Výsledky vyhledávání - "Takenori Omata"

Reactions of sterically congested 1,6- and 1,7-bis(diazo)alkanes with elemental sulfur and selenium: Formation of cyclohexene, 1,2-dithiocane, 1,2-diselenocane, and 1,2,3-triselenecane derivatives

Autor: Ken Furusawa, Takenori Omata, Juzo Nakayama, Akihiko Ishii

Publikováno v: Heteroatom Chemistry. 13:351-356

The reaction of 3,8-bis(diazo)-2,2,4,4,7,7,9,9-octamethyldecane (5) with elemental selenium in 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) at 130°C yielded 1,2-di-tert-butyl-3,3,6,6-tetramethylcyclohexene (1) (64%) and trans-3,8-di-tert-butyl-4,4,7,7-t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::042539c3babddccf6ee51d677b74fee7
https://doi.org/10.1002/hc.10046

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Formation, Structure, and Thionation of 1,2,4,5-Tetrathianes [cis- andtrans-3,6-Bis(1,1,3,3-tetramethyl-4-oxo-4-phenylbutyl)-1,2,4,5-tetrathianes]

Autor: Takenori Omata, Akihiko Ishii, Kazuyo Umezawa, Juzo Nakayama

Publikováno v: Bulletin of the Chemical Society of Japan. 73:729-737

2,2,4,4-Tetramethyl-1-phenyl-6,7-dithiabicyclo[3.1.1]heptane was treated with 2KHSO5·KHSO4·K2SO4 to yield cis- and trans-3,6-bis(1,1,3,3-tetramethyl-4-oxo-4-phenylbutyl)-1,2,4,5-tetrathianes. The formation mechanism of the tetrathianes is discussed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6831c9f250dc73da1c4c2f9c69d2c4c
https://doi.org/10.1246/bcsj.73.729

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Synthesis and Physical Properties of Sterically Congested Cycloalkenes, 1,2-Di-tert-butyl-3,3,5,5-tetramethylcyclopentene and 1,2-Di-tert-butyl-3,3,6,6-tetramethylcyclohexene

Autor: Chie Tsuchiya, Takahiro Shimada, Akihiko Ishii, Ken Furusawa, Juzo Nakayama, and Takenori Omata

Publikováno v: The Journal of Organic Chemistry. 65:1799-1806

Two sterically congested cycloalkenes (9 and 10), congeners of tetra-tert-butylethylene, were synthesized and characterized. Oxidation of the bicyclic 1,3-dithietane 8 with dimethyldioxirane (DMD) gave the endo,endo-disulfoxide 13, thermal isomerizat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f053ddec6cc3962050d12a38e3dd2662
https://doi.org/10.1021/jo991760z

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ChemInform Abstract: Formation, Structure, and Thionation of 1,2,4,5-Tetrathianes [cis- and trans-3,6-Bis (1,1,3,3-tetramethyl-4-oxo-4-phenylbutyl)-1,2,4,5-tetrathianes]

Autor: Kazuyo Umezawa, Takenori Omata, Juzo Nakayama, Akihiko Ishii

Publikováno v: ChemInform. 31

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d13b1a8ba342a5be98fd3142f4c83b0
https://doi.org/10.1002/chin.200027165

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ChemInform Abstract: Synthesis and Physical Properties of Sterically Congested Cycloalkenes, 1,2-Di-tert-butyl-3,3,5,5-tetramethylcyclopentene and 1,2-Di-tert-butyl-3,3,6,6-tetramethylcyclohexene

Autor: Chie Tsuchiya, Ken Furusawa, Takahiro Shimada, Akihiko Ishii, Juzo Nakayama, Takenori Omata

Publikováno v: ChemInform. 31

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05dd46cba583141a4f45a4cc334401f1
https://doi.org/10.1002/chin.200027079

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ChemInform Abstract: Reactions of Sterically Congested 1,6- and 1,7-Bis(diazo)alkanes with Elemental Sulfur and Selenium: Formation of Cyclohexene, 1,2-Dithiocane, 1,2-Diselenocane, and 1,2,3-Triselenecane Derivatives

Autor: Ken Furusawa, Juzo Nakayama, Akihiko Ishii, Takenori Omata

Publikováno v: ChemInform. 33

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99ab9418854d66aa8a42d6a8ea4ec099
https://doi.org/10.1002/chin.200238042

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