Acid Catalyzed Polymerization of Phenyl Ethane 1,2-diol for One-Pot Synthesis of Organosoluble Poly(phenylene Vinylene)

<div> <div> <div> <p>Acid catalyzed polymerization of phenyl ethane 1,2-diol is realized for the first time via a novel one-pot coupling reaction to produce organosoluble poly(phenylene vinylene). A variety of experimental conditions were investigated. PPV structure was confirmed by 13C-NMR and 1H-NMR chemical shifts. Fluorescence spectra of the polymer showed emission in the visible range, as to be expected. Average PPV molecular weights ranged from 670 to 6200 Da. The methanesulfonic acid (MesOH) catalyzed syntheses were shown to produce higher molecular weight and purity PPV than the sulfuric acid (H2SO4) counterparts, although both are able to produce organosoluble products. </p> </div> </div> </div>

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Methanesulfonic Acid-Catalyzed One-Pot Synthesis of 12-Aryl or 12-Alkyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives

Journal of Heterocyclic Chemistry ◽

10.1002/jhet.882 ◽

2012 ◽

Vol 49 (4) ◽

pp. 861-864 ◽

Cited By ~ 6

Author(s):

Yu-Heng Liu ◽

Lei Li

Keyword(s):

Methanesulfonic Acid ◽

One Pot ◽

One Pot Synthesis ◽

Acid Catalyzed

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ChemInform Abstract: Methanesulfonic Acid-Catalyzed One-Pot Synthesis of 12-Aryl- or 12-Alkyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one Derivatives

ChemInform ◽

10.1002/chin.201303130 ◽

2013 ◽

Vol 44 (3) ◽

pp. no-no

Author(s):

Yu-Heng Liu ◽

Lei Li

Keyword(s):

Methanesulfonic Acid ◽

One Pot ◽

One Pot Synthesis ◽

Acid Catalyzed

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Ascorbic acid-Catalyzed One-Pot Three-Component Biginelli Reaction: A Practical and Green Approach towards Synthesis of 3,4-dihydropyrimidin- 2(1H)-ones/thiones

Letters in Organic Chemistry ◽

10.2174/15701786113109990014 ◽

2013 ◽

Vol 10 (7) ◽

pp. 463-467 ◽

Cited By ~ 4

Author(s):

Imene Sehout ◽

Raouf Boulcina ◽

Boudjemaa Boumoud ◽

Fabienne Berree ◽

Bertrand Carboni ◽

...

Keyword(s):

Ascorbic Acid ◽

Biginelli Reaction ◽

One Pot ◽

Green Approach ◽

Acid Catalyzed

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Sulfamic Acid-catalyzed One-pot Multicomponent Synthesis of 5-phenyl-2- thioxo-1,2,3,5-tetrahydro-4H-pyrimido[4,5-d][1,3]thiazolo[3,2-a]pyrimidin- 4-ones

Current Green Chemistry ◽

10.2174/2213346103666161115124757 ◽

2017 ◽

Vol 3 (3) ◽

pp. 227-234 ◽

Cited By ~ 2

Author(s):

Sunetra Jadhav ◽

Ajinkya Patravale ◽

Reshma Patil ◽

Digambar Kumbhar ◽

Vishram Karande ◽

...

Keyword(s):

Sulfamic Acid ◽

Multicomponent Synthesis ◽

One Pot ◽

Acid Catalyzed

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Preparation of graft copolymers by the reaction of polymeric acyl chlorides with monohydroxy-terminated polymers: An introductory study

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19881735 ◽

1988 ◽

Vol 53 (8) ◽

pp. 1735-1744 ◽

Cited By ~ 1

Author(s):

Jitka Horská ◽

Jaroslav Stejskal ◽

Pavel Kratochvíl ◽

Aubrey D. Jenkins ◽

Eugenia Tsartolia ◽

...

Keyword(s):

Light Scattering ◽

Chemical Composition ◽

Statistical Model ◽

Graft Copolymers ◽

Coupling Reaction ◽

Molecular Characteristics ◽

Gel Formation ◽

Acyl Chlorides ◽

Molecular Weights

An attempt was made to prepare well-defined graft copolymers by the coupling reaction between acyl chloride groups located along the backbone chain and monohydroxy-terminated grafts prepared separately. The molecular weights and the parameters of heterogeneity in chemical composition of the products were determined by light scattering and osmometry. The determination of molecular characteristics revealed that the degree of grafting was low. The results therefore could not be confronted with a statistical model at this stage. The problems encountered in the synthesis, e.g., gel formation, and the data relating to the soluble products are discussed.

