Tsutomu Hamaoka

Reaction of alkenylboronic acids with iodine under the influence of base. Simple procedure for the stereospecific conversion of terminal alkynes into trans-1-alkenyl iodides via hydroboration

Herbert C. Brown, Tsutomu Hamaoka, N. RAVINDRAN · Journal of the American Chemical Society · 1973 · 160 citations

Halogenation, Terminal Alkynes, Engineering +11

Stereospecific conversion of alkenylboronic acids into alkenyl bromides with inversion of configuration. Striking differences in the stereochemistry of the replacement of the boronic acid substituent by bromine and iodine and its significance in terms of the reaction mechanism

Herbert C. Brown, Tsutomu Hamaoka, N. RAVINDRAN · Journal of the American Chemical Society · 1973 · 103 citations

Asymmetric Catalysis, Halogenation, Biochemistry +12

Vinylic organoboranes. 13. A convenient stereospecific synthesis of (Z)-1-halo-1-alkenes from 1-alkynes via (E)-1-alkenylborane derivatives with halogens

Herbert C. Brown, C. Subrahmanyam, Tsutomu Hamaoka et al. · The Journal of Organic Chemistry · 1989 · 77 citations

Engineering, Alkene Metathesis, Natural Sciences +12

Vinylic organoboranes. 14. A stereospecific synthesis of (E)-1-halo-1-alkenes from 1-alkynes

H. Brown, Tsutomu Hamaoka, N. RAVINDRAN et al. · The Journal of Organic Chemistry · 1989 · 70 citations

Halogenation, Alkene Metathesis, Donut Icon +10

Reaction of alkenylboronic acids with bromine in the presence of sodium methoxide and methanol. Simple one-stage synthesis of .alpha.-bromo acetals

Tsutomu Hamaoka, Herbert C. Brown · The Journal of Organic Chemistry · 1975 · 14 citations

Halogenation, .Alpha.-bromo Acetals, Simple One-stage Synthesis +10