An Organocatalytic Cascade Approach toward Polysubstituted Quinolines and Chiral 1,4-Dihydroquinolines-Unanticipated Effect of N-Protecting Groups
作者:Xinshuai Zhang、Xixi Song、Hao Li、Shilei Zhang、Xiaobei Chen、Xinhong Yu、Wei Wang
DOI:10.1002/anie.201202161
日期:2012.7.16
of a divergent organocatalytic aza‐Michael/aldol cascade process towardquinolines and 1,4‐dihydroquinolines depends on the choice of the N‐protecting group (see scheme; TEA=triethylamine, TMS=trimethylsilyl). Use of an electron‐donating sulfonyl group results in an unanticipated aza‐Michael/aldol/aromatization cascade to give polysubstitutedquinolines (right). In contrast, chiral 1,4‐dihydroquinolines
A convenient and efficient C–OH bond activation, PdCl<sub>2</sub>(PPh<sub>3</sub>)<sub>2</sub>catalyzed, C–C bond formation of tautomerizable quinolinones with the aid of BOP reagent and boronic acids
作者:Yadavalli Suneel Kumar、C. Dasaradhan、Kamalakannan Prabakaran、Fazlur-Rahman Nawaz Khan、Euh Duck Jeong、Eun Hyuk Chung、Hyun Gyu Kim Hyun Gyu Kim
DOI:10.1039/c4ra05161k
日期:——
C–C bond formation of tautomerizable quinolinones. C–OH bond activation using BOP reagent and boronic acids.