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Ferrocene based chiral binuclear η 6 ‐benzene‐Ru(II)‐phosphinite complexes: Synthesis, characterization and catalytic activity in asymmetric reduction of ketones
Author(s) -
Abdlhmed Albayati Yaser W.,
Karakaş Duygu Elma,
Meriç Nermin,
Aydemir Murat,
Durap Feyyaz,
Baysal Akın
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3919
Subject(s) - chemistry , acetophenone , phosphinite , catalysis , benzene , ferrocene , transfer hydrogenation , medicinal chemistry , ruthenocene , ruthenium , organic chemistry , electrochemistry , electrode
In the present study, a series of chiral C 2 ‐symmetric ferrocenyl based binuclear η 6 ‐benzene‐Ru(II) complexes bearing diphenylphosphinite and diisopropylphosphinite moieties have been synthesised. The new binuclear η 6 ‐benzene‐Ru(II)‐phosphinite complexes were characterised based on nuclear magnetic resonance ( 1 H, 13 C, 31 P–NMR), FT‐IR spectroscopy and elemental analysis. Then, these complexes have been screened as catalytic precursors in the transfer hydrogenation of acetophenone with 2‐propanol as both the hydrogen source and solvent in the presence of KOH. The corresponding optically active secondary alcohols were obtained in excellent conversion rates between 96 and 99% and moderate to good enantioselectivities (up to 78% ee ). The complex 5 was the most efficient catalyst among the four new complexes investigated herein.