S
Seiji Niwa
Researcher at Ajinomoto
Publications - 35
Citations - 1695
Seiji Niwa is an academic researcher from Ajinomoto. The author has contributed to research in topics: Enantioselective synthesis & Catalysis. The author has an hindex of 12, co-authored 35 publications receiving 1663 citations. Previous affiliations of Seiji Niwa include University of Tokyo.
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Journal ArticleDOI
Enantioselective addition of organozinc reagents to aldehydes
Kenso Soai,Seiji Niwa +1 more
Journal ArticleDOI
Asymmetric self-catalytic reaction. Self-production of chiral 1-(3-pyridyl)alkanols as chiral self-catalysts in the enantioselective addition of dialkylzinc reagents to pyridine-3-carbaldehyde
TL;DR: Optically active 1-(3-pyridyl)alkanols, chiral self-catalysts, produced themselves of the same configuration in the enantioselective addition of dialkylzinc reagents to pyridine-3-carbaldehyde.
Journal ArticleDOI
Catalytic asymmetric synthesis of optically active alkynyl alcohols by enantioselective alkynylation of aldehydes and by enantioselective alkylation of alkynyl aldehydes
Seiji Niwa,Kenso Soai +1 more
TL;DR: In this article, an asymmetric synthesis of optically active secondary alkynyl alcohols by enantioselective addition of organozinc reagents to aldehydes in the presence of a small amount of catalyst was examined.
Journal ArticleDOI
Polymer-bound ephedrine as an efficient chiral catalyst for the enantioselective addition of dialkylzincs to aldehydes
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Chiral piperazine as a new chiral catalyst for the enantioselective addition of dialkyl zincs to aryl aldehydes
TL;DR: Optically active sec -alcohols in 90% enantiomeric excess were obtained from the enantioselective addition of dialkyl zincs to aryl aldehydes in the presence of a catalytic amount of dilithium salt of (2 S, 5 S )-2, 5-diisopropylpiperazine as discussed by the authors.