Výsledky vyhledávání - "Takuya, Murai"

Syntheses, and Structural and Physical Properties of Axially Chiral Biaryl Dicarboxylic Acids Bearing Chalcogen Atoms

Autor: Takuya, Murai, Shohei, Hamada, Yusuke, Kobayashi, Takahiro, Sasamori, Takumi, Furuta

Publikováno v: Chemical and Pharmaceutical Bulletin. 70:605-615

The preparation, optical resolution, and structural investigations of a series of axially chiral biaryl dicarboxylic acids bearing oxygen, sulfur, and selenium atoms were carried out. The crystal structures of sulfur- and selenium-containing derivati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8b9d098ff4b19ff5574b9fd46352b1f
https://doi.org/10.1248/cpb.c22-00217

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A bench-stable N-trifluoroacetyl nitrene equivalent for a simple synthesis of 2-trifluoromethyl oxazoles

Autor: Sota Masakado, Yoshiji Takemoto, Takumi Furuta, Yusuke Kobayashi, Shohei Hamada, Takuya Murai

Publikováno v: Organic & Biomolecular Chemistry. 19:6628-6632

ortho-Nitro-substituted N-trifluoroacetyl imino-λ3-iodane is a bench-stable trifluoroacetyl nitrene precursor, in which intra- and intermolecular halogen bonding (XB) plays an important role. Potential synthetic applications of this novel precursor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c81c8a1802f9da3fde24ca3911e93f2a
https://doi.org/10.1039/d1ob00947h

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One-Pot Preparation of (NH)-Phenanthridinones and Amide-Functionalized [7]Helicene-like Molecules from Biaryl Dicar-boxylic Acids

Autor: Yongning Xing, Yusuke Kobayashi, Masanori Nikaido, Takeo Kawabata, Takuya Murai, Toshifumi Kuribayashi, Shohei Hamada, Mayu Kurokawa, Elghareeb E. Elboray, Takumi Furuta, Takahiro Sasamori

A one-pot transformation of biaryl dicarboxylic acids to (NH)-phenanthridinone derivatives based on a Curtius rearrangement and subsequent basic hydrolysis was developed. This method is also applicable for the preparation of optically active amide-fu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afaa0f3e18316b40224f141137ed27bf
https://doi.org/10.26434/chemrxiv-2021-0wzfl

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Harnessing Chalcogen-bonding Interactions To Establish Conformational Control in Dirhodium(II) Paddlewheel Complexes

Autor: Takahiro Sasamori, Lu W, Yoshihiro Ueda, N. Tokitoh, Kazuhiro Morisaki, Takuya Murai, Takeo Kawabata, Toshifumi Kuribayashi, Shohei Hamada, Takumi Furuta

Novel well-defined D2-symmetric dirhodium(II) carboxylate complexes that bear axially chiral binaphthothiophene delta-amino acid derivatives have been developed. Conformational control was achieved through chalcogen-bonding interactions between sulfu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02ff4c97ba2abcfb29033e14c6b3991d
https://doi.org/10.26434/chemrxiv.12547262.v1

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Asymmetric Intramolecular C–H Insertion Promoted by Dirhodium(II) Carboxylate Catalyst Bearing Axially Chiral Amino Acid Derivatives

Autor: Takuya Murai, Takumi Furuta, Wenjie Lu, Takeo Kawabata, Xu Pei, Takahiro Sasamori, Norihiro Tokitoh

Publikováno v: Synlett. 28:679-683

A dirhodium(II) carboxylate catalyst bearing axially chiral amino acid derivatives is prepared. X-ray crystal structure analysis reveals that four of the bridging ligands are aligned in a C 2-symmetry-like conformation. This catalyst is effective in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::749f338cc4d6dcdfe96fab152adbab02
https://doi.org/10.1055/s-0036-1588674

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