Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Mutsuo, Okamura"'
Publikováno v:
Bulletin of the Chemical Society of Japan. 82:254-260
Substituent effects on the acetolysis rates of 2-aryl-1-cyano-1-(trifluoromethyl)ethyl trifluoromethanesulfonates (α-OTf) and 2-aryl-2-cyano-2-(trifluoromethyl)ethyl trifluoromethanesulfonates (β-O...
Autor:
Tatsuhisa Kato, Karl M. Kadish, Takeshi Akasaka, Yutaka Maeda, Takatsugu Wakahara, Shingo Okubo, Kaoru Kobayashi, Mutsuo Okamura, Yuko Iiduka, Takahiro Tsuchiya, Shigeru Nagase, Akihiro Sakuraba
Publikováno v:
Chemical Physics Letters. 398:553-556
The redox property of Sc 3 @C 82 is investigated by using disilirane as a chemical probe. The redox potential of Sc 3 @C 82 in o -dichlorobenzene shows a high reactivity attributable to its high electron-accepting and -donating ability. No ESR signal
Autor:
Mutsuo Okamura, Kaoru Kobayashi, Masahiro Kako, Karl M. Kadish, Michio Yamada, Tatsuhisa Kato, Yutaka Maeda, Takahiro Tsuchiya, Markus Waelchli, Takeshi Akasaka, Takatsugu Wakahara, Shigeru Nagase, Kazunori Yamamoto, Jun-Ichi Kobayashi
Publikováno v:
Journal of the American Chemical Society. 126:4883-4887
Ce@C(82) is isolated by high-performance liquid chromatography (HPLC) and the cage symmetry is determined as C(2)(v)() by measuring the (13)C NMR spectra of its anion. The (13)C NMR peaks of [Ce@C(82)](-) show temperature-dependent shifts ascribed to
Autor:
Yutaka Maeda, Takatsugu Wakahara, Takeshi Akasaka, Shigeru Nagase, Soichi Sato, Masahiro Kako, Mutsuo Okamura, G. M. Aminur Rahman, Kaoru Kobayashi
Publikováno v:
The Journal of Organic Chemistry. 68:6791-6794
A photochemical reaction of C(60) with disilane in a 2:3 ratio affords the isomer mixture of the tetrakis-adduct of C(60)((t)BuPh(2)Si)(4) as the major product. The use of a three-stage HPLC separation system isolated three of their isomers. Their st
Autor:
Ernst Horn, Takeshi Akasaka, Masahiro Kako, Yutaka Maeda, Kaoru Kobayashi, Mutsuo Okamura, Ryu Sato, Mamoru Fujitsuka, Yasuhiro Nakadaira, Osamu Ito, Takatsugu Wakahara, Shigeru Nagase
Publikováno v:
Journal of Organometallic Chemistry. 611:414-419
The photochemical reaction of disilirane with unsaturated compounds such as nitrile, ketone and aldehyde in the presence of C60 with a halogen lamp (cutoff
Autor:
Toshiyasu Suzuki, Takuya Kondo, Yoshitaka Hamada, Yasuhiro Nakadaira, Masahiro Kako, Takatsugu Wakahara, Mutsuo Okamura, Takeshi Akasaka
Publikováno v:
ResearcherID
The photoreaction of polysilanes and cyclic oligosilanes with C60 has been investigated. Photoirradiation of a solution of C60 and polysilanes in benzene in a degassed quartz tube at 20°C with a low-pressure mercury-arc lamp has afforded the C60–p
Publikováno v:
Tetrahedron: Asymmetry. 9:2725-2737
Treatment of baker's yeast with phenacyl chloride in an aqueous–organic solvent has been proven to be an effective method of inhibiting the enzymes that afford (S)-enantiomers of α-hydroxy esters in the reduction of α-keto esters. The procedure i
Publikováno v:
Bulletin of the Chemical Society of Japan. 71:927-932
Peak oxidation potentials of acyclic and cyclic phosphinites, phosphonites, and phosphites were measured by cyclic voltammetry. The inductive effect of the ligands attached to the phosphorus is a primary factor to determine of these compounds. The ge
Autor:
Atsuyoshi Ohno, Sander Hornes, Duc Hai Dao, Kaoru Nakamura, Kouichi Hida, Mutsuo Okamura, Takeshi Akasaka, Yasushi Kawai
Publikováno v:
Bulletin of the Chemical Society of Japan. 71:425-432
Alkyl 2-oxo-4-phenylbutyrates are reduced to the corresponding alkyl (R)-2-hydroxy-4-phenylbutyrates, versatile chiral building blocks in organic synthesis, in high chemical yield (80—90%) with excellent stereoselectivity ( > 90%ee). The reaction h
Publikováno v:
Journal of the American Chemical Society. 120:1186-1192
1,4,6,7-Tetrahydro-1,6,11-trimethyl-5-oxo-5H-benzo[c]pyrido[2,3-e]azepin (11Me-MMPAH) and its 4-mono- and 4,4-dideuterated analogues have been oxidized with a series of p-benzoquinones. The compoun...