K
Keiji Maruoka
Researcher at Kyoto University
Publications - 907
Citations - 24733
Keiji Maruoka is an academic researcher from Kyoto University. The author has contributed to research in topics: Catalysis & Enantioselective synthesis. The author has an hindex of 76, co-authored 885 publications receiving 22433 citations. Previous affiliations of Keiji Maruoka include Sumitomo Chemical & Nagasaki University.
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α-Chiral Acetylenes Having an All-Carbon Quaternary Center: Phase Transfer Catalyzed Enantioselective α Alkylation of α-Alkyl-α-alkynyl Esters
TL;DR: The title reaction was found to proceed by an initial base-mediated isomerization to allenyl esters and subsequent phase transfer catalyzed alkylation at the alpha position of the ester.
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Catalytic, high-speed tishchenko reaction using (2,7-dimethyl-1,8-biphenylenedioxy)bis(diisopropoxyaluminum) as a powerful bidentate catalyst
TL;DR: In this paper, the Tishchenko reaction of various aldehydes can be realized by using a powerful, bidentate aluminum catalyst, which is also applicable to the highly stereoselective intramolecular Tischchenko reduction of β-hydroxy ketones.
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Highly enantioselective phase-transfer-catalyzed alkylation of protected alpha-amino acid amides toward practical asymmetric synthesis of vicinal diamines, alpha-amino ketones, and alpha-amino alcohols.
Takashi Ooi,Mifune Takeuchi,Daisuke Kato,Yukitaka Uematsu,Eiji Tayama,Daiki Sakai,Keiji Maruoka +6 more
TL;DR: The present approach renders both enantiomers of alpha-amino amides including Weinreb amides readily available with enormous structural variation and also establishes a general and practical route to vicinal diamines, alpha- amino ketones, and alpha-AMino alcohols with the desired stereochemistry.
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Metal-free enantioselective hydroxyamination of aldehydes with nitrosocarbonyl compounds catalyzed by an axially chiral amine.
TL;DR: The first example of a highly regio- and enantioselective hydroxyamination of aldehydes with in situ generated nitrosocarbonyl compounds from hydroxamic acid derivatives was realized by combined use of TEMPO and BPO as the oxidant in the presence of a binaphthyl-modified amine catalyst.