediates for pharmaceutically active agents, including a PGD2
Regioselective 1,2-Hydrosilylation of N-Heterocycles Catalyzed by a Ruthenium Olefin Metathesis Catalyst
作者:Xinyuan Ma、Steven P. Nolan
DOI:10.1021/acs.organomet.3c00196
日期:2023.8.14
First-generation ruthenium–indenylidene olefin metathesiscomplex catalyzes the 1,2-hydrosilylation reaction to access dihydroquinoline derivatives with high regioselectivity under mild conditions. The ruthenium–indenylidenecomplex was shown to have excellent catalytic efficiency when the challenging Ph2SiH2 hydride donor is used. The reaction is efficient at 0.25–1 mol % catalyst loadings with a