Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Hideki Nara"'
Autor:
Hideki Nara, Hiroshi Tanimoto, Yasunori Tohjima, Hitoshi Mukai, Yukihiro Nojiri, Toshinobu Machida
Publikováno v:
Tellus: Series B, Chemical and Physical Meteorology, Vol 69, Iss 1 (2017)
We observed prominent CO enhancements with simultaneous enhancements of CO2 and CH4 around the Malay Peninsula in South-East Asia from mid-June to mid-August 2013 based on systematic shipboard observations. We identified 18 episodes of CO enhancement
Externí odkaz:
https://doaj.org/article/762ee8cc1125472b8d4964d4db5ef3b6
Publikováno v:
Atmospheric Measurement Techniques Discussions; 2/19/2024, p1-33, 33p
Publikováno v:
Organic Letters. 23:3070-3075
A highly efficient dynamic kinetic resolution of cyclic halohydrins was achieved by the asymmetric transfer hydrogenation of racemic α-haloketones. Bifunctional oxo-tethered Ru(II) catalysts could promote the reduction without deterioration of halog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f2edfd2b4e6dfafb5f2d03429855806
https://doi.org/10.1021/acs.orglett.1c00739
https://doi.org/10.1021/acs.orglett.1c00739
Publikováno v:
Organic Process Research & Development. 24:2772-2779
An Ir–oxalamidato complex in combination with a solid base (e.g., magnesium aluminometasilicate/Ca(OH)2) significantly improved the catalyst productivity in α-alkylation of methyl ketones with prim...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55dc935443ab3e54636eedf18169ffad
https://doi.org/10.1021/acs.oprd.0c00362
https://doi.org/10.1021/acs.oprd.0c00362
Publikováno v:
Organic Letters. 21(No. 24):9954-9959
A formal deoxygenative hydrogenation of amides to amines with RuCl2(NHC)(PNHP) (NHC = 1,3-dimethylimizadol-2-ylidene, PNHP = bis(2-diphenylphosphinoethyl)amine) is described. Various secondary amides, especially NH-lactams, are reduced with H2 (3.0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fa4093a29a15d9b149254bf924bd4bb
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100817180
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100817180
Autor:
Yosuke Niwa, Yousuke Sawa, Hideki Nara, Toshinobu Machida, Hidekazu Matsueda, Taku Umezawa, Akihiko Ito, Shin-Ichiro Nakaoka, Hiroshi Tanimoto, Yasunori Tohjima
The inverse analysis was used to estimate the fire carbon emission in Equatorial Asia induced by the big El Niño in 2015. This inverse analysis is unique because it extensively used high-precision atmospheric mole fraction data of carbon dioxide (CO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa63749a97eae419c46481803b2c4b59
https://doi.org/10.5194/acp-2020-1239
https://doi.org/10.5194/acp-2020-1239
Autor:
Hideki Nara, Taichiro Touge, Takao Saito, Yasuhiro Komatsuki, Kazuhiko Matsumura, Masahiro Kuwana, Shigeru Tanaka, Noboru Sayo, Yoshinobu Kashibuchi
Publikováno v:
Organic Process Research & Development. 23:452-461
The development of an efficient synthetic route for an optically active ceramide compound (d-erythro-CER[NDS]) is described. The route proceeds through asymmetric transfer hydrogenation in a pipes-in-series flow reactor with oxo-tethered ruthenium co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b77aa69ea884ef7b3ea162fe98a26aa
https://doi.org/10.1021/acs.oprd.8b00338
https://doi.org/10.1021/acs.oprd.8b00338
Autor:
Mitsuhiko Fujiwhara, Takao Ikariya, Kazuhiko Matsumura, Taichiro Touge, Hideki Nara, Yamato Yuki, Yoshihito Kayaki
Publikováno v:
Advanced Synthesis and Catalysis. 360(No. 3):568-574
A practical method for the asymmetric transfer hydrogenation of alpha-substituted ketones was developed utilizing oxo-tethered N-sulfonyldiamine-ruthenium complexes. Reduction by HCO2H and HCO2K in a mixed solvent of EtOAc/H2O allowed for the sele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfc7ca82a87ea6d00027bbb293ded1ad
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100772564
http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100772564
Autor:
Tohru Yokozawa, Nao Tamaki, Taichiro Touge, Kazuhiko Sakaguchi, Hideki Nara, Yoshihito Kayaki, Kazuhiko Matsumura
Publikováno v:
Journal of the American Chemical Society. 141(41)
A straightforward asymmetric construction of chiral fused γ- and δ-lactones containing multiple contiguous stereocenters was successfully developed by either (1) the dynamic kinetic resolution-asymmetric transfer hydrogenation (DKR-ATH) reaction us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ebd381008455a8099c907edf2118215
https://pubmed.ncbi.nlm.nih.gov/31502833
https://pubmed.ncbi.nlm.nih.gov/31502833
Autor:
Shinji Morimoto, Naohiro Kosugi, Shigeyuki Ishidoya, Tomoko Shirai, Sohiko Kameyama, Hisahiro Takashima, Fumikazu Taketani, Hideki Nara, Yosuke Niwa, Jiye Zeng, Yasunori Tohjima, Daisuke Sasano
Publikováno v:
Polar Science. 27:100571
Atmospheric CH4 mole fractions were observed aboard the R/V Mirai sailing in waters off Alaska in the Arctic Ocean in September 2012–2017 to investigate the CH4 emissions from the surrounding region, especially from the East Siberian Arctic Shelf (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c487c3e3f51fcc2c5bd23159403f7a65
https://doi.org/10.1016/j.polar.2020.100571
https://doi.org/10.1016/j.polar.2020.100571