A One-Step Synthesis of 2,4-Unsubstituted Quinoline-3-carboxylic Acid Esters from <i>o</i>-Nitrobenzaldehydes
作者:Hariharan Venkatesan、Frances M. Hocutt、Todd K. Jones、Michael H. Rabinowitz
DOI:10.1021/jo100392x
日期:2010.5.21
straightforward and efficient one-step procedure for the synthesis of 2,4-unsubstituted quinoline-3-carboxylic acid ethyl esters is described. The simple reductive cyclization is carried out by treating various substituted o-nitrobenzaldehydes with inexpensive, commercially available 3,3-diethoxypropionic acid ethyl ester and SnCl2·2H2O in refluxing ethanol.
Visible light catalyzed synthesis of quinolines from (aza)-Morita–Baylis–Hillman adducts
作者:Atul Kumar Chaturvedi、Namrata Rastogi
DOI:10.1039/c8ob02260g
日期:——
A mild and efficient protocol for the synthesis of quinoline scaffolds from (aza)-MBH adducts under visible light catalysis has been established. The reaction involves visible light catalyzed generation of amidyl radicals from (aza)-MBH adducts followed by intramolecular radical cyclization. The reaction exhibits a wide substrate scope, good functional group tolerance and high regioselectivity. This
[EN] ARYLMETHYLAMINE DERIVATIVES FOR USE AS TRYPTASE INHIBITORS<br/>[FR] DERIVES D'ARYLMETHYLAMINE UTILISES COMME INHIBITEURS DE LA TRYPTASE
申请人:AVENTIS PHARM PROD INC
公开号:WO2001090101A1
公开(公告)日:2001-11-29
Provided herein are compounds of formula (I) wherein R1-4, n and Ar are as defined in claim 1, and their pharmaceutical compositions. These compounds are tryptase inhibitors and may be used in the treatment of e.g. asthma and inflammatory diseases.
Synthesis and Elimination Pathways of 1-Methanesulfonyl-1,2-dihydroquinoline Sulfonamides
作者:Ebenezer Ametsetor、Kwabena Fobi、Richard A. Bunce
DOI:10.3390/molecules28073256
日期:——
Subsequent efforts to eliminate the methylsulfonyl group from these derivatives (K2CO3, DMF, 90 °C) as a route to quinolines were met with mixed results. Although dihydroquinoline sulfonamides prepared from ethyl acrylate and acrylonitrile generally underwent elimination to give excellent yields of quinolines, those generated from 3-buten-2-one failed to undergo elimination and instead decomposed