An efficient method for the oxidation of phenolic compounds using new Co(II) and Fe(II) phthalocyanines

Saka, Ece Tuğba; Çelik, Gonca; Sarkı, Gülbınar; Kanteki̇n, Hali̇t

doi:10.1007/s10847-016-0615-2

Cited by 11 publications

(2 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ability of the compounds of the porphyrin and phthalocyanine class to catalyze the reactions of epoxidation [ 5 , 6 , 7 ], oxidation [ 8 , 9 , 10 , 11 ], including reactions in which molecular oxygen acts as an oxidizing agent [ 10 , 12 ], is widely known. It is found that Co(II)phthalocyanine can transfer oxygen from various oxygen donors to alkanes, alkenes, phenols and thiols in the several studies [ 10 , 13 , 14 , 15 ]. The basis of catalysis reactions is a decrease in the activation energy of the process due to the formation of intermediate compounds and/or changes in the oxidation state of the metal phthalocyanine.…”

Section: Introductionmentioning

confidence: 99%

Destruction of Chitosan and Its Complexes with Cobalt(II) and Copper(II) Tetrasulphophthalocyanines

et al. 2021

View full text Add to dashboard Cite

Chitosan is a naturally occurring polysaccharide derived from chitin with a wide range of uses. Phthalocyanines are macroheterocyclic compounds that have a number of useful properties such as coloring and catalytic and antioxidant activity. Phthalocyanines are able to immobilize on chitosan, forming complexes with new useful properties. In this work, we evaluated the ability of phthalocyanines to increase the thermal stability of chitosan. Chitosan (CS) forms complexes with copper(II)-(CuPc) and cobalt(II)-(CoPc) tetrasulphophthalocyanines. The processes of destruction of chitosan (CS) and its complexes with sulphophthalocyanines CuPc and CoPc in oxidizing and inert atmospheres have been studied. It was established that, regardless of the atmosphere composition, the first chemical reactions taking place in the studied systems are elimination reactions. The latter ones in the case of chitosan and complex CS-CuPc lead to the formation of spatially crosslinked polymer structures, and it causes the release of CuPc from the polymer complex. It was found that in the case of CS-CoPc elimination reactions did not lead to the formation of crosslinked polymer structures but caused the destruction of the pyranose rings with a partial release of CoPc. Metallophthalocyanines showed antioxidant properties in the composition of complexes with chitosan, increasing the temperature of the beginning of glycosidic bond cleavage reaction by 30–35 °C in comparison with the similar characteristics for chitosan.

show abstract

Section: Introductionmentioning

confidence: 99%

Destruction of Chitosan and Its Complexes with Cobalt(II) and Copper(II) Tetrasulphophthalocyanines

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Non-covalent interaction between biopolymers and phthalocyanines containing hydrophobic and hydrophilic groups is promising for creation of novel sensitizers for PDT [2,3]. Besides, catalytic activity in redox processes of mercaptans and olefins of these compounds is also promising [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Symmetrical and difunctional substituted cobalt phthalocyanines with benzoic acids fragments: Synthesis and catalytic activity

Вашурин

Майзлиш

Kuzmin

et al. 2017

J. Porphyrins Phthalocyanines

View full text Add to dashboard Cite

Difunctional and symmetric phthalonitriles were synthesized by nucleophilic substitution of brome and nitro-group in 4-bromo-5-nitro-phthalonitrile for residues 4-amino-, 4-hydroxyl-and 4-sulfanyl benzoic acid. Symmetrical and difunctional substituted cobalt phthalocyanines were obtained by template synthesis based on mentioned phthalonitriles. Their spectral properties and catalytic activity in aerobic oxidation of sodium N,N-carbomoditiolate were investigated.

show abstract

Oxidation of Thymol and Carvacrol to Thymoquinone with KHSO5 Catalyzed by Iron Phthalocyanine Tetrasulfonate in a Methanol–Water Mixture

et al. 2016

View full text Add to dashboard Cite

An efficient method for the oxidation of phenolic compounds using new Co(II) and Fe(II) phthalocyanines

Cited by 11 publications

References 40 publications

Destruction of Chitosan and Its Complexes with Cobalt(II) and Copper(II) Tetrasulphophthalocyanines

Destruction of Chitosan and Its Complexes with Cobalt(II) and Copper(II) Tetrasulphophthalocyanines

Symmetrical and difunctional substituted cobalt phthalocyanines with benzoic acids fragments: Synthesis and catalytic activity

Oxidation of Thymol and Carvacrol to Thymoquinone with KHSO5 Catalyzed by Iron Phthalocyanine Tetrasulfonate in a Methanol–Water Mixture

Contact Info

Product

Resources

About