Metallophthalocyanine catalyzed olefination of aldehydes

Ventura, Dominic L.; Heller, Scott; Noworyta, Tara D.; Kijanka, Kristopher C.; Belz, Brandon M.

doi:10.1016/j.tetlet.2018.12.039

Cited by 2 publications

(1 citation statement)

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“…MPc during photo-irradiation are capable of generating singlet oxygen and other active forms of oxygen, and this feature of them is used in the treatment of cancer by means of photodynamic therapy [ 4 ]. 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 ].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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Iron(II) Phthalocyanine-Catalyzed Olefination of Aldehydes with Diazoacetonitrile: A Novel Approach to Construct Alkenyl Nitriles

Wang,

Zhou,

Peng

et al. 2024

ACS Omega

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A novel synthetic approach to preparing alkenyl nitriles via the olefination of aldehydes with diazoacetonitrile catalyzed by iron(II) phthalocyanine in the presence of PPh 3 has been developed. A broad variety of aldehydes are efficiently transformed into the corresponding products with the high yields of 75%−97%. And it is also suitable for its gram-scale preparation. The suggested mechanism involves the transformation of the phosphazine to ylide by iron(II) phthalocyanine.

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Metallophthalocyanine catalyzed olefination of aldehydes

Cited by 2 publications

References 25 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

Iron(II) Phthalocyanine-Catalyzed Olefination of Aldehydes with Diazoacetonitrile: A Novel Approach to Construct Alkenyl Nitriles

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