H. Nagashima

Synthesis of formamidines from carbodiimides with sodium borohydride in isopropanol.

Kenji Kaji, Hiromitsu Matsubara, H. Nagashima et al. · Chemical and Pharmaceutical Bulletin · 1978 · 27 citations · Full text

Natural Sciences, Biochemistry, Organometallic Chemistry +2

Synthesis of chiral 1,2-diols and related compounds of biological activities via stepwise ring fission of 5-alkyl-6,8-dioxabicyclo[3.2.1]octane skeleton

Yukio Masaki, Yuzuru Serizawa, Kinnosuke Nagata et al. · Tetrahedron Letters · 1986 · 25 citations · Full text

Natural Sciences, Chemistry, Medicinal Chemistry +11

Synthesis of pyridazino(4,5-e)(1,3,4)thiadiazines and the ring contraction to pyrazolo(3,4-d)pyridazines through extrusion of sulfur.

Kenji Kaji, H. Nagashima, SIGETO NAGAO et al. · Chemical and Pharmaceutical Bulletin · 1984 · 22 citations

Natural Sciences, Chemistry, Medicinal Chemistry +15

3‐Alkylthio and 3‐aminopyrazolo[3,4‐<i>D</i>]pyridazines. Ring contraction of pyridazino[4,5‐<i>e</i>][1,3,4]thiadiazines <i>via</i> extrusion of sulfur

Kenji Kaji, H. Nagashima, Yasushi Ohhata et al. · Journal of Heterocyclic Chemistry · 1985 · 21 citations

Natural Sciences, Chemistry, Medicinal Chemistry +16

Synthesis of Pyrazolo[3,4-d]pyridazine Derivatives — Two Comparable Approaches, Ring Contraction through Extrusion of Sulphur and Photochemical Cyclisation

Hirohisa Oda, Kenji Kaji, H. Nagashima et al. · Heterocycles · 1984 · 18 citations · Full text

Natural Sciences, Chemistry, Medicinal Chemistry +16