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3 results on '"Yugo Takano"'

1. ChemInform Abstract: Catalytic Cycloaddition of 2-Hydroxy Ketones with 1,1-Dicyanoalkenes

Author

Yuta Seo, Shinji Tsunoi, Itaru Suzuki, Ikuya Shibata, and Yugo Takano

Subjects
Metal, chemistry, visual_art, Reagent, visual_art.visual_art_medium, chemistry.chemical_element, General Medicine, equipment and supplies, Tin, Combinatorial chemistry, Cycloaddition, Catalysis
Abstract

A tin-catalyzed reaction of α-hydroxy ketones with 1,1-dicyanoalkenes produced 2-amino-4,5-dihydrofuran-3-nitriles. In the catalytic reaction, tin enolates were generated from α-hydroxy ketones as active catalytic species. The highly basic ability of the Sn-O bonds played an important role in the reactions. This tin-catalyzed reaction was highly atom-economical and required no other metal reagents.

Published
2016

2. Catalytic cycloaddition of 2-hydroxy ketones with 1,1-dicyanoalkenes

Author

Shinji Tsunoi, Yuta Seo, Itaru Suzuki, Yugo Takano, and Ikuya Shibata

Subjects
010405 organic chemistry, Chemistry, Organic Chemistry, chemistry.chemical_element, equipment and supplies, 010402 general chemistry, 01 natural sciences, Biochemistry, Cycloaddition, 0104 chemical sciences, Catalysis, Metal, Reagent, visual_art, visual_art.visual_art_medium, Organic chemistry, Physical and Theoretical Chemistry, Tin
Abstract

A tin-catalyzed reaction of α-hydroxy ketones with 1,1-dicyanoalkenes produced 2-amino-4,5-dihydrofuran-3-nitriles. In the catalytic reaction, tin enolates were generated from α-hydroxy ketones as active catalytic species. The highly basic ability of the Sn-O bonds played an important role in the reactions. This tin-catalyzed reaction was highly atom-economical and required no other metal reagents.

Published
2016

3. Catalytic conversion of lactide to optically pure heterocycles

Author

Ikuya Shibata, Aritomo Okamura, Hiroki Takahashi, Yugo Takano, and Shinji Tsunoi

Subjects
chemistry.chemical_compound, Lactide, Materials science, chemistry, General Chemical Engineering, Alkoxide, chemistry.chemical_element, Organic chemistry, General Chemistry, Tin, Nitrogen, Cycloaddition, Catalysis
Abstract

The catalytic preparation of optically pure nitrogen heterocycles was developed via cycloaddition using lactide catalyzed by tin alkoxide.

Published
2012

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