Zobrazeno 1 - 10
of 126
pro vyhledávání: '"Yoshihisa Miwa"'
Publikováno v:
European Journal of Organic Chemistry. 2016:541-548
A new approach to form iminoisocoumarins from readily available and stable 2-alkynylbenzamides was developed by using a tandem copper-catalyzed N-arylation and regioselective 6-endo-dig cyclization in the presence of diaryliodonium salts, a copper ca
Autor:
Akira Ando, Kazuyuki Sato, Atsushi Tarui, Takeshi Ikebata, Yoshihisa Miwa, Asuka Tahira, Masaaki Omote, Hideki Minami, Haruka Nishimura
Publikováno v:
Organic Letters. 16:2080-2083
An enantioselective Reformatsky reaction has been developed for the reaction of ethyl dibromofluoroacetate (1) with an imine. This method represents the first ligand-promoted imino-Reformatsky approach to use a halofluoroacetate. The use of an amino
Autor:
Hideki Minami, Yoshihisa Miwa, Shoji Kondo, Atsushi Tarui, Kazuyuki Sato, Akira Ando, Masaaki Omote
Publikováno v:
Tetrahedron. 69:1559-1565
A highly diastereoselective cross-coupling reaction of an α-bromo-α-fluoro-β-lactam with a wide range of aryl Grignard reagents was catalyzed by Ni/bis(oxazoline) in yields of up to 98%. The product was obtained diastereoselectively as an anti-iso
Publikováno v:
ChemInform. 47
A new approach to form iminoisocoumarins from readily available and stable 2-alkynylbenzamides was developed by using a tandem copper-catalyzed N-arylation and regioselective 6-endo-dig cyclization in the presence of diaryliodonium salts, a copper ca
Publikováno v:
European Journal of Organic Chemistry. 2010:3281-3294
Cu- and Rh-catalyzed coupling reactions of 2-azabicyclo[2.2.1]hept-5-en-3-ones (1) with arylboronic acids were successful carried out under microwave irradiation conditions and yielded N-aryl and C-aryl derivatives of 1, respectively.
Autor:
Kazuyuki Sato, Akira Ando, Hideki Minami, Masaaki Omote, Atsushi Tarui, Naoto Kawashima, Yoshihisa Miwa
Publikováno v:
Tetrahedron Letters. 51:2000-2003
The chemoselective and diastereoselective synthesis of syn-α-bromo-α-fluoro-β-lactams was achieved using the diethylzinc-mediated Reformatsky-type reaction of ethyl dibromofluoroacetate with imines. The reaction led to diastereomerically pure β-l
Publikováno v:
Helvetica Chimica Acta. 93:233-241
It was shown that dichloramine-T (1) reacted with cyclohexene in acetonitrile to give N1-(2-chlorocyclohexyl) amidine 2a and N-(2-chlorocyclohexyl)acetamide (3) via the competitive addition of acetonitrile and N-chloro-N-tosylamino anion to cyclohexe
Autor:
Hideki Minami, Rie Tokizane, Kazuo Yanada, Minoru Ishikura, Reiko Yanada, Yoshihisa Miwa, Kana Hashimoto, Yoshiji Takemoto
Publikováno v:
The Journal of Organic Chemistry. 73:5135-5138
Starting from ortho-alkynylbenzaldehydes and ortho-alkynylanilines, In(OTf)3-catalyzed synthesis of ring-condensed heteroaromatic compounds was developed via a domino intramolecular nucleophilic attack/intermolecular cycloaddition/dehydration reactio
Publikováno v:
ChemInform. 46
Aryl alkyl alkynes reacted with N-iodosuccinimide (NIS) and trimethylsilyl azide (TMSN3), leading to α,α-diazidoketones via the regioselective addition of IN3 to alkynes. Huisgen cyclization of α,α-diazidoketones generated bis-triazole compounds.
Publikováno v:
Organic letters. 17(5)
Aryl alkyl alkynes reacted with N-iodosuccinimide (NIS) and trimethylsilyl azide (TMSN3), leading to α,α-diazidoketones via the regioselective addition of IN3 to alkynes. Huisgen cyclization of α,α-diazidoketones generated bis-triazole compounds.