FeCl<sub>3</sub> and Morpholine as Efficient Cocatalysts for the One-Step Synthesis of Quinoxalines from α-Hydroxyketones and 1,2-Diamines
作者:Weibin Song、Peng Liu、Min Lei、Hanyun You、Xubing Chen、Hu Chen、Lei Ma、Lihong Hu
DOI:10.1080/00397911.2010.523489
日期:2012.1.15
Abstract One-step conversion including intramolecular hydrogen bond decomposition, aerobic oxidation, and condensation from α-hydroxyketones and 1,2-diamines into quinoxalines is reported using FeCl3 and morpholine as cocatalysts. GRAPHICAL ABSTRACT
Phosphine free Mn-complex catalysed dehydrogenative C–C and C–heteroatom bond formation: a sustainable approach to synthesize quinoxaline, pyrazine, benzothiazole and quinoline derivatives
作者:Kalicharan Das、Avijit Mondal、Dipankar Srimani
DOI:10.1039/c8cc05877f
日期:——
Herein the first sustainable synthesis of quinoxalines, pyrazines and benzothiazoles catalysed by a phosphine free Mn(I) complex via acceptorless dehydrogenative coupling (ADC) is reported. This method is also applied successfully to synthesize quinolines via the dehydrogenation (removal of H2) and condensation (removal of H2O) reaction between 2-aminobenzyl alcohols and secondary alcohols.
[EN] SUBSTITUTED QUINOXALINE DERIVATIVES AND THEIR USE AS POSITIVE ALLOSTERIC MODULATORS OF MGLUR4<br/>[FR] DÉRIVÉS DE QUINOXALINE SUBSTITUÉS ET LEUR UTILISATION À TITRE DE MODULATEURS ALLOSTÉRIQUES POSITIFS DU MGLUR4
申请人:MERCK PATENT GMBH
公开号:WO2014121885A1
公开(公告)日:2014-08-14
The present invention relates to novel quinoxaline derivatives of formula (I) as positive allosteric modulators for modulating metabotropic glutamate receptor subtype 4 (mGluR4) and/or altering glutamate level or glutamatergic signalling.
Gas-phase pyrolysis of 2,3-dihydro-1,4-diazepines: involvement of the saturated portion of the ring in chemical reactions and novel cis–trans isomerisation of a fused ring system
作者:Michael J. Ellis、Douglas Lloyd、Hamish McNab、Marion J. Walker
DOI:10.1039/c39950002337
日期:——
Flashvacuumpyrolysis of 2,3-dihydro-1,4-diazepines in the range 450–550 °C involves interaction of the saturated portion of the molecule with the vinamidine system and causes 1,5-hydrogen shifts which have been established by deuterium labelling experiments; at higher temperatures, ring contraction occurs to give pyrazines as major products.
Organometallic Complex, and Light-Emitting Device and Electronic Appliance Using the Same
申请人:Seo Satoshi
公开号:US20120049727A1
公开(公告)日:2012-03-01
In a general formula (1), each of R
1
and R
2
represents any one of hydrogen, an alkyl group, a halogen group, —CF3, an alkoxy group, and an aryl group. M represents an element that belongs to Group 9 or Group 10. Here, an alkyl group having 1 to 4 carbon atoms is preferable in the alkyl group. A fluoro group is particularly preferable in the halogen group. An alkoxy group having 1 to 4 carbon atoms is preferable in the alkoxy group. A phenyl group is particularly preferable in the aryl group. Iridium is particularly preferable among the elements that belong to Group 9, and platinum is particularly preferable among the elements that belong to Group 10. The general formula (1) is inserted.