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Dive into the research topics where Toshihisa Maeshima is active.

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Featured researches published by Toshihisa Maeshima.


Chemical Communications | 1997

Magnesium oxide-catalysed reaction of carbon dioxide with anepoxide with retention of stereochemistry

Takashi Yano; Hideo Matsui; Takahiro Koike; Hiroyasu Ishiguro; Hisashi Fujihara; Masakuni Yoshihara; Toshihisa Maeshima

Magnesium oxide is an efficient catalyst for the cycloaddition of ncarbon dioxide to epoxides under mild conditions; the reaction of carbon ndioxide with (R)-styrene oxide in the presence of magnesium oxide ngives (R)-phenyl carbonate in 97% ee with retention of nstereochemistry.


Tetrahedron Letters | 1992

The thermal- and photo-reactions of a diphenylphosphinite ester with 10-methylacridinium iodide. Discrimination between polar and single electron transfer processes.

Shinro Yasui; Kosei Shioji; Masakuni Yoshihara; Toshihisa Maeshima; Atsuyoshi Ohno

Abstract The thermal-reaction of isopropyl diphenylphosphinite with 10-methylacridinuim iodide results in the formation of a phosphonium ion through a polar process, whereas the reaction under the irradation of light affords 10-methylacridan as well as isopropyl diphenylphosphinate through single electron transfer (SET) from the former to the latter.


Chemical Communications | 1999

Alkane-tetrathiol induced formation of remarkably stable self-assembled monolayer and polymer films containing electroactive tetrathiafulvalene moieties on metal electrodes

Hisashi Fujihara; Hidetaka Nakai; Masakuni Yoshihara; Toshihisa Maeshima

Remarkably stable self-assembled monolayer and polymer films composed of a new tetrathiafulvalenyl-tetrathiol have been formed on metal electrodes: this is a new class of surface modification by self-assembly and electrochemical polymerization using the same alkane-tetrathiol.


Energy & Fuels | 1991

Steric requirements for the solvent swelling of Illinois No. 6 coal

Testuo Aida; Kazuhito Fuku; Masayuki Fujii; Masakuni Yoshihara; Toshihisa Maeshima; Thomas G. Squires


Synthesis | 1980

Conversion of Alcohols to Alkyl Halides using Iminium Salts

Masakuni Yoshihara; Tsunehito Eda; Keishi Sakaki; Toshihisa Maeshima


Bulletin of the Chemical Society of Japan | 1993

The Arbuzov Reaction of Alkyl Diphenylphosphinites with 10-Methylacridinium Ion. Kinetic Study on the Formation and the Decomposition of Phosphonium Intermediates

Shinro Yasui; Kosei Shioji; Masakuni Yoshihara; Toshihisa Maeshima; Atsuyoshi Ohno


Chemistry Letters | 1980

ASYMMETRIC INDUCTION IN FREE RADICAL ADDITION OF THIOLS TO l-MENTHYL CROTONATE

Masakuni Yoshihara; Hisashi Fujihara; Toshihisa Maeshima


Chemistry Letters | 1980

ENANTIOFACE-DIFFERENTIATION IN FREE RADICAL ADDITION OF THIOLACETIC ACID TO (Z)-2-OCTENE IN THE PRESENCE OF CHIRAL SUBSTANCES

Masakuni Yoshihara; Hisashi Fujihara; Akihiro Yoneda; Toshihisa Maeshima


Chemical & Pharmaceutical Bulletin | 1985

Reaction of methyl (phenylhydrazonomethylthio)acetate with sodium methoxide

Yoshio Matsubara; Toshiyuki Nakamura; Masakuni Yoshihara; Toshihisa Maeshima


Chemistry Letters | 1973

CONJUGATIVE EFFECT OF PYRIDAZINONE RING ON THE COPOLYMERIZABILITIES OF 3(2-SUBSTITUTED)6-METHYLPYRIDAZINONES WITH STYRENE

Yoshio Matsubara; Munenori Noguchi; Masakuni Yoshihara; Toshihisa Maeshima

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Masakuni Yoshihara

National Archives and Records Administration

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