Imine containing C2-Symmetric chiral half sandwich h6-p-cymene-Ru(II)- phosphinite complexes: Investigation of their catalytic activityin the asymmetric transfer hydrogenation of ketones
Yükleniyor...
Tarih
2020-01-15
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Journal of Molecular Structure
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Attribution-NonCommercial-ShareAlike 3.0 United States
Attribution-NonCommercial-ShareAlike 3.0 United States
Özet
New chiral C2-symmetric bis(phosphinite) ligands containing imine group were synthesized from 1-({[(1R,2R)-2-{[(2-hydroxynaphthalen-1-yl)methylidene] amino}cyclohexyl]- imino}methyl)- naphthalen-2-ol and two equivalents of Ph2PCl, (i-Pr)2PCl or (Cy)2PCl, in high yields. Binuclear C2-symmetric half sandwich η6-p-cymene-Ru(II) complexes of the chiral phosphinite ligands were synthesized by treating of [Ru(η6-p-cymene)(μ-Cl)Cl]2 with the phosphinites in 1:1 M ratio in CH2Cl2. Their catalytic activities in asymmetric transfer hydrogenation (ATH) were investigated for the reaction of acetophenone derivatives with isopropyl alcohol. The corresponding optically active secondary alcohols were obtained in excellent levels of conversion (96–99%) and moderate enantioselectivity (up to 60% ee). Among three complexes investigated, complex 4 was the most efficient one.
Açıklama
Anahtar Kelimeler
Phosphinite, Phosphinite, Chiral, Chiral, Catalysis, Catalysis, Asymmetric Transfer Hydrogenation, Asymmetric Transfer Hydrogenation, Ruthenium, Ruthenium
Kaynak
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
1200
Sayı
127146
Künye
Saleh, A.N., Aral, T., Paşa, S., Kayan, C., Meriç, N., Sünkür, M., Aydemir, M., Baysal, A., Durap, F. (2020). Imine containing C2-Symmetric chiral half sandwich η6-p-cymene-Ru(II)- phosphinite complexes: Investigation of their catalytic activity in the asymmetric transfer hydrogenation of ketones. Journal of Molecular Structure, 1200 (127146), pp. 1-8. https://dx.doi.org/doi.org/10.1016/j.molstruc.2019.127146
