Asymmetric Hydrogenation of β-Keto Esters Catalyzed by Ruthenium Species Supported on Porous Organic Polymer
نویسندگان
چکیده
منابع مشابه
Highly Enantioselective Hydrogenation of a-Keto Esters Catalyzed by Ru-Tunephos Complexes Highly Enantioselective Hydrogenation of a-Keto Esters
SYNLETT 2006, No. 8, pp 1169–117215.05.2006 Advanced online publication: 10.03.2006 DOI: 10.1055/s-2006-932461; Art ID: W30605ST © Georg Thieme Verlag Stuttgart · New York Abstract: Various enantiomerically pure a-hydroxy esters were synthesized by asymmetric hydrogenation of a-keto esters catalyzed by Ru-Cn-Tunephos complex. Up to 97.1% ee has been achieved for both a-aryl and a-alkyl substitu...
متن کاملRuthenium-catalyzed asymmetric hydrogenation of N-boc-indoles.
Highly enantioselective hydrogenation of various N-Boc-indoles proceeded successfully in the presence of the ruthenium complex generated from an appropriate ruthenium precursor and a trans-chelate chiral bisphosphine PhTRAP. Various 2- or 3-substituted indoles were converted into chiral indolines with high enantiomeric excesses (up to 95% ee). The PhTRAP-ruthenium catalyst was able to promote t...
متن کاملChiral β-Amino Alcohols as Ligands for the Ruthenium-Catalyzed Asymmetric Transfer Hydrogenation of
Some chiral β-amino alcohols have been evaluated as potential ligands for the ruthenium-catalyzed asymmetric transfer hydrogenation (ATH) of N-phosphinyl ketimines in isopropyl alcohol. The ruthenium complex prepared from [RuCl2(p-cymene)]2 and (1S,2R)-1-amino-2-indanol has shown to be an efficient catalyst for the ATH of several N-(diphenylphosphinyl)imines, affording the reduction products in...
متن کاملRuthenium Catalyzed Transfer Hydrogenation
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متن کاملAcid-labile δ-ketal-β-hydroxy esters by asymmetric hydrogenation of corresponding δ-ketal-β-keto esters in the presence of CaCO3.
A series of acid-labile, optically pure ε-substituted δ-ketal-β-hydroxy esters were obtained by a Ru-SunPhos catalyzed asymmetric hydrogenation of the corresponding ε-substituted δ-ketal-β-keto esters. CaCO(3) played a dual role in the hydrogenation reaction--removing the acid generated during the formation of the catalyst and maintaining the activity of the catalyst.
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ژورنال
عنوان ژورنال: Chinese Journal of Organic Chemistry
سال: 2018
ISSN: 0253-2786
DOI: 10.6023/cjoc201709018