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• W2335367423 endingPage "11044" @default.
• W2335367423 startingPage "11039" @default.
• W2335367423 abstract "The asymmetric transfer hydrogenation of aromatic ketones can be efficiently accomplished using catalysts that are based on platinum group metals which are more toxic and less abundant than iron. For that reason the discovery of iron based catalysts for the use in this transformation is important. To address this issue, we synthesized a new series of iron(II)-based precatalysts trans-[Fe(Br)(CO)(PPh2CH2CH═NCHRCHRN═CHCH2PPh2)]BPh4 (5a−5d) containing P−N−N−P ligands with the diamines (R,R)-1,2-diaminocyclohexane (a), (R,R)-1,2-diphenyl-1,2-diaminoethane (b), (R,R)-1,2-di(4-methoxyphenyl)-1,2-diaminoethane (c), and ethylenediamine (d) incorporated in the backbone using a convenient one-pot synthesis using readily available starting materials. All of the complexes, when activated with a base, show a very high activity in the transfer hydrogenation catalysis of acetophenone, using 2-propanol as a reducing agent under mild conditions. A comparison of the TOF of complexes 5a−5d show that the catalytic activity of complexes increase as the size of the substituents in the backbone of ligands increases (d < a < b = c)." @default.
• W2335367423 created "2016-06-24" @default.
• W2335367423 creator A5030243565 @default.
• W2335367423 creator A5039634682 @default.
• W2335367423 date "2010-11-10" @default.
• W2335367423 modified "2023-10-14" @default.
• W2335367423 title "Effect of the Structure of the Diamine Backbone of P−N−N−P ligands in Iron(II) Complexes on Catalytic Activity in the Transfer Hydrogenation of Acetophenone" @default.
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• W2335367423 doi "https://doi.org/10.1021/ic101548j" @default.
• W2335367423 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21067160" @default.
• W2335367423 hasPublicationYear "2010" @default.
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