Cross-coupling study of iodo/chloropyridines and 2-chloroquinoline with atom-economic triarylbismuth reagents under Pd-catalysis
摘要:
This study describes the palladium-catalyzed couplings of iodopyridines, chloropyridines, and chloroquinoline with atom-economic BiAr3 reagents in sub-stoichiometric loadings. Mono-arylations of iodo and chloropyridines produced arylpyridines in high yields. The couplings addressed with dihalopyridines have afforded chemo- and regio-selective coupling products. Arylations of 2-chloroquinoline with different triarylbismuth reagents demonstrated fruitful coupling reactivity under the established conditions. This sumptuous study demonstrates the remarkable cross-coupling reactivity of iodo/chloropyridines and chloroquinoline with triarylbismuth reagents. (C) 2014 Elsevier Ltd. All rights reserved.
Triarylbismuthanes as Threefold Aryl-Transfer Reagents in Regioselective Cross-Coupling Reactions with Bromopyridines and Quinolines
作者:Maddali L. N. Rao、Ritesh J. Dhanorkar
DOI:10.1002/ejoc.201402455
日期:2014.8
Cross-coupling studies using bromopyridines and bromoquinolines with triarylbismuths as threefold coupling reagents in substoichiometric amounts under Pd-catalysed conditions are disclosed. The reactivity was high with both mono- and dibromopyridyl substrates, and mono- and bis-couplings were carried out regioselectively. A library of monoaryl and diaryl pyridines was formed in high yields. A one-pot
3-Phenylpiperidines. Central dopamine-autoreceptor stimulating activity
作者:Uli Hacksell、Lars Erik Arvidsson、Uno Svensson、J. Lars G. Nilsson、Domingo Sanchez、Hakan Wikstroem、Per Lindberg、Stephan Hjorth、Arvid Carlsson
DOI:10.1021/jm00144a021
日期:1981.12
Thirty compounds related to the selective dopamine-autoreceptor agonist 3-(3-hydroxyphenyl)-N-n-propylpiperidine have been synthesized and tested for central dopamine-autoreceptor stimulating activity. The 3-(3-hydroxyphenyl)piperidine moiety seems indispensable for high potency and selectivity. Introduction of an additional hydroxyl group into the 4 position of the aromatic ring gives a compound with
Direct arylation of pyridines without the use of a transition metal catalyst
作者:Yahui Li、Wei Liu、Chunxiang Kuang
DOI:10.1039/c4cc02546f
日期:——
This new reaction proceeds readily at room temperature without the use of any transition metal catalyst.
这种新的反应在室温下不需要使用任何过渡金属催化剂就可以进行。
[EN] QUATERNARY LACTAM COMPOUND AND PHARMACEUTICAL USE THEREOF<br/>[FR] COMPOSÉ DE LACTAME QUATERNAIRE ET SON UTILISATION PHARMACEUTIQUE<br/>[ZH] 四元内酰胺类化合物及其药学用途
[EN] BENZOPYRAZOLE COMPOUND AND INTERMEDIATE, PREPARATION METHOD, AND APPLICATION THEREOF<br/>[FR] COMPOSÉ BENZOPYRAZOLE ET INTERMÉDIAIRE, PROCÉDÉ DE PRÉPARATION CORRESPONDANT ET UTILISATION ASSOCIÉE<br/>[ZH] 苯并吡唑类化合物及其中间体、制备方法和应用