Rhodium-catalyzed ortho C–H bond activation of arylamines for the synthesis of quinoline carboxylates
作者:Sunita K. Gadakh、Soumen Dey、A. Sudalai
DOI:10.1039/c6ob00170j
日期:——
The rhodium catalyzed annulation of anilines with alkynic esters allowing for the high-yieldsynthesis of quinoline carboxylates with excellent regioselectivity is described. This unprecedented reaction employs either formic acid as the C1 source and reductant or copper(II) as the oxidant and is proposed to proceed via rhodacycle of in situ generated amide and enamine ester followed by ortho C–H activation
[EN] A ONE POT SYNTHESIS OF 3-SUBSTITUTED QUINOLINE CARBOXYLATES AND ITS DERIVATIVES<br/>[FR] SYNTHÈSE MONOTOPE DE QUINOLÉINE CARBOXYLATES SUBSTITUÉS EN POSITION 3 ET DE LEURS DÉRIVÉS
申请人:COUNCIL SCIENT IND RES
公开号:WO2015198349A1
公开(公告)日:2015-12-30
The present invention provides a one pot, simple, cost effective and industrially feasible catalytic synthesis of quinolines or substituted quinolines from anilines with yield >80% yield. The present invention also discloses a process for the synthesis of oxolinic acid using quinolines with yield > 45%.
4-unsubstituted quinoline-3-carboxylic acid ethyl esters via a domino process is described. The synthesis employs arylmethyl azides as the precursor which undergoes an acid-promoted rearrangement to give an N-aryl iminium ion. Following the addition with ethyl 3-ethoxyacrylate, intramolecular electrophilic aromaticsubstitution, elimination and subsequent oxidation, the quinoline products were obtained
Novel benzoquinoline derivatives via unpredicted condensation of ethyl propiolate and naphthylamines: Synthesis and topoisomerase inhibition activity
作者:Giovanni Marzaro、Lisa Dalla Via、Aída Nelly García-Argáez、Martina Dalla Via、Adriana Chilin
DOI:10.1016/j.bmcl.2016.09.031
日期:2016.10
An unpredicted condensation of naphthylamine with two molecules of ethyl propiolate yields directly carbethoxy benzoquinoline in high yield. Some benzoquinoline carboxamide derivatives with protonatable side chains were then synthesized and evaluated for antiproliferative activity on human tumor cell lines. The most active compound (7a) demonstrated to intercalate into DNA and to inhibit the relaxation