Zobrazeno 1 - 10 of 204 pro vyhledávání: '"Eiji Shirakawa"'
1
Manipulation of an electron by photoirradiation in the electron-catalyzed cross-coupling reaction
Autor: Eiji Shirakawa, Yuki Ota, Kyohei Yonekura, Keisho Okura, Sahiro Mizusawa, Sujan Kumar Sarkar, Manabu Abe
Publikováno v: Science Advances. 9
An electron has recently been shown to catalyze the cross-coupling reaction of organometallic compounds with aryl halides. In terms of green and sustainable chemistry, the electron catalysis is much more desirable than the inevitably used transition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::410ea2082f587c2e614f14b6d96c8dbf
https://doi.org/10.1126/sciadv.adh3544
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3
Alkylation of Heteroaryl Chlorides through Homolytic Aromatic Substitution by Alkyl Radicals Derived from Alkyl Formates
Autor: Yuko Ikeda, Eiji Shirakawa, Tomoya Mandai, Kyohei Yonekura
Publikováno v: Chemistry Letters. 50:1006-1010
The alkylation of heteroaryl chlorides through a homolytic aromatic substitution (HAS) mechanism was achieved by the use of alkyl formates as alkylating agents in the presence of a tert-butoxy radi...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf2bc251456e62edec7a090cd7da8695
https://doi.org/10.1246/cl.210015
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5
Chemistry of Tertiary Carbon Center in the Formation of Congested C−O Ether Bonds
Autor: Eiji Shirakawa, Hazuki Kaizawa, Yusuke Shimoharai, Toshiki Nokami, Manabu Abe, Goki Hirata, Kentarou Takeuchi, Michinori Sumimoto, Takashi Nishikata, Takashi Koike
Publikováno v: Angewandte Chemie International Edition. 60:4329-4334
Nucleophilic substitutions, including SN 1 and SN 2, are classical and reliable reactions, but a serious drawback is their intolerance for both bulky nucleophiles and chiral tertiary alkyl electrophiles for the synthesis of a chiral quaternary carbon
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::585aca36c0f61404b1b082302891a174
https://doi.org/10.1002/anie.202010697
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8
Electron-Catalyzed Cross-Coupling of Arylboron Compounds with Aryl Iodides
Autor: Tsuyoshi Teranishi, Eiji Shirakawa, Keisho Okura, Yuto Yoshida
Publikováno v: Angewandte Chemie. 130:7304-7308
Arylboroxines in combination with zinc chloride and potassium tert-butoxide were found to undergo the electron-catalyzed cross-coupling with aryl iodides to give the corresponding biaryls without the aid of transition-metal catalysis.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0780cc593d30ec24b616ac410981287
https://doi.org/10.1002/ange.201802813
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9
tert -Butoxy-Radical-Promoted α-Arylation of Alkylamines with Aryl Halides
Autor: Yuko Ikeda, Eiji Shirakawa, Ryota Ueno
Publikováno v: European Journal of Organic Chemistry. 2017:4188-4193
In the presence of a tert-butoxy radical precursor, the reaction of alkylamines with aryl halides was found to give alpha-arylated alkylamines through homolytic aromatic substitution of the halogen atoms.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7f64b9574f4beb5f6565663ba76e096
https://doi.org/10.1002/ejoc.201700548
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10
tert-Butoxide-promoted Coupling of Aryl Iodides with Arenes Using Di-tert-butyl Hyponitrite as an Initiator
Autor: Kazuya Kiriyama, Eiji Shirakawa
Publikováno v: Chemistry Letters. 46:1757-1759
The coupling reaction of aryl iodides with arenes was found to proceed under mild conditions to give biaryls through a homolytic aromatic substitution mechanism, using potassium tert-butoxide and di-tert-butyl hyponitrite as a stoichiometric promoter
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd307550442afc9283f92e700a2bd6a5
https://doi.org/10.1246/cl.170814
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