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Your search keyword '"Hidemitsu Uno"' showing total 7 results
Start Over Author "Hidemitsu Uno" Publisher royal society of chemistry
7 results on '"Hidemitsu Uno"'

1. A new facet of the reaction of nitro heteroaromatic compounds with ethyl isocyanoacetate

Author

Hidemitsu Uno, Kazuo Ono, Takashi Murashima, Ken-ichi Fujita, Noboru Ono, and Takuji Ogawa

Subjects
chemistry.chemical_compound, Pyrimidine, chemistry, Nitro, Organic chemistry
Abstract

Nitre heteroarenes react with ethyl isocyanoacetate in the presence of 1,8-diazabicyclo[5.4.0]undecene (DBU) to give pyrroles or pyrimidine N-oxide depending on the structure of the starting nitro compounds. For example, 4-nitro-2,1,3-benzothiadiazole 3a reacted with ethyl isocyanoacetate to give ethyl 2,1,3-benzothiadiazole[3,4-c]pyrrole-2-carboxylate 4a (33%), while a similar reaction with 5-nitro-2,1,3-benzothiadiazole 3b gave the corresponding compound 4b (21%) as a sole product. A plausible mechanism for these reactions is presented.

Published
1996

2. Identification of geometrical isomers using vibrational circular dichroism spectroscopy: a series of mixed-ligand complexes of diamagnetic Co(iii) ionsElectronic supplementary information (ESI) available: The results of chromatographic resolution of [Co(tfac)2(acac)], the 1H NMR data of the isomers of [Co(tfac)n(acac)3−n)], chiral chromatographic resolution of [Co(tfac)n(acac)3−n], the circular dichorism spectra of Δ- or Λ-[Co(tfac)n(acac)3−n], the values of and Δ, the value of for IR; Vibrational circular dichroism of calculated Δ-Co(acac)3and observed Co(acac)3. CCDC reference number 789701. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0dt01342k

Author

Hisako Sato, Hidemitsu Uno, and Haruyuki Nakano

Subjects
*VIBRATIONAL circular dichroism, *SPECTRUM analysis, *LIGANDS (Chemistry), *COMPLEX compounds, *CARBON monoxide, *INFRARED spectra, *MOLECULAR structure, *CHROMATOGRAPHIC analysis
Abstract

Vibrational circular dichroism (VCD) spectra were measured on the chloroform solutions of a series of mixed-ligand diamagnetic Co(iii) complexes, [Co(tfac)n(acac)3−n] (n= 0–3, tfac = 1,1,1-trifluoro-2,4-pentanedionato; acac = acetylacetonato). Distinct differences were observed in the VCD spectra among the geometrical isomers of the same ligand composition. Such differentiation was hardly possible by their infra-red spectra alone. The structural identification of these isomers was performed in conjunction with DFT calculations. [ABSTRACT FROM AUTHOR]

Published
2011
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3. Soluble precursors of 2,3-naphthalocyanine and phthalocyanine for use in thin film transistors.

Author

Atsuko Hirao, Taiji Akiyama, Tetsuo Okujima, Hiroko Yamada, Hidemitsu Uno, Yoshimasa Sakai, Shinji Aramaki, and Noboru Ono

Subjects
SURFACES (Technology), PHTHALOCYANINES, THIN films, SOLID state electronics
Abstract

Soluble precursors of 2,3-naphthalocyanine (Nc) and phthalocyanine (Pc) were prepared and were converted into insoluble semiconducting thin films of Pc and Nc by heating after fabrication via spin-coating. [ABSTRACT FROM AUTHOR]

Published
2008
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4. Ruthenium-catalysed linear-selective allylic alkylation of allyl acetates.

Author

Motoi Kawatsura, Fumio Ata, Shohei Wada, Shuichi Hayase, Hidemitsu Uno, and Toshiyuki Itoh

Subjects
RUTHENIUM, ALKYLATION, CHEMICAL reactions, HYDROCARBONS
Abstract

The regioselectivity in the ruthenium-catalysed allylic alkylation of mono substituted allyl acetates with the malonate anion was highly controlled by Ru3(CO)12 with 2-(diphenylphosphino)benzoic acid, and the linear-type alkylated product was obtained. [ABSTRACT FROM AUTHOR]

Published
2007
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