Tomoyuki Okabe

Total synthesis of bisabolane sesquiterpenoids, α-bisabol-1-one, curcumene, curcuphenol and elvirol: utility of catalytic enamine reaction in cyclohexenone synthesis

Hisahiro Hagiwara, Tomoyuki Okabe, Hiroki Ono et al. · Journal of the Chemical Society Perkin Transactions 1 · 2002 · 64 citations

Natural Sciences, Chemistry, Medicinal Chemistry +14

Diethylamino(trimethyl)silane-mediated direct 1,4-addition of naked aldehydes to electron-deficient olefins

Hisahiro Hagiwara, Nao Komatsubara, Hiroki Ono et al. · Journal of the Chemical Society Perkin Transactions 1 · 2001 · 30 citations

Natural Sciences, Chemistry, Organic Chemistry +3

Catalytic enamine reaction: an expedient 1,4-conjugate addition of naked aldehydes to vinylketones and its application to synthesis of cyclohexenone from Stevia purpurea

Hisahiro Hagiwara, Tomoyuki Okabe, Keisuke Hakoda et al. · Tetrahedron Letters · 2001 · 26 citations

Natural Sciences, Chemical Engineering, Chemistry +10

Conjugate addition of unmodified aldehydes: recycle of heterogeneous amine catalyst and ionic liquid

Hisahiro Hagiwara, Tsuji Sayuri, Tomoyuki Okabe et al. · Green Chemistry · 2002 · 21 citations

Natural Sciences, Chemical Engineering, Chemistry +17