Tamio Hayashi
Nanyang Technological University
806 Papers
8K Citations
Tamio Hayashi is an academic researcher from Nanyang Technological University. The author has contributed to research in topics: Catalysis & Enantioselective synthesis. The author has an hindex of 98, co-authored 799 publications. Previous affiliations of Tamio Hayashi include South University & Hanyang University.
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Papers
Rhodium-Catalyzed Asymmetric Synthesis of Silicon-Stereogenic Dibenzooxasilines via Enantioselective Transmetalation.
Ryo Shintani,Eleanor E. Maciver,Fumiko Tamakumi,Tamio Hayashi +3 more
- 19 Mar 2013
Electronic and steric tuning of chiral diene ligands for rhodium-catalyzed asymmetric arylation of imines
TL;DR: Rhodium-catalyzed asymmetric arylation of imines using electronically and sterically-modified chiral diene ligands gave the corresponding diarylmethylamines in high yield and with high enantioselectivity using just 0.3 mol% of catalyst.
Design and synthesis of new chiral phosphorus–olefin bidentate ligands and their use in the rhodium-catalyzed asymmetric addition of organoboroxines to N-sulfonyl imines
TL;DR: Novel chiral phosphorus-olefin bidentate ligands have been synthesized in a few steps from a readily available enantiopure compound and applied to a rhodium-catalyzed asymmetric addition of organoboroxines to N-sulfonyl aldimines achieving high yield and enantioselectivity.
Expanding the C2-symmetric bicyclo[2.2.1]hepta-2,5-diene ligand family: concise synthesis and catalytic activity in rhodium-catalyzed asymmetric addition.
TL;DR: New C2-symmetric bicyclo[2.2.1]hepta-2,5-dienes bearing methyl and phenyl substituents at the 2 and 5 positions were prepared enantiomerically pure through a two-step sequence starting from the readily available bicyclo(diene)2-dione due to the instability or volatility of these dienes.
Regioselective allylation of a grignard reagent catalysed by phosphine–nickel and –palladium complexes
TL;DR: Nickel and palladium complexes of the 1,1′-bis(diphenylphosphino)ferrocene ligand effectively catalysed the regioselective cross-coupling of allylic ethers with phenylmagnesium bromide; use of the nickel catalyst leads to carbon carbon bond formation giving the terminal alkene while the palladium catalyst gives the nonterminal alkene.