Výsledky vyhledávání - "Takashi Tatsuzawa"

Benzolactams. 4. Reaction of 3‘,4‘- or 4‘,5‘-Dialkoxy-Substituted 1-(2‘-Bromobenzyl)-2-ethoxycarbonyl-1,2,3,4-tetrahydroisoquinolines with Alkyllithium. 1,2 and 1,4 Additions of Alkyllithium to Benzolactams

Autor: Takashi Tatsuzawa, Masao Tokuda, Ryo Kanbayashi, Kazuhiko Orito, Mamoru Miyazawa, Hiroshi Suginome

Publikováno v: The Journal of Organic Chemistry. 65:7495-7500

Treatment of 1-(2'-bromo-3',4'-dialkoxybenzyl)-1,2,3, 4-tetrahydroisoquinoline carbamates, 1a,c, with excess alkyllithium gave 8-oxoberbines, 2a,c, which were successively attacked in situ with another molecule of alkyllithium to give 1,2 and/or 1,4

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cd2fdcaec17a0173b7947a2f157c8a1
https://doi.org/10.1021/jo000749s

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Aryl Radical Cyclizations of 1-(2‘-Bromobenzyl)isoquinolines with AIBN−Bu3SnH: Formation of Aporphines and Indolo[2,1-a]isoquinolines

Autor: Takashi Tatsuzawa, Masao Tokuda, Shiho Uchiito, Rika Harada, Kazuhiko Orito, Yoshitaka Satoh

Publikováno v: Organic Letters. 2:307-310

Radical cyclization of alkoxy-substituted 1-(2‘-bromobenzyl)-3,4-dihydroisoquinolines 1 with AIBN−Bu3SnH gave 6a,7-dehydroaporphines 2 preferentially. A steric repulsion between the respective alkoxy groups at the 7- and 3‘-positions gave 5,6-d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bb5c8e294d6b9e816bf059d6e26e9521
https://doi.org/10.1021/ol990360v

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ChemInform Abstract: Benzolactams. Part 4. Reaction of 3′,4′- or 4′,5′-Dialkoxy-Substituted 1-(2′-Bromobenzyl)-2-ethoxycarbonyl-1,2,3,4-tetrahydroisoquinolines with Alkyllithium. 1,2 and 1,4 Additions of Alkyllithium to Benzolactams

Autor: Kazuhiko Orito, Hiroshi Suginome, Ryo Kanbayashi, Takashi Tatsuzawa, Masao Tokuda, Mamoru Miyazawa

Publikováno v: ChemInform. 32

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b9f9763efe1d601330da2f1552d1c646
https://doi.org/10.1002/chin.200112151

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