Palladium–Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions

Islam, Rafique Ul; Mahato, Shashi B.; Shukla, Sudheesh K.; Witcomb, M. J.; Mallick, Kaushik

doi:10.1002/cctc.201300131

Cited by 26 publications

(18 citation statements)

References 55 publications

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“…Irregular shaped, heterogeneous and micro-sized platelike structures were observed from this Figure. EDX analysis assigned the existence of copper, carbon, nitrogen and sulfur atoms on the surface of the product (Figure 3). This morphology is different from previous studies [6,7,9]. The thickness and the length of rods observed at Figure 4 were around 200-400 nm, 4-6µm, respectively.…”

Section: Resultscontrasting

confidence: 98%

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Synthesis and Characterization and Thermal Decomposition Kinetics of Poly (quinoline)-Copper Composite

Bi̇li̇ci̇¹,

Tezel²,

Kaya³

et al. 2018

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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In here, chemical oxidative synthesis of a new poly(quinoline)-copper composite was given in one-step pathway. To obtain composite, the copper sulphate and 2-amino-8-quinolinol were used as oxidant and monomer, respectively. The oxidation product obtained was characterized by FTIR, UV-Vis, thermogravimetry (TG), photoluminescence (PL), SEM-EDX, TEM analysis and solid state conductivity measurements. SEM observations exhibited the presence of a plate-like heterogeneous morphology. Rod like structures was revealed from TEM images. TEM studies also indicated that the copper nanoparticles were almost uniformly distributed on polymer. The thermal decomposition kinetics of oxidation product were also studied. For this, the different methods such as Coats-Redfern, Flynn-Wall-Ozawa, Tang and Kissinger-Akahira-Sunose were used.

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Section: Resultscontrasting

confidence: 98%

“…AQ is a derivate compound of 3-aminoquinoline (3AQ) and 6-aminoquinoline (6AQ). The oxidation of 3AQ [6,7] and 6AQ [9] were accomplished by using palladium acetate and copper sulphate solutions in one step. In the each study, the composite materials composed of core (metal)-shell (polymer) hallows were obtained.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization and Thermal Decomposition Kinetics of Poly (quinoline)-Copper Composite

Bi̇li̇ci̇¹,

Tezel²,

Kaya³

et al. 2018

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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“…The two sharp IR adsorptions at 1491 and 1637 cm -1 were also associated with aromatic ring stretching. The peaks at 1637 cm -1 and 1474 cm -1 were assigned to the quinoid and benzenoid ring vibrations, respectively [27]. A peak at 1355 cm -1 was assignable to the C-N stretching vibration in quinoid imine units [26].…”

Section: Resultsmentioning

confidence: 99%

Chemical Oxidation of 5-amino quinoline with (NH4)2S2O8: Synthesis and Characterization

Bi̇li̇ci̇¹

2017

HJBC

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Ö Z 5 -amino kinolin monomeri (NH 4 ) 2 S 2 O 8 /HCI varlığında kimyasal olarak yükseltgendi. Elde edilen oksidasyon ürününün (OAQ) yapısı, UV-vis, FTIR, 1 HNMR ve 13 CNMR analizleri ile aydınlatıldı. Spektral analizler sonucunda oksidasyon ürünün yapısında fenazin birimlerinin bulunduğu ve momomerik birimlerin birbirleri ile 3,6 ve 8 pozisyonları ile birleştiği belirlendi. Büyüklükçe ayırma tekniği, ürünün oligomerik birimlerden oluştuğunu gösterdi. OAQ ısısal bozunmaya karşı dayanıklıdır. Yarı bozunma sıcaklığının 1000ºC olduğu belirlendi Anahtar KelimelerOksidatif polimerizasyon, 5 -amino kinolin, termal dayanıklılık, floresans. A B S T R A C T5 -amino quinoline (AQ) was chemically oxidized in (NH 4 ) 2 S 2 O 8 /HCI system, whose structure was identified by UV-vis, FTIR, 1 HNMR and 13 CNMR analysis. Spectral analysis results indicated the formation of phenazine like units in the oxidation product and C3, C6, C8 positions of quinoline ring were suggested as a possible polymerization sites. Size exclusion chromatography indicated the oxidation product (OAQ) consisted of oligomeric units (1200 g/mol). OAQ was thermally stable and half of its mass was decomposed at 1000ºC.

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“…[4] A ‘core–shell’ type of structure with ‘polystyrene in the core’ and ‘palladium–polypyrrole nanocomposite as the shell’ has been employed for Suzuki and Heck cross‐coupling reactions in water . Polyaniline as well as its derivatives are conducting organic polymers and have also been demonstrated as supports for immobilizing palladium species for various carbon–carbon bond formation reactions [16, 5] . In our previous study we found that polymer‐encapsulated palladium nanoparticles served as an efficient catalyst for the Suzuki coupling reaction in the absence of phosphine ligand …”

Section: Introductionmentioning

confidence: 99%

Polymer‐supported palladium: A hybrid system for multifunctional catalytic application

Taher

Choudhary

Nandi

et al. 2017

Applied Organom Chemis

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Polymer-supported palladium was synthesized by applying a single-step wet chemical synthesis route and the resultant composite material was characterized by means of various techniques. Infrared and UV-visible spectra provided information on the chemical structure of the polymer. Microscopy techniques showed the general morphology of the polymer. The oxidation state of palladium was determined using the X-ray photoelectron spectroscopy method. The synthesized material was applied as a heterogeneous catalyst for the Heck coupling reaction and also as an electrocatalyst for the oxidation of cysteine.

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Palladium–Poly(3‐aminoquinoline) Hollow‐Sphere Composite: Application in Sonogashira Coupling Reactions

Abstract: We report on the use of palladium acetate for the synthesis of a palladium‐based polymer composite material as a catalyst for Sonogashira cross‐coupling reactions for aryl and heteroaryl of iodides and bromides.

Cited by 26 publications

References 55 publications

Synthesis and Characterization and Thermal Decomposition Kinetics of Poly (quinoline)-Copper Composite

Synthesis and Characterization and Thermal Decomposition Kinetics of Poly (quinoline)-Copper Composite

Chemical Oxidation of 5-amino quinoline with (NH4)2S2O8: Synthesis and Characterization

Polymer‐supported palladium: A hybrid system for multifunctional catalytic application

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