Preparation of New Organic Luminophores Based on 3,5-Diacetylpyridines
作者:Pavel Lhoták、Antonín Kurfürst
DOI:10.1135/cccc19921937
日期:——
The reaction of acetylacetone or sodium salt of oxymethyleneacetone with corresponding aldehydes has been used to prepare 3,5-diacetyl-1,4-dihydropyridines III which have been oxidized to diacetylpyridines VII. These compounds have been transformed by an acid-catalyzed reaction with benzaldehyde into the chalcones VIII which have been utilized for the Kröhnke synthesis of luminophoric terpyridines I and II.
Reaction of 3,5-Carbonyl-substituted 1,4-Dihydropyridines with Hydrazine Hydrate
作者:E. Bisenieks、J. Uldrikis AFFIL = Latvian Institute、G. Duburs AFFIL = Latvian Institute of
DOI:10.1023/b:cohc.0000044569.14048.79
日期:2004.7
Equilibrium NH-acidity of 1,4-dihydropyridines and 4,5-dihydroindeno[1,2-b]pyridines
作者:B. A. Vigante、M. I. Terekhova、Ya. Ya. Ozols、E. S. Petrov、G. Ya. Dubur
DOI:10.1007/bf00487303
日期:1989.9
[DE] SCHWERMETALLFREIE STABILISATORZUSAMMENSETZUNG FÜR HALOGENHALTIGE POLYMERE<br/>[EN] HEAVY METAL-FREE STABILIZER COMPOSITION FOR HALOGENATED POLYMERS<br/>[FR] COMPOSITION DE STABILISATEUR EXEMPTE DE MÉTAUX LOURDS POUR POLYMÈRES HALOGÉNÉS
申请人:CHEMSON POLYMER ADDITIVE AG
公开号:WO2010060966A1
公开(公告)日:2010-06-03
Die vorliegende Erfindung betrifft eine schwermetallfreie Stabilisatorzusammensetzung für halogenhaltige Polymere, deren Verwendung bei der Stabilisierung von halogenhaltigen Polymeren, insbesondere gegenüber unerwünschter Rosafärbung, sowie Formkörper, die diese Stabilisatorzusammensetzung enthalten.
A metal-free strategy for the cross-dehydrogenative coupling of 1,3-dicarbonyl compounds with 2-methoxyethanol
作者:Vishal Suresh Kudale、Sheng Zheng、Sheng-Hua Huang、Yu-Lun Chang、Jeh-Jeng Wang
DOI:10.1039/d1ob02290c
日期:——
we report a metal-free approach for the construction of methylene-bridged bis-1,3-dicarbonyl compounds via cross-dehydrogenative coupling of 1,3-dicarbonylcompounds with 2-methoxyethanol. In addition, we have extended this methodology to synthesize tetra-substituted pyridine derivatives using 1,3-dicarbonyl, 2-methoxyethanol and NH4OAc in one step. The key advantages include accepting a wide range
在这里,我们报告了一种通过1,3-二羰基化合物与 2-甲氧基乙醇的交叉脱氢偶联来构建亚甲基桥连双 1,3-二羰基化合物的无金属方法。此外,我们扩展了这一方法,以一步合成四取代吡啶衍生物,使用 1,3-二羰基、2-甲氧基乙醇和 NH 4 OAc。主要优势包括接受广泛的底物,利用 O 2作为唯一氧化剂,以及合成生物活性化合物,如 1,4-二氢吡啶和吡唑。