Výsledky vyhledávání - "Masaki Nishiuchi"

One-pot synthesis of novel polysubstituted 1,1′-phenylene-bipyrrole via the double [3+2] cycloaddition reaction

Autor: Shoko Ueta, Huijun Liu, Fumitoshi Yagishita, Yasuhiko Kawamura, Masaki Nishiuchi

Publikováno v: Tetrahedron. 71:3614-3618

The novel polysubstituted 1,1′-phenylene-bipyrrole compounds were synthesized by the double [3+2] cycloaddition-extrusion reactions of N,N′-phenylene-bimunchnones and dimethyl acetylenedicarboxylate in dry toluene at 80 °C for 24 h. Bimunchnones

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::846243afb97cd4d4b9fa84ac0af8a69d
https://doi.org/10.1016/j.tet.2014.12.062

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A functionalized phosphine ligand with a pentaarylbenzene moiety in palladium-catalyzed Suzuki–Miyaura coupling of aryl chlorides

Autor: Masaki Nishiuchi, Satoshi Watanabe, Tetsuo Iwasawa, Toshinori Kamei, Yasuhiko Kawamura

Publikováno v: Tetrahedron Letters. 49:7430-7433

A functionalized phosphine with a pentaarylbenzene moiety was found to facilitate the palladium-catalyzed Suzuki–Miyaura coupling of aryl chlorides. The new ligand achieved high turnover numbers (up to TON 5000).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ebd3b689b731d4ca617df06f4ab2e6d2
https://doi.org/10.1016/j.tetlet.2008.10.071

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Synthesis of the functionalized cavitands with inwardly directed dialkylsilyl groups and phosphorous lone pairs

Autor: Yasuhiko Kawamura, Toshinori Kamei, Masaki Nishiuchi, Tetsuo Iwasawa, Yoshiki Nishimoto, Kento Hama

Publikováno v: Tetrahedron Letters. 49:4758-4762

Cavitands endowed with dialkylsilyl groups are described, involving the 1H NMR spectra of nearby δ 0 areas. The differences of chemical shifts between in- and outwardly directed alkyls toward the cavity disclosed that introverted alkyls were put und

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fabe986e560a348647e60fe6a97e6bfc
https://doi.org/10.1016/j.tetlet.2008.05.103

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ChemInform Abstract: One-Pot Synthesis of Novel Polysubstituted 1,1′-Phenylene-bipyrrole via the Double [3 + 2] Cycloaddition Reaction

Autor: Yasuhiko Kawamura, Masaki Nishiuchi, Shoko Ueta, Fumitoshi Yagishita, Huijun Liu

Publikováno v: ChemInform. 46

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1e8c44873a0217ec97ba28426496669a
https://doi.org/10.1002/chin.201537132

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The usefulness and management of intra-aortic balloon pumping for lung cancer patients with severe ischemic heart disease

Autor: Kunihiro Oyama, Takamasa Onuki, Masaki Nishiuchi, Masahide Murasugi, Masato Kanzaki, Sumio Nitta, Takayuki Tatebayashi

Publikováno v: The Journal of the Japanese Association for Chest Surgery. 16:113-116

重症冠状動脈病変を有する肺癌肺切除症例では致命的な心合併症の発生が危惧され, 手術適応, 術式の選択, 周術期管理には注意を要する.1987年7月から1998年12月までに原発性肺癌で肺切除�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c2d1d833f8eb9ab9a67ffad96e5f6fe
https://doi.org/10.2995/jacsurg.16.113

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Facile synthesis of polyhydroxycoumaronochromones with quinones: synthesis of alkylpolyhydroxy- and alkoxycoumaronochromones from 2′-hydroxyisoflavones

Autor: Yasuhiko Kawamura, Masaki Nishiuchi, Kazuyo Yamashita, Akihiro Oda, Masao Tsukayama

Publikováno v: Tetrahedron Letters. 42:6163-6166

4′,5,7-Trihydroxy- or 8-alkyl-4′,5,7-trihydroxycoumaronochromones were synthesized by oxidative cyclization of the corresponding 2′-hydroxyisoflavones with o -chloranil under mild conditions. By contrast, alkoxycoumaronochromones were synthesiz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b8ab5251a2e31253c10dffaf9a32c8f8
https://doi.org/10.1016/s0040-4039(01)01234-5

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