Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Yoshimasa Fukazawa"'
Autor:
Takeharu Haino, Shinji Tafuku, Yoshihiko Sato, Hajime Iwamoto, Wataru Katagiri, Eiji Tayama, Yoshimasa Fukazawa, Wataru Takizawa, Eietsu Hasegawa
Publikováno v:
ChemInform. 47
[5]Catenanes were synthesized by olefin metathesis dimerization. The reaction of pseudorotaxanes, which were derived from a [2]catenane and one equivalent of an ammonium salt bearing two terminal olefins in dichloromethane, with a catalytic amount of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b6295276f1427ec09a857eec6e23c34
https://doi.org/10.1002/chin.201608064
https://doi.org/10.1002/chin.201608064
Publikováno v:
Supramolecular Chemistry. 22:815-826
The tether-assisted synthesis of [3]rotaxane by olefin metathesis has been studied in detail. Bis(crown ether)s, in which two crown ethers are connected by a linker, were threaded onto ammonium salts bearing a terminal olefin to form pseudorotaxanes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b06af8a7540ff7fc12b8bd02248ff934
https://doi.org/10.1080/10610278.2010.514611
https://doi.org/10.1080/10610278.2010.514611
Publikováno v:
Tetrahedron. 65:7259-7267
The synthesis of calix[4]arene-based molecular containers 1 and 2 along with the thermodynamic behaviors of cation binding are reported. The containers encapsulated N -methylpicolinium salts to form 1:1 host–guest complexes in chloroform. The therm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c12a8f6d73ef305bc5c8eef1602e1a
https://doi.org/10.1016/j.tet.2009.01.021
https://doi.org/10.1016/j.tet.2009.01.021
Publikováno v:
Tetrahedron Letters. 49:277-280
Molecular tweezers 1b having two alkyl thiol chains were prepared. Intramolecular cyclization of the thiols under oxidative conditions afforded tweezers 2b containing a disulfide bond. X-ray crystal analysis and temperature dependent 1 H NMR spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f27f0781a26ee6ccfb4aafe69f13a22
https://doi.org/10.1016/j.tetlet.2007.11.056
https://doi.org/10.1016/j.tetlet.2007.11.056
Publikováno v:
Supramolecular Chemistry. 20:51-57
Calix[5]arene-based artificial receptor 1 capped with chiral macrocycle 6 was synthesized and showed strong binding towards ethyltrimethylammonium derivatives via cation/π and/or hydrogen bonding interactions. The calix[5]arene cavity provided the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac113772970f959629d71a49e2ec5d68
https://doi.org/10.1080/10610270701742553
https://doi.org/10.1080/10610270701742553
Autor:
Takamoto Kawaguchi, Koji Yamada, Tsutomu Okuda, Yoshimasa Fukazawa, Hiroshi Ohki, Takeharu Haino
Publikováno v:
Journal of Molecular Structure. 833:108-113
Structure and guest dynamics of the p - t -butylcalix[4]arene derivative including aromatic molecule (benzene and pyridine) were studied by means of single-crystal XRD and solid state NMR. The single-crystal XRD studies on these compounds at 130 K sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46dd3e03cfdf1bd7a05c988018901cfd
https://doi.org/10.1016/j.molstruc.2006.09.010
https://doi.org/10.1016/j.molstruc.2006.09.010
Publikováno v:
Tetrahedron. 63:652-665
Six types of isoxazoles including 60 molecules were synthesized using combinatorial synthesis on solid support in a parallel fashion. Highly regioselective 1,3-dipolar cycloaddition of the nitrile oxides to the triple bond of the solid-attached ethyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af635925d4489c2714310434803bf6df
https://doi.org/10.1016/j.tet.2006.11.005
https://doi.org/10.1016/j.tet.2006.11.005
Autor:
Yoshimasa Fukazawa, Yoshihiko Sato, Wataru Takizawa, Wataru Katagiri, Eietsu Hasegawa, Hajime Iwamoto, Shinji Tafuku, Takeharu Haino, Eiji Tayama
Publikováno v:
Chemical communications (Cambridge, England). 52(2)
[5]Catenanes were synthesized by olefin metathesis dimerization. The reaction of pseudorotaxanes, which were derived from a [2]catenane and one equivalent of an ammonium salt bearing two terminal olefins in dichloromethane, with a catalytic amount of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4987f4dd77316ac1cf8088b10da23661
https://pubmed.ncbi.nlm.nih.gov/26515104
https://pubmed.ncbi.nlm.nih.gov/26515104
Publikováno v:
Organic Letters. 8:3545-3548
[reaction: see text] A new double calix[5]arene successfully extracts higher fullerenes from fullerene mixtures. The syn isomer of the double calix[5]arene selectively captures higher fullerenes from fullerene mixtures. The elevation of the temperatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1662e20ba619c8390d1bf393bf303f67
https://doi.org/10.1021/ol061269b
https://doi.org/10.1021/ol061269b
Publikováno v:
Bulletin of the Chemical Society of Japan. 79:914-920
A combination of NMR analysis and molecular mechanics calculations has succeeded in the determination of the stereostructure of flexible briarane diterpenoids. The molecular mechanics calculations ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a06a884f414edfba09ba29a1d80edb91
https://doi.org/10.1246/bcsj.79.914
https://doi.org/10.1246/bcsj.79.914