نتایج جستجو برای: one pot reactions

تعداد نتایج: 2140660  

2005
Mecheril V. Nandakumar John G. Verkade

N,N-Diaryl aminostilbenes and N,N-diaryl aminostyrenes are versatile compounds that have found exciting applications in the field of photochemistry; most of these compounds are patented and they are widely used as electro-photographic photoconductors and photoreceptors. Recent reports have demonstrated, for example, that these compounds can exhibit an amino-conjugation effect in their fluoresce...

Journal: :Organic & biomolecular chemistry 2012
Xin Li Shufang Huang Yongzhou Hu

Regioselectively brominated BODIPYs were shown to undergo nucleophilic substitution and Sonogashira coupling reactions with a one-pot procedure, yielding diversely substituted fluorophores.

In this work, the efficiency, generality and applicability of new Bronsted acidic ionic liquid (BAIL) 1-methyl-3-(2-(sulfooxy)ethyl)-1H-imidazol-3-ium chloride {[Msei]Cl} as heterogeneous and green catalyst for organic transformations are studied. Herein, the following one-pot multi-component reactions in the presence of [Msei]Cl are investigated: (i) the synthesis of quinoxaline derivatives fr...

2012
Aleksandra Pałasz

ABSTRACT Knoevenagel condensation of barbituric acids with aromatic aldehydes containing one or two formyl groups was carried out. 5-Arylidenebarbituric acids underwent smooth hetero-Diels-Alder (HDA) reactions with enol ethers to afford cis and trans diastereoisomers of pyrano[2,3-d]pyrimidine-2,4-diones and 5,5'-(1,4-phenylene)bis[2H-pyrano[2,3-d]pyrimidine-2,4(3H)-dione] derivatives in excel...

Journal: :Chemical communications 2013
Donghee Kim Minsik Min Sungwoo Hong

One-pot reactions leading to highly functionalized coumarins have been developed via a Pd(II)-catalyzed dehydrogenation-oxidative Heck-cyclization process.

Journal: :Molecules 2013
Kankan Zhang Xueping Liang Ming He Jian Wu Yuping Zhang Wei Xue Linhong Jin Song Yang Deyu Hu

An efficient one-pot synthesis of novel β-amino acid derivatives containing a thiadiazole moiety was developed using a chiral squaramide cinchona alkaloid as organocatalyst. The reactions afforded chiral β-amino acid derivatives in moderate yields and with moderate to excellent enantioselectivities. The present study demonstrated for the first time the use of a Mannich reaction catalyzed by a ch...

Journal: :Molecules 2016
Simge Çınar Michael D Schulz Stephanie Oyola-Reynoso David K Bwambok Symon M Gathiaka Martin Thuo

Pot-in-pot reactions are designed such that two reaction media (solvents, catalysts and reagents) are isolated from each other by a polymeric membrane similar to matryoshka dolls (Russian nesting dolls). The first reaction is allowed to progress to completion before triggering the second reaction in which all necessary solvents, reactants, or catalysts are placed except for the starting reagent...

Journal: :Chemical communications 2012
Ming Chen Yifeng Chen Yuanhong Liu

Pd(0)-catalyzed cascade reactions of 1,7-diyn-3,6-bis(propargyl carbonate) with organoboronic acids have been developed, which provide one-pot access to functionalized tetracenes or pentacenes.

Journal: :Chemical communications 2014
Pandurang V Chouthaiwale Fujie Tanaka

Concise cascade reactions of pyruvates with aldehydes that generate functionalized dihydropyran derivatives in one pot have been developed. The products, dihydropyrans, were further concisely transformed to various molecules.

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