The Synthesis of α,β-Ynones and Diaryl Ketones by Palladium Nanoparticles Immobilized on the Magnetic Chitosan Support

Rafiee, Fatemeh; Kermani, Sahar

doi:10.1007/s40995-021-01156-7

Cited by 2 publications

(2 citation statements)

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“…They claimed that active Pd(0) nanoparticles participate in a releasing‐rupturing cycle from the resin during the reaction. Rafiee and Kermani reported the synthesis of a,b‐ynones and diaryl ketones by palladium nanoparticles immobilized on the magnetic chitosan [27] . Synthesis of ynones and γ‐butenolides from aryl iodides, aryl acetylenes, and Pd‐difluorocarbene complex has recently been reported [28]…”

Section: Introductionmentioning

confidence: 99%

“…Rafiee and Kermani reported the synthesis of a,b-ynones and diaryl ketones by palladium nanoparticles immobilized on the magnetic chitosan. [27] Synthesis of ynones and γ-butenolides from aryl iodides, aryl acetylenes, and Pd-difluorocarbene complex has recently been reported. [28] Cope et al [29] first introduced palladacycles as a paramount class of palladium complexes and as bidentate ligands.…”

Section: Introductionmentioning

confidence: 99%

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Oxime Palladacycle Supported on Magnetic Meoporous Silica: An Efficient Catalyst for Copper‐Free Acyl Sonogashira Reaction

Ghahramani,

Mansoori,

John

2024

ChemNanoMat

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The catalytic activity of the supported bis(oxime palladacycle) catalyst was evaluated in the acyl Sonogashira reaction. The reaction conditions, such as solvent, base, and palladium content, were screened to achieve the best catalytic performance. Tetrahydrofuran (THF) solvent, triethylamine (Et3N) base, and the reaction temperature of 110°C were found to be ideal for achieving high yields of the desired products. Furthermore, a catalyst loading of only 0.22 mol% palladium was sufficient to achieve good conversion. Broad ranges of aryl acetylenes and benzoyl chlorides were successfully coupled to give the desired acetylenic ketones. The reaction appeared to proceed efficiently using a small amount of catalyst. The magnetic property of the catalyst allowed for easy separation using an external magnet. The catalyst was stable and reused for multiple reaction runs without a significant deactivation. After seven cycles, the catalyst maintained over 90% of its initial catalytic activity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%