Zobrazeno 1 - 10
of 237
pro vyhledávání: '"Kozo Toyota"'
Publikováno v:
Results in Chemistry, Vol 4, Iss , Pp 100487- (2022)
A variety of 2-substituted benzo[b]thiophenes were prepared from o-(alkylsulfanyl)(ethynyl)benzenes in the presence of silica gel under thermal conditions. Tertiary alkyl-substituted sulfanyl derivatives gave good results. Methylsulfanyl-substituted
Externí odkaz:
https://doaj.org/article/c4f8500060754703af50db80883ae1c7
Publikováno v:
Synlett. 32:1826-1832
Four isomers of 4,7′-bibenzothiophene scaffolds bearing two different halogen (Br, Cl) and triisopropylsilyl substituents have been synthesized from the two multihalobenzo[b]thiophenes via iodoselective Miyaura borylation reaction using potassium b
Autor:
Taku Shoji, Shunji Ito, Shuhei Sugiyama, Tetsuo Okujima, Takanori Araki, Kozo Toyota, Ryuta Sekiguchi, Akira Ohta
Publikováno v:
The Journal of Organic Chemistry. 82:1657-1665
Tetrathiafulvalene (TTF) derivatives with 2-azulenyl substituents 5-11 were prepared by the palladium-catalyzed direct arylation reaction of 2-chloroazulenes with TTF in good yield. Photophysical properties of these compounds were investigated by UV-
Autor:
Shinichi Mikami, Kozo Toyota
Publikováno v:
HETEROCYCLES. 102:2063
Autor:
Taku Shoji, Masafumi Yasunami, Daichi Nagai, Kunihide Fujimori, Tetsuo Okujima, Miwa Tanaka, Shunji Ito, Kozo Toyota, Erika Shimomura, Akifumi Maruyama
Publikováno v:
ChemistrySelect. 1:49-57
Tris[(3-phenyl-1-azulenyl)tetracyanobutadiene]s and tris(aryltetracyanobutadiene)s connected to a 1,3,5-tri(1-azulenyl)benzene core (tris-AzTCBDs) have been prepared by the Pd-catalyzed alkynylation of tris(3-iodo-1-azulenyl)benzene derivative with t
Autor:
Homa Yamaguchi, Yota Kikuchi, Hirotaka Mutoh, Kozo Toyota, Kenta Takahashi, Shinichi Mikami, Hiroki Kishi, Koya Saito, Shuhei Yoshida, Kazuma Iwai, Hiroki Tanaka
Publikováno v:
HETEROCYCLES. 100:1763
Autor:
Chisa Yaku, Tetsuo Okujima, Taku Shoji, Kozo Toyota, Akifumi Maruyama, Natsumi Kamata, Shunji Ito
Publikováno v:
CHEMISTRY-A EUROPEAN JOURNAL. 21(1):402-409
Aryl-substituted 1,1,4,4-tetracyano-1,3-butadienes (FcTCBDs) and bis(1,1,4,4-tetracyanobutadiene)s (bisFcTCBDs), possessing a ferrocenyl group on each terminal, were prepared by the reaction of a variety of alkynes with tetracyanoethylene (TCNE) in a
Publikováno v:
Chemistry - A European Journal. 20:11903-11912
1,3-Bis(azulenylethynyl)azulene derivatives 9-14 have been prepared by palladium-catalyzed alkynylation of 1-ethynylazulene 8 with 1,3-diiodoazulene 1 or 1,3-diethynylazulene 2 with the corresponding haloazulenes 3-7 under Sonogashira-Hagihara condit
Autor:
Noboru Morita, Shunji Ito, Shun Kudo, Jun Kawakami, Ryuta Sekiguchi, Kozo Toyota, Takashi Matsuhashi, Shohei Yamazaki, Masayuki Takahashi
Publikováno v:
Tetrahedron. 70:2796-2803
Three new 1,2-dihydro-1-oxabenz[a]azulen-2-one derivatives, 1a (R1=H, R2=Me), 1b (R1=H, R2=Ph), and 1c (R1=COOEt, R2=Me), have been synthesized by the reaction of 2-hydroxyazulene (2a) and its 1-ethoxycarbonyl derivative 2b with ethyl acetoacetate (3
Autor:
Kozo Toyota, Tetsuo Okujima, Junya Higashi, Taku Shoji, Mitsuhisa Maruyama, Noboru Morita, Shunji Ito, Akifumi Maruyama
Publikováno v:
Bulletin of the Chemical Society of Japan. 87:141-154
6-Methoxy- and 6-dimethylaminoazulenes with methylthio groups at the 1- or 1,3-positions have been prepared by electrophilic substitution of the corresponding azulenes with DMSO in the presence of ...