Polystyrene bound dioxidovanadium(V) complexes of 2-acetylpyridine derived ligands for catalytic oxidations

Maurya, Mannar R.; Chaudhary, Nikita; Kumar, Amit; Avecilla, Fernando; Pessoa, João Costa

doi:10.1016/j.ica.2013.11.021

Cited by 35 publications

(15 citation statements)

References 48 publications

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“…[10] Bromoperoxidases as catalysts for oxidative bromination have been reviewed. [4] A wide variety of vanadium complexes have been synthesized and used as functional models for V-haloperoxidases in order to have a better understanding of the mechanism of action of such enzymes, and these complexes are effective catalyst precursors in various oxidation reactions such as epoxidation of alkenes, oxidation of sulfides, alkanes, arenes and alcohols, as well as in oxidative bromination reactions in the presence of hydrogen peroxide [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] or alkyl hydroperoxides. [26] Inspired by the mechanism of action of V Br PO, a biphasic procedure for bromination reactions was proposed in 1994.…”

Section: Introductionmentioning

confidence: 99%

Thymol Bromination – A Comparison between Enzymatic and Chemical Catalysis

et al. 2015

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An efficient three‐component reaction involving carbon monoxide with a range of aryl bromides and N‐substituted acetoacetamides is reported for the synthesis of β‐keto amides. This transformation is promoted by Pd‐catalysis followed by an acid‐mediated deacetylation upon work‐up, enabling a large number of β‐keto amides to be isolated. Finally, d2‐13C‐dyclonine could be synthesized in three steps utilizing the developed catalytic system as the key step.

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Section: Introductionmentioning

confidence: 99%

Thymol Bromination – A Comparison between Enzymatic and Chemical Catalysis

et al. 2015

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“…Oxovanadium(V) and oxomolybdenum(VI) complexes have been attached to polymer backbones through the anchor groups of a modified salen‐like structure (Table , entry 8) . Likewise, vanadium(V) Schiff base and related complexes were grafted to a polystyrene (PS) backbone without or with spacer units (Table , entries 9–11). The structure and synthesis of a PS‐bound oxovanadium(V) complex are shown in Figure a .…”

Section: Supported Biomimetic Catalysts For Halogenation Reactionsmentioning

confidence: 99%

Functional Enzyme Mimics for Oxidative Halogenation Reactions that Combat Biofilm Formation

et al. 2018

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Transition-metal oxide nanoparticles and molecular coordination compounds are highlighted as functional mimics of halogenating enzymes. These enzymes are involved in halometabolite biosynthesis. Their activity is based upon the formation of hypohalous acids from halides and hydrogen peroxide or oxygen, which form bioactive secondary metabolites of microbial origin with strong antibacterial and antifungal activities in follow-up reactions. Therefore, enzyme mimics and halogenating enzymes may be valuable tools to combat biofilm formation. Here, halogenating enzyme models are briefly described, enzyme mimics are classified according to their catalytic functions, and current knowledge about the settlement chemistry and adhesion of fouling organisms is summarized. Enzyme mimics with the highest potential are showcased. They may find application in antifouling coatings, indoor and outdoor paints, polymer membranes for water desalination, or in aquacultures, but also on surfaces for food packaging, door handles, hand rails, push buttons, keyboards, and other elements made of plastic where biofilms are present. The use of natural compounds, formed in situ with nontoxic and abundant metal oxide enzyme mimics, represents a novel and efficient "green" strategy to emulate and utilize a natural defense system for preventing bacterial colonization and biofilm growth.

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“…My group has been mostly involved in the development of homogeneous and supported vanadium systems, mostly for catalytic epoxidations [165,167] and oxidations, namely of alkanes and alkenes [155,138,166,222,[253][254][255][256][257], of sulfides (sulfoxidations) [155,165,169,258,259,260], brominations [223,260,261], oxidative desulfurization [262], oxidative aminations [264] and hydroaminations [264]. Some of the processes involve homogeneous systems, others have addressed complexes supported in polystyrene [138,253,254,263] or encapsulated in zeolites [155,256].…”

Section: Application Vanadium Compounds In Catalysismentioning

confidence: 99%