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Synthesis of the six isomeric thieno[c]-fused 1,5- and 1,6-naphthyridines

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19912340 ◽

1991 ◽

Vol 56 (11) ◽

pp. 2340-2351 ◽

Cited By ~ 18

Author(s):

Salo Gronowitz ◽

Johan Malm ◽

Anna-Britta Hörnfeldt

Keyword(s):

Nmr Spectra ◽

Coupling Reaction ◽

One Pot ◽

C Nmr

trough the use of Pd(0)-catalyzed coupling between 2- and 4-formyl-3-thiopheneboronic acids and 3-amino-2-bromopyridine and 4-acetamido-3-bromopyridine, convenient one-pot procedures for the preparation of thieno[2,3-c]-1,5-naphthyridine, thieno[3,4-c]-1,5-naphthyridine, thieno-[2,3-c]-1,6-naphthyridine, and thieno[3,4-c]-1,6-naphthyridine have been developed. In order to obtain thieno[3,2-c]-1,6-naphthyridine 2-(tributylstannyl)-3-thiophene aldehyde had to be used, since the organometallic partner in the coupling reaction, 3-formyl-2-thipheneboronic acid, is too easily deboronated. The effect of silver(I) oxide and thallium(I) carbonate on the coupling was studied. 1H and 13C NMR spectra of the six isomeric thieno{c]-fused 1,5- and 1,6-naphthyridines are discussed.

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Grafting of (3-Chloropropyl)-Trimethoxy Silane on Halloysite Nanotubes Surface

Applied Sciences ◽

10.3390/app11125534 ◽

2021 ◽

Vol 11 (12) ◽

pp. 5534

Author(s):

Asmaa M. Abu El-Soad ◽

Giuseppe Lazzara ◽

Alexander V. Pestov ◽

Daria P. Tambasova ◽

Denis O. Antonov ◽

...

Keyword(s):

Active Site ◽

Chemical Engineering ◽

Coupling Reaction ◽

Ammonium Hydroxide ◽

Halloysite Nanotubes ◽

Chemical Activity ◽

Molar Ratio ◽

New Materials ◽

Experimental Conditions ◽

Trimethoxy Silane

Modified halloysite nanotubes (HNTs-Cl) were synthesized by a coupling reaction with (3-chloropropyl) trimethoxysilane (CPTMS). The incorporation of chloro-silane onto HNTs surface creates HNTs-Cl, which has great chemical activity and is considered a good candidate as an active site that reacts with other active molecules in order to create new materials with great applications in chemical engineering and nanotechnology. The value of this work lies in the fact that improving the degree of grafting of chloro-silane onto the HNT’s surface has been accomplished by incorporation of HNTs with CPTMS under different experimental conditions. Many parameters, such as the dispersing media, the molar ratio of HNTs/CPTMS/H2O, refluxing time, and the type of catalyst were studied. The greatest degree of grafting was accomplished by using toluene as a medium for the grafting process, with a molar ratio of HNTs/CPTMS/H2O of 1:1:3, and a refluxing time of 4 h. The addition of 7.169 mmol of triethylamine (Et3N) and 25.97 mmol of ammonium hydroxide (NH4OH) led to an increase in the degree of grafting of CPTMS onto the HNT’s surface.

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Novel Preparation of Cu and Fe Zirconia Supported Catalysts for Selective Catalytic Reduction of NO with NH3

Catalysts ◽

10.3390/catal11010055 ◽

2021 ◽

Vol 11 (1) ◽

pp. 55

Author(s):

Katarzyna Świrk ◽

Ye Wang ◽

Changwei Hu ◽

Li Li ◽

Patrick Da Costa ◽

...

Keyword(s):

Selective Catalytic Reduction ◽

Catalytic Reduction ◽

Supported Catalysts ◽

Catalytic Performance ◽

Experimental Conditions ◽

One Pot ◽

Nh3 Scr ◽

Scr Of No ◽

Temperature Programmed ◽

Stationary Sources

Copper and iron promoted ZrO2 catalysts were prepared by one-pot synthesis using urea. The studied catalysts were characterized by XRD, N2 physisorption, XPS, temperature-programmed desorption of NH3 (NH3-TPD), and tested by the selective catalytic reduction by ammonia (NH3-SCR) of NO in the absence and presence of water vapor, under the experimental conditions representative of exhaust gases from stationary sources. The influence of SO2 on catalytic performance was also investigated. Among the studied catalysts, the Fe-Zr sample showed the most promising results in NH3-SCR, being active and highly selective to N2. The addition of SO2 markedly improved NO and NH3 conversions during NH3-SCR in the presence of H2O. The improvement in acidic surface properties is believed to be the cause.

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