Zobrazeno 1 - 4
of 4
pro vyhledávání: '"Takeo Nashima"'
Autor:
Takeo Nashima, Fumihide Ishibashi, Keiko Yamamoto, Shigeko Sasaki, Yoshimi Kitagawa, Masako Yoshikawa, Yoshinori Ichihara, Junko Nishino, Atsuko Matsuoka, Ikuko Kobayashi
Publikováno v:
Bulletin of the Chemical Society of Japan. 59:73-76
Each geometrical isomer of various substituted phenylhydrazones of ethyl pyruvate and 2,4-dinitrophenylhydrazones of some α-keto esters was isolated in a pure state. Partial isomerizations of the E-isomers of the former hydrazones to the Z-isomers t
Publikováno v:
Bulletin of the Chemical Society of Japan. 43:3540-3542
The reaction of 2-chloromethylpyridine (Ia) and its homologs, 5-ethyl- (Ib), 6-methyl- (Ic), and 4-methyl-2-chloromethylpyridine (Id), with pyridine gave the corresponding 1-(2′-pyridylmethyl)-pyridinium chlorides (II), from which, on heating with
Publikováno v:
Chemischer Informationsdienst. Organische Chemie. 2
Autor:
Masayuki Iwamoto, Takeo Nashima, Goro Yamanoze, Fumihide Ishibashi, Yoko Aihara, Sumiko Anzai
Publikováno v:
Bulletin of the Chemical Society of Japan. 50:539-540
Visible, IR, and PMR spectra of 2,4-dinitrophenylhydrazones (DNPH) of some pyruvic esters were studied. It is suggested that each α-isomer with a higher Rf-value involves an intramolecular hydrogen bond between the imino hydrogen and the ester carbo