A Multicomponent Coupling Sequence for Direct Access to Substituted Quinolines
摘要:
A titanium-catalyzed three-component coupling reaction can be used to generate tautomers of N-aryl-1,3-diimines. Simple treatment of these products with acetic acid leads to cyclization forming quinoline derivatives in a one-pot procedure. The primary amines employed can be substituted anilines, aminonaphthalenes, or even heterocyclic amines, which leads to a variety of fused-ring heterocyclic frameworks. The one-pot yields varied from 25-71% for the 18 examples presented in this study.
A practicable quinoline synthesis from aniline and two amino acids was developed for generating a wide range of quinolines with high efficiency and diversity. Thus, it facilitated the creations of pharmaceutical derivatives, photochemical active compounds, and challenging scaffolds. The concept of using two amino acids as heterocyclic precursors has been raised for the first time. Mechanistic studies
Borsche; Wagner-Roemmich, Justus Liebigs Annalen der Chemie, 1940, vol. 544, p. 280,284
作者:Borsche、Wagner-Roemmich
DOI:——
日期:——
[EN] APPARATUS AND METHODS FOR SIMULTANEOUS OPERATION OF MINIATURIZED REACTORS<br/>[FR] DISPOSITIFS ET PROCEDES SERVANT A EFFECTUER L'OPERATION SIMULTANEE DE REACTEURS MINIATURISES
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2005097969A1
公开(公告)日:2005-10-20
The present invention provides a variety of microscale bioreactors (microfermentors) and microscale bioreactor arrays for use in culturing cells. The microfermentors include a vessel (2) for culturing cells and means for providing oxygen (6) to the interior of the vessel at a concentration sufficient to support cell growth, e.g., growth of bacterial cells. Depending on the embodiment, the microfermentor vessel may have various interior volumes less than approximately 1 ml. The microfermentors may include an aeration membrane (6) and optionally a variety of sensing devices (12). The invention further provides a chamber to contain the microfermentors and microfermentor arrays and to provide environmental control. The invention provides microreactors having a variety of different designs, some of which incorporate active stirring and/or have the capability to operate in batch or fed-batch mode. The invention further provides an apparatus and methods for simultaneous operation of a plurality of microreactors, with monitoring of the individual microreactors during a run. The invention further provides methods of performing gene expression analysis on cells cultured in microreactors.
A Multicomponent Coupling Sequence for Direct Access to Substituted Quinolines
作者:Supriyo Majumder、Kevin R. Gipson、Aaron L. Odom
DOI:10.1021/ol901855b
日期:2009.10.15
A titanium-catalyzed three-component coupling reaction can be used to generate tautomers of N-aryl-1,3-diimines. Simple treatment of these products with acetic acid leads to cyclization forming quinoline derivatives in a one-pot procedure. The primary amines employed can be substituted anilines, aminonaphthalenes, or even heterocyclic amines, which leads to a variety of fused-ring heterocyclic frameworks. The one-pot yields varied from 25-71% for the 18 examples presented in this study.