Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Yasuko Kamochi"'
Autor:
Toshinobu Masuda, Chiyomi Murata, Hitoshi Nohta, Hideyuki Yoshida, Masatoshi Yamaguchi, Akira Takadate, Yasuko Kamochi, Kenichiro Todoroki
Publikováno v:
CHEMICAL & PHARMACEUTICAL BULLETIN. 53:750-758
To improve the fluorescence characteristics, especially emission wavelength, of coumarins, various 3-substituted-6-methoxycoumarin derivatives were synthesized, and then benzocoumarin derivatives were also synthesized in expectation of the shift to t
Autor:
Yasuko Kamochi, Tadahiro Kudo
Publikováno v:
YAKUGAKU ZASSHI. 120:245-255
This review deals with the rapid reduction of a variety of organic functionalities, including a new selective reduction of carboxylic acid, with samarium diiodide in the presence of additives under mild conditions. The single electron donor ability o
Autor:
Yasuko Kamochi, Tadahiro Kudo
Publikováno v:
Tetrahedron Letters. 41:341-344
The facile selective reduction of carboxylic acids in the presence of an aldehyde or that bearing a formyl group proceeded smoothly with a samarium diiodide–lanthanide triflate–methanol–base system at room temperature to give the corresponding
Autor:
Tadahiro Kudo, Yasuko Kamochi
Publikováno v:
Tetrahedron Letters. 35:4169-4172
Phenol was rapidly reduced with samarium diiodide-base system in the presence of protic solvent at room temperature to afford 3-cyclohexen-1-ol accompanied by cyclohexanol. The similar reduction of 4-methoxyphenol and 2-naphthol gave 4-hydroxycyclohe
Autor:
Tadahiro Kudo, Yasuko Kamochi
Publikováno v:
Journal of Synthetic Organic Chemistry, Japan. 52:285-294
Recent study in this laboratory is reviewed The single electron donor ability of samarium diiodide (SmI2) can be enhanced with ligands around of Sm (II) when a sufficient electron is supplied from ligands. Mechanistic consideration of this enhancemen
Autor:
Tadahiro Kudo, Yasuko Kamochi
Publikováno v:
Chemistry Letters. 22:1495-1498
Aromatic carboxylic acids, esters, amides, nitriles, chlorides, ketones and nitro compounds were rapidly reduced by the samarium diiodide–H2O system to the corresponding products at room temperatur...
Autor:
Yasuko Kamochi, Tadahiro Kudo
Publikováno v:
NIPPON KAGAKU KAISHI. :500-506
著者らは,ヨウ化サマリウム(II)単独では還元反応が進行しないカルボン酸がプロトン性溶媒存在下,酸または塩基の添加により室温で速やかに収率よくアルコールに還元されることを先に
Autor:
Yasuko Kamochi, Tadahiro Kudo
Publikováno v:
ChemInform. 23
Carboxylic acids were immediately reduced with samarium diiodide in the presence of protic solvent under the basic medium at room temperature to the corresponding alcohols in good yields. The similar reaction of sodium benzoate in the absence of prot
Autor:
Tadahiro Kudo, Yasuko Kamochi
Publikováno v:
ChemInform. 23
Ester, anhydride, amide, oxime and carbonyl compound were reduced to the corresponding alcohols as the major products with samarium diiodide under basic medium at room temperature.
Autor:
Yasuko Kamochi, Tadahiro Kudo
Publikováno v:
ChemInform. 25
Aromatic carboxylic acids, esters, amides, nitriles, chlorides, ketones and nitro compounds were rapidly reduced by the samarium diiodide–H2O system to the corresponding products at room temperatur...