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Dergiler / Turkish Journal of Chemistry / 2017 / Cilt: 41 - Sayı: 1

N-heterocyclic carbenes bearing a naphthyl substituent and their metal complexes: synthesis, structure, and application in catalytic transfer hydrogenation

Hayati TÜRKMEN
Aylin ATİK
Lütfiye GÖK PEZÜK
Sayfa
29–39
Yayın Tarihi
2022-11-05
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The catalysis appears to be homogeneous.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:A series of unsymmetrical imidazolinium bromides (3a d) bearing naphthyl and benzyl groups (R = CH2 C6 H2 (CH3)3 -2,4,6 (a); CH2 C6 H(CH3)4 -2,3,5,6 (b); CH2 C6 (CH3)5 (c); CH2 C6F5 (d)) at the N1 and N3 positions were successfully synthesized. [RuCl 2 (NHC)(p-cymene)] (NHC= N-heterocyclic carbene) complexes (4a d) were prepared by the reaction of [RuCl 2(p-cymene)] 2 with imidazolinium salts (3a d).
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Temel Bulgular & Veri:The new salts (3a d) and their ruthenium(II) complexes (4a d) were characterized by 1 H, 13 C, 19F NMR, and elemental analysis.
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Sonuç & Katkı:The catalysis appears to be homogeneous.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Abstract

A series of unsymmetrical imidazolinium bromides (3a d) bearing naphthyl and benzyl groups (R = CH2 C6 H2 (CH3)3 -2,4,6 (a); CH2 C6 H(CH3)4 -2,3,5,6 (b); CH2 C6 (CH3)5 (c); CH2 C6F5 (d)) at the N1 and N3 positions were successfully synthesized. [RuCl 2 (NHC)(p-cymene)] (NHC= N-heterocyclic carbene) complexes (4a d) were prepared by the reaction of [RuCl 2(p-cymene)] 2 with imidazolinium salts (3a d). The new salts (3a d) and their ruthenium(II) complexes (4a d) were characterized by 1 H, 13 C, 19F NMR, and elemental analysis. The ruthenium(II) complexes (4a d) were employed as catalysts for the transfer hydrogenation (TH) of ketones in the presence of KOH using 2-propanol as a hydrogen source and the results were compared. The best results in the transfer hydrogenation of ketones were obtained with 4b. [MCl(NHC)L] (M = Ir, L = Cp ∗ ) (5b), cod (6b); M = Rh, L= Cp ∗ (5b ), and cod (6b ) complexes were prepared and investigated in the TH of ketones. The reactivity of Rh complexes in comparison to those of Ir also appears to be somewhat better. The catalysis appears to be homogeneous.

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Bu Makaleye Atıf Yap

TÜRKMEN, H., ATİK, A., PEZÜK, L. G. (2022). N-heterocyclic carbenes bearing a naphthyl substituent and their metal complexes: synthesis, structure, and application in catalytic transfer hydrogenation. Turkish Journal of Chemistry, Cilt: 41 - Sayı: 1, 29–39. https://ajindex.com/articles/601923

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