Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Yoshihiko Nozawa"'
Autor:
Atsushi Fukuta, Shin-ya Kuramoto, Ichiro Shimao, Ryuta Miyatake, Mayumi Izawa, Yoshihiko Nozawa, Mitsunori Oda, Shigeyasu Kuroda, Yoshihiro Mizukami
Publikováno v:
Tetrahedron Letters. 38:8291-8294
The titled quinone compound has been synthesized, and the X-ray crystallographic analysis of this compound revealed that it has anti-anti-configuration for stereochemical relationship between two methylene and sulfur bridges. Its 1 H and 13 C NMR spe
Autor:
Atsushi Fukuta, Yoshihiro Mizukami, Mitsunori Oda, Yoshihiko Nozawa, Ichiro Shimao, Shigeyasu Kuroda, Shin-ya Kuramoto, Mayumi Izawa, Ryuta Miyatake
Publikováno v:
ChemInform. 29
The titled quinone compound has been synthesized, and the X-ray crystallographic analysis of this compound revealed that it has anti-anti-configuration for stereochemical relationship between two methylene and sulfur bridges. Its 1 H and 13 C NMR spe
Autor:
Yoshiharu Yoneyama, Satoshi Fujita, Shigeyasu Kuroda, Kazuhiro Yanagihara, Yoshihiko Nozawa, Juro Ojima
Publikováno v:
Chemistry Letters. 16:1679-1682
Title annulenes have been synthesized through a double Wittig reaction between the vinylogous dicarbaldehydes of 1,6-diformylcycloheptatriene and bis[(triphenylphosphonio)methyl]sulfide dibromide, and their 1H NMR spectra were examined proving that t
Autor:
Hitoshi Tatemitsu, Emiko Ejiri, Yoshihiko Nozawa, Masayuki Masumoto, Satoshi Fujita, Tadahito Kato, Shigeyasu Kuroda, Jūro Ojima
Publikováno v:
Journal of the Chemical Society. Chemical communications. 1987(8):534-536
The title annulenes have been synthesized and their 1H n.m.r. spectra indicate that the [28]- and [34]-annulenes as well as the lower-membered ones can sustain a ring current.
Autor:
Yoshiharu Yoneyama, Juro Ojima, Yoshihiko Nozawa, Shigeyasu Kuroda, Kazuhiro Yanagihara, Satoshi Fujita
Publikováno v:
ChemInform. 19
Title annulenes have been synthesized through a double Wittig reaction between the vinylogous dicarbaldehydes of 1,6-diformylcycloheptatriene and bis[(triphenylphosphonio)methyl]sulfide dibromide, and their 1H NMR spectra were examined proving that t
Autor:
Satoshi Fujita, M. Masumoto, T. Kato, E. Ejiri, Shuji Hirooka, Hitoshi Tatemitsu, Yoshihiko Nozawa, Juro Ojima, Yoshiharu Yoneyama, Shigeyasu Kuroda
Publikováno v:
ChemInform. 19
Title annulenes (21)–(28) have been synthesized by a Wittig reaction of 1,6-bis-(4-formylbuta-1,3-dienyl)cyclohepta-1,3,5-triene (5) and the vinylogous dicarbaldehydes (6)–(10) with 3-methylpent2-en-4-ynyl(triphenyl)phosphonium bromide (11) or tr
Autor:
Hitoshi Tatemitsu, Shigeyasu Kuroda, Jūro Ojima, S. Fujita, Yoshihiko Nozawa, T. Kato, M. Masumoto, E. Ejiri
Publikováno v:
ChemInform. 18
Publikováno v:
ChemInform. 19
Publikováno v:
Bulletin of the Chemical Society of Japan. 60:3803-3804
The title aza[12]annulene has been synthesized by Beckmann rearrangement of the oxime from the methano[11]annulenone, followed by alkylation of the resulting lactam. Examination of the 1H NMR spectrum indicates that the aza[12]annulene is slightly pa
Autor:
Yoshiharu Yoneyama, Satoshi Fujita, Yoshihiko Nozawa, T. Kato, Juro Ojima, E. Ejiri, Shuji Hirooka, M. Masumoto, Shigeyasu Kuroda, Hitoshi Tatemitsu
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :385
Title annulenes (21)-(28) have been synthesized by a Wittig reaction of 1,6-bis-(4-formylbuta-1,3-dienyl)cyclohepta-1,3,5-triene (5) and the vinylogous dicarbaldehydes (6)-(10) with 3-methylpent-2-en-4-ynyl(triphenyl)phosphonium bromide (11) or triph