Zobrazeno 1 - 10
of 194
pro vyhledávání: '"Kunio Hiroi"'
Autor:
Kunio Hiroi, Takanori Sone
Publikováno v:
Current Organic Synthesis. 5:305-320
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e909433dbe8353c3aa18f0d18ce10fa
https://doi.org/10.2174/157017908786241608
https://doi.org/10.2174/157017908786241608
Publikováno v:
Tetrahedron. 60:2155-2162
New chiral ligands, N-diphenylphosphano nitrogen-containing five-membered aromatic compounds bearing chiral sulfinyl groups as the sole chiral source has been developed. The structure of a palladium intermediate derived from the new chiral sulfoxide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b2acaf42d412d376d02a62ef2cb953f
https://doi.org/10.1016/j.tet.2003.12.067
https://doi.org/10.1016/j.tet.2003.12.067
Publikováno v:
東北薬科大学研究誌. 50:117-124
Palladium-catalyzed asymmetric cycloisomerization reactions of 1, 6-enynes were successfully accomplished using chiral phosphine ligands. The steric effects of the palladium complexes of the reaction substrates with the ligands are discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::40cc9b86919b231d7568d15214431ed6
http://id.nii.ac.jp/1202/00000043/
http://id.nii.ac.jp/1202/00000043/
Autor:
Takashi, HIRASAWA, Kunio, HIROI
Publikováno v:
東北薬科大学研究誌. 50:103-108
Palladium-catalyzed intermolecular [3+2] cycloaddition reactions of vinylic cyclopropanes using acrylamides as Michael acceptors were successfully accomplished to give cyclopentane derivatives. The palladium-catalyzed reactions of vinyl-cyclopropanes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::8b60391ee0dea330c26296ebac4e3ad2
http://id.nii.ac.jp/1202/00000041/
http://id.nii.ac.jp/1202/00000041/
Publikováno v:
東北薬科大学研究誌. 50:109-115
Lewis acid-catalyzed intramolecular cycloaddition reactions of sulfonylallene-ene compounds were accomplished. The reaction proceeded with the assistance of TiCl_4 at room tempature to give [2+2] cycloaddition products in good-high yields and ene pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::fb2f50784239e7f2f1d7bafd59903617
http://id.nii.ac.jp/1202/00000042/
http://id.nii.ac.jp/1202/00000042/
Publikováno v:
Tetrahedron: Asymmetry. 14:2875-2878
Asymmetric radical carbon–carbon bond formation was achieved in chiral amide and imide systems under sulfonyl group stereocontrol, providing high diastereoselectivity. The stereochemistry of the products was determined and the mechanism of the ster
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc5cf51c6b914099c32c38293bb477b2
https://doi.org/10.1016/s0957-4166(03)00534-2
https://doi.org/10.1016/s0957-4166(03)00534-2
Autor:
Kunio Hiroi
Publikováno v:
Journal of Synthetic Organic Chemistry, Japan. 60:646-656
Our recent results of catalytic asymmetric synthesis with chiral organosulfur ligands are reviewed. We have developed new chiral ligands with various coordinatable functionalities such as chiral sulfinyl, sulfenyl, phosphinyl, phosphinoamino, 1, 3-ox
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6527ce2490c6f1cd006efb625b802f12
https://doi.org/10.5059/yukigoseikyokaishi.60.646
https://doi.org/10.5059/yukigoseikyokaishi.60.646
Publikováno v:
CHEMICAL & PHARMACEUTICAL BULLETIN. 50:372-379
New chiral sulfoxide-1,3-oxazoline ligands have been developed as chiral ligands for Lewis acid-catalyzed asymmetric Diels-Alder reactions. The use of chiral sulfinyl 1,3-oxazoline ligands in copper(II)-catalyzed asymmetric Diels-Alder reactions prov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12cc17d87527920aada1f3c73762f52e
https://doi.org/10.1248/cpb.50.372
https://doi.org/10.1248/cpb.50.372
Autor:
Kazuhiro Watanabe, Kunio Hiroi
Publikováno v:
Tetrahedron: Asymmetry. 12:3067-3071
Palladium-catalyzed asymmetric Diels–Alder reactions have been achieved with considerably high enantioselectivity by using chiral imino-phosphine ligands derived from (1S,4R)-(+)-fenchone, (1R,2R,5R)-(+)-2-hydroxy-3-pinanone derivatives, (1S,5R)-(
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4183d78bf6a563ca930710362a99f9b5
https://doi.org/10.1016/s0957-4166(01)00546-8
https://doi.org/10.1016/s0957-4166(01)00546-8
Autor:
Kunio Hiroi, Fumiko Kato
Publikováno v:
Tetrahedron. 57:1543-1550
Palladium-catalyzed reactions of diastereomerically pure chiral 2-alkynyl p -toluenesulfinates under very mild reaction conditions gave both enantiomers of optically active sulfonyl allenes in good yields with high stereospecificity. The stereochemis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d6984c02fce010068c82cba0cf033c5
https://doi.org/10.1016/s0040-4020(00)01111-x
https://doi.org/10.1016/s0040-4020(00)01111-x