Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Ikuo Iida"'
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :3039-3046
The photochemical reactions of N-acylbenzoxazole-2-thiones 1 are examined. Irradiation of N-acylbenzoxazole-2-thiones 1 in the presence of a variety of alkenes 2 yields 2-substituted benzoxazoles 3–20 and/or the unexpected products, iminothietanes
Autor:
Takehiko Nishio, Masaki Takahashi, Tsutomu Fujita, Masami Sakamoto, Ikuo Iida, Shoji Watanabe, Hiromu Aoyama
Publikováno v:
Scopus-Elsevier
Photochemical reactions of various N-(α,β-unsaturated carbonyl)benzoylformamides both in solution and in a solid state were investigated. Under homogeneous conditions, all acyclic imides underwent photochemical 2 + 2 cycloaddition that resulted in
Publikováno v:
Neues Jahrbuch für Mineralogie - Abhandlungen. 171:199-213
Autor:
Takao Nakano, Masanori Sakamoto, Ikuo Iida, Keitaro Ishii, Tatsuya Zenko, Takehiko Nishio, Masashi Kotera
Publikováno v:
Liebigs Annalen. 1995:19-27
Photocyclization reactions of δ-hydroxybutyl α,β-unsaturated γ,δ-epoxy nitriles 4a, b at 254 nm lead to spiro ketals 5a, b and 6a, b arising from the carbonyl ylide intermediate A. The spiro ketal 6b containing an endocyclic double bond is trans
Publikováno v:
Helvetica Chimica Acta. 77:981-987
The photocycloaddition of benzothiazole-2-thiones to electron-rich and aryl-substituted alkenes are described. Irradiation of N-unsubstituted benzothiazole-2-thione (1) in the presence of alkenes 3 gave 2-(2′-mercaptoalkyl)benzothiazoles 4, and 2-s
Publikováno v:
Chemistry Letters. 23:77-80
Tetraethylethanediselenoamide (2) was prepared in 81% yield by reaction of tetraethylethynediamine with elemental selenium. The X-ray single crystal structure analysis revealed that two Et2N(C=Se)– units of 2 are perpendicular to each other. The ox
Publikováno v:
ChemInform. 23
The first stable pentacoordinated sulfur compound with four carbon–sulfur bonds, bis(2,2′-biphenylylene)sulfurane 1, is prepared and its molecular structure is determined by X-ray crystallographic analysis.
Publikováno v:
ChemInform. 22
Publikováno v:
ChemInform. 23
Publikováno v:
ChemInform. 23
A chiral hydantoin derivative, 5-methylene-1,3-bis[(S)-1-phenylethyl]-2,4-imidazolidinedione, was synthesized and the scope of this compound in Diels–Alder reaction was investigated.