Zobrazeno 1 - 10
of 341
pro vyhledávání: '"Hisao Nishiyama"'
Autor:
Hisao Nishiyama, Takatoshi Sakakura, Toshihide Takemoto, Kayoko Shimozono, Katsuyuki Aoki, Yukihiro Motoyama
Publikováno v:
Molecules, Vol 16, Iss 7, Pp 5387-5401 (2011)
Bis(oxazolinyl)phenylrhodium(III) aqua complexes, (Phebox)RhX2(H2O) [X = Cl, Br], were found to be efficient Lewis acid catalysts for the enantioselective addition of allyl- and methallyltributyltin reagents to amino aldehydes. The reactions proceed
Externí odkaz:
https://doaj.org/article/56109f71d70644079a81259f7dfd60bb
Autor:
Hisao Nishiyama
Publikováno v:
Journal of Synthetic Organic Chemistry, Japan. 77:189-191
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::492ade72e8d2953e16c4b7d3fa9e7b51
https://doi.org/10.5059/yukigoseikyokaishi.77.189
https://doi.org/10.5059/yukigoseikyokaishi.77.189
Publikováno v:
Synthesis. 28:4448-4460
Asymmetric desymmetrization was demonstrated by means of transition-metal-catalyzed conjugate reduction with hydrosilanes as reductants. Chiral rhodium-bis(oxazolinyl)phenyl complexes [Rh(Phebox-R)] were found to be effective catalysts for conjugate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86663e91652824c0d1954644ee797bfb
https://doi.org/10.1055/s-0036-1590873
https://doi.org/10.1055/s-0036-1590873
Autor:
Hisao Nishiyama, Siti Rokiah Binti Mat Napi, Jun-ichi Ito, Hajime Kameo, Takahiro Ishihara, Takaki Fukuoka
Publikováno v:
Chemical communications (Cambridge, England). 55(85)
A chirality switch between novel NCN pincer Rh complexes and a related double cyclometalated NCNC Rh complex containing secondary amino groups is described. Their catalytic abilities were determined in asymmetric alkynylation of ethyl trifluoropyruva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1919c0aea42809e24090f720d88d0efe
https://pubmed.ncbi.nlm.nih.gov/31556411
https://pubmed.ncbi.nlm.nih.gov/31556411
Autor:
Yasuhiro Ohki, Yuki Shimizu, Ryoichi Araake, Mizuki Tada, W. M. C. Sameera, Jun-Ichi Ito, Hisao Nishiyama
Publikováno v:
Angewandte Chemie. 128:16053-16057
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a37abc7dfe1862c9381ecd34e8f116e
https://doi.org/10.1002/ange.201608262
https://doi.org/10.1002/ange.201608262
Autor:
Jun-ichi Ito, Yuki Shimizu, Ryoichi Araake, Hisao Nishiyama, Yasuhiro Ohki, W. M. C. Sameera, Mizuki Tada
Publikováno v:
Angewandte Chemie International Edition. 55:15821-15825
A square-planar Co4 amide cluster, Co4{N(SiMe3)2}4 (2), and an octahedral Co6 hydride cluster, Co6H8(PiPr3)6 (4), were obtained from metathesis-type amide to hydride exchange reactions of a CoII amide complex with pinacolborane (HBpin) in the absence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fbf93234c1dcc993d889a4a2cc5e168d
https://doi.org/10.1002/anie.201608262
https://doi.org/10.1002/anie.201608262
Publikováno v:
Chemistry - A European Journal. 22:16801-16804
A direct asymmetric alkynylation of ketones with new chiral CCN Rh catalysts containing N-heterocyclic carbene and oxazoline hybrid ligands is described. The catalytic reaction of fluoroalkyl-substituted ketones, ArCOCF2 X (X=F, Cl, H), with aromatic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bd9e67bd3d8aabb7a9b4731a9f223d3
https://doi.org/10.1002/chem.201603754
https://doi.org/10.1002/chem.201603754
Publikováno v:
ChemistrySelect. 1:1938-1942
The N,N,O-tridentate chiral phenanthroline ligand was employed for Cu(II)-catalyzed enantioselective α-hydroxylation of β-ketoesters with racemic Davis’ oxaziridine to provide the corresponding product. We also tried to understand the plausible m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4013ef4298b68c20b327ab0a289dd898
https://doi.org/10.1002/slct.201600449
https://doi.org/10.1002/slct.201600449
Publikováno v:
Synlett. 27:1973-1978
Nickel(II)-catalyzed enantioselective Michael addition of N-Boc-oxindole derivatives with methyl vinyl ketone was demonstrated to give the corresponding adducts having chiral all-carbon quaternary centers with up to 87% ee in the presence of axially
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b91970fc8e4975f73d1f0ada5ec84129
https://doi.org/10.1055/s-0035-1561630
https://doi.org/10.1055/s-0035-1561630
Autor:
Jun-ichi Ito, Hisao Nishiyama
Chiral pincer complexes have been widely utilized as active and selective catalysts in various asymmetric reactions including reduction, C C bond formation, and functionalization reactions. In this context, NCN pincer complexes containing bis(oxazoli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0c3a79e7c590114c955a621453dddce
https://doi.org/10.1016/b978-0-12-812931-9.00001-3
https://doi.org/10.1016/b978-0-12-812931-9.00001-3
