Masakazu Koiwa

Synthesis of Optically Active 5-(<i>tert</i>-Butyldimethylsiloxy)-2-cyclohexenone and Its 6-Substituted Derivatives as Useful Chiral Building Blocks for the Synthesis of Cyclohexane Rings. Syntheses of Carvone, Penienone, and Penihydrone

Georges Hareau, Masakazu Koiwa, S. Hikichi et al. · Journal of the American Chemical Society · 1999 · 82 citations

Engineering, Lower-order Cyanocuprates, Cyclohexane Rings +16

Synthesis of optically active 6-amino-2-cycloheptenone as a convenient chiral building block for the preparation of 6-alkyl-2-cycloheptenone

Masakazu Koiwa, Georges Hareau, Daisuke Morizono et al. · Tetrahedron Letters · 1999 · 29 citations

Asymmetric Catalysis, Bioorganic Chemistry, Engineering +8

Optically active trans-4-(tert-butyldimethylsiloxymethyl)-5-(tert-butyldimethylsiloxy)-2-cyclohexenone as a useful chiral building block for preparation of substituted cyclohexane rings: synthesis and its highly stereoselective reaction with RCu(CN)Li

Takeshi Hanazawa, Masakazu Koiwa, Georges Hareau et al. · Tetrahedron Letters · 2000 · 22 citations

Engineering, Alkene Metathesis, Active Trans-4- +8

Asymmetric synthesis of palitantin from the (5R)-tert-butyldimethylsiloxy-2-cyclohexenone

Georges Hareau, Masakazu Koiwa, Takeshi Hanazawa et al. · Tetrahedron Letters · 1999 · 22 citations

Asymmetric Synthesis, Organic Chemistry, Stereoselective Synthesis +3

An efficient enantioselective synthesis of 1α,25-dihydroxyvitamin D3 A-ring synthon

Masakazu Koiwa, Georges Hareau, Fumie Sato · Tetrahedron Letters · 2000 · 20 citations

Natural Product Synthesis, Efficient Enantioselective Synthesis, Synthetic Chemistry +2