Ryuuichirou Hayakawa

Selective synthesis of optically active 3-haloazetidin-2-ones or aziridines by the condensation of various metal enolates of α-haloacetate with a chiral imine

Tamotsu Fujisawa, Ryuuichirou Hayakawa, Makoto Shimizu · Tetrahedron Letters · 1992 · 60 citations

Active 3-Haloazetidin-2-ones, Chiral Imine, Organic Chemistry +5

Reversal of diastereofacial selectivity in the nucleophilic addition reaction to chiral N-sulfinimine and application to the synthesis of indrizidine 223AB

Yuji Koriyama, Akihiro Nozawa, Ryuuichirou Hayakawa et al. · Tetrahedron · 2002 · 42 citations

Asymmetric Catalysis, Engineering, Indrizidine 223Ab +8

Novel Carbon−Carbon Bond Formation Reaction of Methoxyallene Oxide Promoted by TiI₄

Ryuuichirou Hayakawa, Makoto Shimizu · Organic Letters · 2000 · 41 citations

Materials Science, Inorganic Chemistry, Chemical Engineering +13

Synthesis of Chiral Epoxides from Aldehydes Using Sulfur Ylide Derived from Reduced Product of Bakers' Yeast Reduction

Ryuuichirou Hayakawa, Makoto Shimizu · Synlett · 1999 · 36 citations

Chiral Epoxides, Engineering, Yeast Reduction +9

Reduction of 1,2-diketones with titanium tetraiodide: a simple approach to α-hydroxy ketones

Ryuuichirou Hayakawa, Tetsuya Sahara, Makoto Shimizu · Tetrahedron Letters · 2000 · 35 citations

Chemical Engineering, Engineering, Titanium Tetraiodide +7