Heterogeneous dendronized polymer with peripheral copper moieties: From synthesis to catalysis and comparison with dendrigraft polymer

Smitha, G.; Sinija, P.S.; Sherlymol, P.B.; Jisha, K. A.; Anjaly, K.J.; Sreekumar, K.

doi:10.1016/j.polymer.2017.05.054

Cited by 7 publications

(3 citation statements)

References 63 publications

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“…[2,22] The interesting fact about novel dendronized polymer in comparison with other dendritic polymers like dendrimers and dendrigraft polymers is the site isolation of active sites. [4,[23][24][25] In dendronized polymer, the symmetrical dendrons are grafted on to the linear polymer chain. As a result of grafting of dendrons, the linear polymer chain becomes rigid, causing the permanent site isolation of peripheral active sites.…”

Section: Introductionmentioning

confidence: 99%

“…[26] The main characteristic of a polymer supported metal complex to become a good catalyst is that it should be easily recovered and reused. [4,[24][25][26][27] In the last few years, various palladium-based heterogeneous catalysts have been investigated to improve the efficiency of various organic reactions. They are found to be providing better catalytic activity, sustainability and recyclability.…”

Section: Introductionmentioning

confidence: 99%

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Heterogeneous palladium (II)‐complexed dendronized polymer: A rare palladium catalyst for the one‐pot synthesis of 2‐arylbenzoxazoles

George

Sreekumar

2020

Applied Organom Chemis

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The palladium complex of dendronized amine polymer (EG-Gn-Pd, n = 0, 1 and 2) having ethylene glycol-initiated polyepichlorohydrin as core was synthesized on a Merrifield resin support and was well characterized. Generally, palladium catalysts are known for carbon-carbon coupling reactions. Here, a developed catalyst was found to be good for benzoxazole synthesis. Higher generation dendronized polymer (EG-G2-Pd) was found to be better catalyst over lower generation dendronized polymers. Moreover, dendronized polymers were found to be a better catalyst over dendrigraft polymers. The catalyst reusability was checked and good yield was obtained for five cycles.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heterogeneous palladium (II)‐complexed dendronized polymer: A rare palladium catalyst for the one‐pot synthesis of 2‐arylbenzoxazoles

George

Sreekumar

2020

Applied Organom Chemis

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“…As the merger of the two families of dendrimers and polymers, dendronized polymers are macromolecules in which perfectly branched dendrons are attached as pendant groups onto a linear polymer backbone affording a structure where many active termini surround a single chain . Due to their unique tailorable structures and physicochemical properties, dendronized polymers have attracted significant attention in the field of nanoscience and bioscience . Few reports have focused on the synthesis and application of dendronized metallopolymers; however, presumably due to their challenging synthesis .…”

Section: Introductionmentioning

confidence: 99%

New ROMP Synthesis of Ferrocenyl Dendronized Polymers

Xiong

Ling

Zhao

et al. 2017

Macromol. Rapid Commun.

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First- and second-generation Percec-type dendronized ferrocenyl norbornene macromonomers containing, respectively, three and nine ferrocenyl termini are synthesized and polymerized by ring-opening metathesis polymerization using Grubbs' third-generation olefin metathesis catalyst with several monomer/catalyst feed ratios between 10 and 50. The rate of polymerization is highly dependent on the generation of the dendronized macromonomers, but all these ring-opening metathesis polymerization reactions are controlled, and near-quantitative monomer conversions are achieved. The numbers of ferrocenyl groups obtained are in agreement with the theoretical ones according to the cyclic voltammetry studies as determined using the Bard-Anson method.

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Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1H‐Imidazole Derivatives: State of the Art

et al. 2019

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1,2,4,5-Tetrasubstituted-1H-imidazoles are a large family of heteroarene derivatives that are known to include natural products isolated from marine sponges and synthetic compounds possessing a broad range of biological and pharmacological properties. Consequently, a great deal of attention has been given to the synthesis of these heteroarenes and reviews covering some synthetic aspects of this topic have been published in recent years. However, none of these reviews provides a comprehensive overview of the several catalytic methods developed in the literature for the preparation of this important class of heteroarenes. This article review with 469 references, 63% of them being related to the period 2010-2017, aims to provide an updated critical picture of the catalytic processes reported in the literature up to the end of 2017 for the synthesis of 1,2,4,5-tetrasubstituted-1H-imidazoles illustrating these protocols and their characteristic features such as scope, efficiency, versatility, and limitations. The review also summarizes the mechanisms of the catalytic processes proposed for many of the reported processes.

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Heterogeneous dendronized polymer with peripheral copper moieties: From synthesis to catalysis and comparison with dendrigraft polymer

Cited by 7 publications

References 63 publications

Heterogeneous palladium (II)‐complexed dendronized polymer: A rare palladium catalyst for the one‐pot synthesis of 2‐arylbenzoxazoles

Heterogeneous palladium (II)‐complexed dendronized polymer: A rare palladium catalyst for the one‐pot synthesis of 2‐arylbenzoxazoles

New ROMP Synthesis of Ferrocenyl Dendronized Polymers

Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1H‐Imidazole Derivatives: State of the Art

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