Výsledky vyhledávání - "Yoshiro Furukawa"

Notable Effect of Fluoro Substituents in the Imino Group in Ring-Opening Polymerization of ε-Caprolactone by Al Complexes Containing Phenoxyimine Ligands

Autor: Yoshiro Furukawa, Jing-Yu Liu, Shohei Katao, Naruhito Iwasa, Michiya Fujiki, Kotohiro Nomura

Publikováno v: Organometallics. 28:2179-2187

A series of Al complexes containing phenoxyimine ligands of the types R1(R2)Al[O-2-tBu-6-{(C6F5)N═CH}C6H3] [R1, R2 = Me, Me (1a); Et, Et (1b); Me, Cl (1c)] and Me2Al[O-2-tBu-6-(ArN═CH)C6H3] [Ar = 2...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d382ef40f5f8a6de80b4cef9b3376f64
https://doi.org/10.1021/om8011882

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Ring-opening polymerization of various oxirane derivatives using organotin phosphate condensate; Selective synthesis of the polyether containing oxirane ring in the side chain

Autor: Naruhito Iwasa, Yoshiro Furukawa, Shinji Kan, Katsuhito Miura

Publikováno v: Polymer Bulletin. 61:207-216

Ring-opening polymerization (ROP) of various oxirane derivatives of the type, 2,2-R1,R2-CCH2O [R1 = H (1), CH3 (2); R2 = CH3 (a), CH2Cl (b), CH2OCH3 (c)], using organotin phosphate (Bu2SnO-Bu3PO4) condensate has been explored. The ROP of monosubstitu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83dc9027f532de603db049bb681784d6
https://doi.org/10.1007/s00289-008-0949-z

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Practical Syntheses of Chiral α-Amino Acids and Chiral Half-Esters by Kinetic Resolution of Urethane-Protected α-Amino Acid N-Carboxyanhydrides and Desymmetrization of Cyclic meso-Anhydrides with New Modified Cinchona Alkaloid Catalysts

Autor: Yasushi Miki, Masafumi Mikami, Yutaka Ishii, Ryosuke Fujimoto, Yoshiro Furukawa, Satoshi Murakami

Publikováno v: Organic Process Research & Development. 11:609-615

The large-scale applications of the kinetic resolution of urethane-protected α-amino acid N-carboxyanhydrides (UNCAs) and the desymmetrization of cyclic meso-anhydrides using modified cinchona alkaloids are described. These asymmetric reactions are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e5f9ec6c0a1d549be2147d781b6ddbbc
https://doi.org/10.1021/op700023h

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CsF in organic synthesis. Regioselective nucleophilic reactions of phenols with oxiranes leading to enantiopure β-blockers

Autor: Kazuhiro Kitaori, Hiroshi Yoshimoto, Yoshiro Furukawa, Junzo Otera

Publikováno v: Tetrahedron. 55:14381-14390

The two modes of the paths in the reaction of oxiranes with phenols are completely controlled by CsF. Glycidyl nosylate undergoes exclusive substitution at the C 1 position whereas the ring-opening (C-3 attack) occurs with epichlorohydrin, glycidol,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51f6f4a9b7ae8aa890b5873e32e47e86
https://doi.org/10.1016/s0040-4020(99)00896-0

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CsF in organic synthesis. The first and convenient synthesis of enantiopure bisoprolol by use of glycidyl nosylate

Autor: Kazuhiro Kitaori, Hiroshi Yoshimoto, Junzo Otera, Yoshiro Furukawa

Publikováno v: Tetrahedron Letters. 39:3173-3176

The regioselective substitution of glycidyl nosylate with phenols is catalyzed by CsF in the presence of K2CO3 in DMF; this reaction enables the first and convenient synthesis of enantiopure bisoprolol.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db405afe0296cff32942e7d4e9bcafd5
https://doi.org/10.1016/s0040-4039(98)00452-3

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Optically active chlorohydrins as chiral C3 and C4 building units: Microbial resolution and synthetic applications

Autor: Yoshiro Furukawa, Toshio Suzuki, Naoya Kasai

Publikováno v: Chirality. 10:682-692

Production of highly optically active C3 and C4 chlorohydrins was developed by using the bacteria stereoselectively dehalogenating and assimilating the racemic substrate: Pseudomonas sp. and Alcaligenes sp. These bacteria stereoselectively assimilate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fdae6e30c0d790214948072e4e2764d
https://doi.org/10.1002/(sici)1520-636x(1998)10:7<682::aid-chir14>3.0.co

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Enantioselective catalytic epoxidation of cinnamate esters

Autor: Luis E. Martinez, Eric N. Jacobsen, Yoshiro Furukawa, Li Deng

Publikováno v: Tetrahedron. 50:4323-4334

A broad study of the (salen)Mn(III)-catalyzed asymmetric epoxidation of cis-cinnamate esters reveals that the steric properties of the ester group have a profound influence on enantioselectivity in the epoxidation reaction, with bulkier esters afford

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc6325ab4f5afaee6533136e6b5ecf39
https://doi.org/10.1016/s0040-4020(01)89369-8

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ChemInform Abstract: Enantioselective Catalytic Epoxidation of Cinnamate Esters

Autor: Eric N. Jacobsen, Luis E. Martinez, Yoshiro Furukawa, Li Deng

Publikováno v: ChemInform. 25

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2df520f6026e557cffbf308bc971d6c4
https://doi.org/10.1002/chin.199433143

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