Výsledky vyhledávání - "Hiroshi Kanna"

New route to enantiomerically pure 4,4-Disubstituted cyclohex-2-en-1-ones: Asymmetric synthesis of (+)-mesembrine

Autor: Hiroshi Kosugi, Hisashi Uda, Yasuyuki Miura, Hiroshi Kanna

Publikováno v: Tetrahedron: Asymmetry. 4:1409-1412

Enantiomerically pure β,β-disubstituted vinyl sulfoxides undergo cycloaddition with dichloroketene to give β,β-disubstituted γ-lactones which are transformed into synthetically important 44-disubstituted cyclohex-2-enones in optically pure form.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::168313b57ad1dc5917ec2ced3d5b94cc
https://doi.org/10.1016/s0957-4166(00)80327-4

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ChemInform Abstract: A New Route to Enantiomerically Pure 4,4-Disubstituted Cyclohex-2-en-1- ones: Asymmetric Synthesis of (+)-Mesembrine

Autor: Yohei Miura, Hiroshi Kosugi, Hiroshi Kanna, Hisashi Uda

Publikováno v: ChemInform. 24

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36d8bb5b89d606414ada814f8f231b15
https://doi.org/10.1002/chin.199347299

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ChemInform Abstract: Highly Enantiospecific Synthesis of 4-Alkyl and 4,5-Dialkyl Substituted 4,5-Dihydrofuran-2(3H)-ones from Optically Active (E)- and (Z)-Alk-1-enyl p-Tolyl Sulfoxides: Application to the Synthesis of Lignan Lactones

Autor: Katsuya Tagami, Hisashi Uda, A. Takahashi, Hiroshi Kosugi, Hiroshi Kanna

Publikováno v: ChemInform. 20

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17967887e9c1df692b53a58fd9661bc8
https://doi.org/10.1002/chin.198937171

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Highly enantiospecific synthesis of 4-alkyl and 4,5-dialkyl substituted 4,5-dihydrofuran-2(3H)-ones from optically active (E)- and (Z)-alk-1-enyl p-tolyl sulphoxides: application to the synthesis of lignan lactones

Autor: Katsuya Tagami, Hiroshi Kosugi, Hisashi Uda, Akira Takahashi, Hiroshi Kanna

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :935

Stereochemically and optically pure 2-substituted ethylenic p-tolyl sulphoxides (R)-E-(4) and (R)Z-(4) undergo readily and stereospecifically an additive Pummerer rearrangement reaction with dichloroketene to give trans- and cis-β-alkyl-α,α-dichlo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1eb31d56ffec57e618351a36d916aa4
https://doi.org/10.1039/p19890000935

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Akademický článek

Autor: Kosugi, Hiroshi, Tagami, Katsuya, Takahashi, Akira, Kanna, Hiroshi, Uda, Hisashi

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1 (0300922X); May1989, Issue 5, p935-943, 9p

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Akademický článek

Contents pages.

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1 (0300922X); May1989, Issue 5, pP017-P020, 4p

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Akademický článek

Back cover.

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1 (0300922X); May1989, Issue 5, pX019-X020, 2p

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