Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Kunihiko Tsutsumi"'
Autor:
Kunihiko Tsutsumi, Takeshi Ohkuma, Noriyoshi Arai, Kunihiko Murata, Noriyuki Utsumi, Hironori Satoh
Publikováno v:
Organic Letters. 15:3030-3033
Enantioselective hydrogenation of alkynyl ketones catalyzed by Ru(OTf)(TsDPEN)(η(6)-p-cymene) (TsDPEN = N-(p-toluenesulfonyl)-1,2-diphenylethylenediamine) affords the propargylic alcohols in up to 97% ee. The alkynyl moieties are left intact in most
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c82239c8d9cf17b9b8405c17eb8543e
https://doi.org/10.1021/ol4012184
https://doi.org/10.1021/ol4012184
Autor:
Kunihiko Murata, Yonetatsu Matsumoto, Noriyuki Utsumi, Takeshi Ohkuma, Kunihiko Tsutsumi, Noriyoshi Arai
Publikováno v:
Advanced Synthesis & Catalysis. 354:2089-2095
The new catalyst system of RuBr2[(S,S)-xyl-skewphos][(S,S)-dpen] and potassium tert-butoxide shows high reactivity and enantioselectivity in the hydrogenation of N-arylimines [Xyl-Skewphos=2,4-bis(di-3,5-xylylphosphino)pentane, DPEN=1,2-diphenylethyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3de2f3406b9933fcb1f0439d58752527
https://doi.org/10.1002/adsc.201200464
https://doi.org/10.1002/adsc.201200464
Asymmetric Hydrogenation of Aromatic Heterocyclic Ketones Catalyzed by the MsDPEN–Cp*Ir(III) Complex
Autor:
Masahiko Watanabe, Kunihiko Tsutsumi, Kunihiko Murata, Takeshi Ohkuma, Nobuhito Kurono, Noriyoshi Arai, Noriyuki Utsumi
Publikováno v:
Heterocycles. 80(1):141-147
Asymmetric hydrogenation of aromatic heterocyclic ketones catalyzed by Cp*Ir(OTf)(Msdpen) (MsDPEN = N-(methanesulfonyl)-1,2-diphenylethylenediamine) affords the heterocyclic alcohols in 93% to > 99% ee. The reaction is conducted in a methanolic solut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81f2ff55fc7360ba58c4cad524da61d2
http://hdl.handle.net/2115/45011
http://hdl.handle.net/2115/45011
Autor:
Kunihiko Murata, Nobuhito Kurono, Noriyuki Utsumi, Takeshi Ohkuma, Kunihiko Tsutsumi, Takeaki Katayama, Noriyoshi Arai
Publikováno v:
Organic Process Research & Development. 13:625-628
Asymmetric hydrogenation of 3-quinuclidinone with RuBr2[(S,S)-xylskewphos](pica) in a base containing ethanol affords (R)-3-quinuclidinol in 88−90% ee (XylSkewphos = 2,4-bis(di-3,5-xylylphosphino)pentane, PICA = α-picolylamine). The optical purity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c237b4c4fa40a40d0e632fa0435b643
https://doi.org/10.1021/op9000302
https://doi.org/10.1021/op9000302
Autor:
Masataka Endo, Kunihiko Tsutsumi, Takao Kitahara, Y Imai, Naoyoshi Aoyama, M Kashiwa, Takashi Ohwada, Kazui Soma, Isao Takahashi
Publikováno v:
Journal of International Medical Research. 29:335-341
This prospective, phase II study was carried out to evaluate the efficacy and safety of midazolam as a sedative agent in nine critically ill Japanese patients without coma who had been admitted to an intensive care unit. An adequate level of sedation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ed6a45196a81169ff3d5c2c4505b87f
https://doi.org/10.1177/147323000102900410
https://doi.org/10.1177/147323000102900410
Autor:
Noriyoshi Arai, Noriyuki Utsumi, Masahito Watanabe, Takeshi Ohkuma, Kunihiko Murata, Kunihiko Tsutsumi
Publikováno v:
Organic Letters. 9:2565-2567
Asymmetric hydrogenation of a series of alpha-hydroxy aromatic ketones in methanol catalyzed by Cp*Ir(OTf)(MsDPEN) (MsDPEN = N-(methanesulfonyl)-1,2-diphenylethylenediamine) affords the 1-aryl-1,2-ethanediols in up to 99% ee. The reaction can be cond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2beced7c55911af4eabd364ae03cb5e1
https://doi.org/10.1021/ol070964w
https://doi.org/10.1021/ol070964w
Autor:
Kunihiko Tsutsumi, Takashi Nishikawa, Takashi Masuda, Kazui Soma, Yoshito Kamijo, Takashi Ohwada
Publikováno v:
Nihon Kyukyu Igakukai Zasshi. 8:297-305
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5abf7852f1a72ab33040e565e6446ca0
https://doi.org/10.3893/jjaam.8.297
https://doi.org/10.3893/jjaam.8.297
Publikováno v:
Kodo Keiryogaku (The Japanese Journal of Behaviormetrics). 24:112-124
We tested students with MMPI tests on their entrance into medical school, and tried to find the current features of scale scores of the tests as compared with the Japanese reference values obtained more than 25 years before. Since the data consisted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::303cd564174006f65c9dae6630bbe0e9
https://doi.org/10.2333/jbhmk.24.112
https://doi.org/10.2333/jbhmk.24.112
Autor:
Noriyoshi Arai, Noriyuki Utsumi, Hironori Satoh, Takeshi Ohkuma, Kunihiko Murata, Kunihiko Tsutsumi
Publikováno v:
ChemInform. 44
The highly enantioselective title reaction is presented for the first time and conducted with an S/C as high as 5000.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe3bf7ab9b1ca6719f949773391e3b08
https://doi.org/10.1002/chin.201347029
https://doi.org/10.1002/chin.201347029
Autor:
Noriyuki Utsumi, Noriyoshi Arai, Kunihiko Murata, Yonetatsu Matsumoto, Takeshi Ohkuma, Kunihiko Tsutsumi
Publikováno v:
ChemInform. 44
A series of imines derived from acetophenones is effectively hydrogenated with generally high yields and enantioselectivities and without any sensitivity against electronic effects.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::305318e2e614c87085348a74dc16751f
https://doi.org/10.1002/chin.201310067
https://doi.org/10.1002/chin.201310067