Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Eiichi Ibuki"'
Autor:
Jiro Higuchi, Kazuyoshi Hayashi, Mikio Yagi, and Kanekazu Seki, Kazuhiko Ishizu, Masahiro Kohno, Eiichi Ibuki, Kunihiko Tajima
Publikováno v:
The Journal of Physical Chemistry A. 105:6084-6091
Electron paramagnetic resonance (EPR) on the lowest excited triplet (T1) states of polyphenyl [diphenyl(polyphenylene)] molecules were studied in rigid organic glasses at 77 K. We observed the very interesting differences among their three groups of
Publikováno v:
Chemical and Pharmaceutical Bulletin. 29:370-378
Publikováno v:
Chemical and Pharmaceutical Bulletin. 30:2698-2704
Six sexiphenyls, including four new isomers, 2, 3'-di (4-biphenylyl) biphenyl (2), 4-(2-biphenylyl)-o-(4), 4-(2-biphenylyl)-m-quaterphenyl (5), and 2-phenyl-p-quinquephenyl (6), were synthesized by the Ullmann cross-coupling of iodobiphenyl and diiod
Publikováno v:
Chemical and Pharmaceutical Bulletin. 28:3210-3222
Publikováno v:
Chemical and Pharmaceutical Bulletin. 29:344-355
Eight new linear octiphenyls containing two or three kinds of linkage were synthesized by the Ullmann homo-coupling reaction of iodoquaterphenyl. Among them, five compounds were alternatively synthesized by the Kharash-type Grignard cross-coupling of
Publikováno v:
Chemical and Pharmaceutical Bulletin. 30:2369-2379
A series of twenty-seven polyphenyls, including quater-to sexiphenyls, was synthesized by the cross-coupling reaction of aryl Grignard reagents with arylene diiodides in the presence of bis (acetylacetonato) nickel (II). Twenty of them were obtained
Publikováno v:
Chemical and Pharmaceutical Bulletin. 29:2103-2106
New stable cis and trans rotational isomers of 1, 8-di (1-naphthyl) naphthalene were prepared by the Kharash-type Grignard cross-coupling of 1-naphthylmagnesium iodide and 1, 8-diiodonaphthalene in the presence of N, N'-bis (1-methyl-3-oxobutylidene)
Publikováno v:
Chemical and Pharmaceutical Bulletin. 30:802-809
A series of cross-coupling reactions of aryl Grignard reagents with aromatic iodides catalyzed by bis (acetylacetonato) nickel (II) was studied to establish reaction conditions under which the cross-coupling proceeded selectively and quantitatively.
Publikováno v:
Chemical and Pharmaceutical Bulletin. 28:1468-1476
Seven sexiphenyls, including three new isomers, 3, 4, 3', 4'-tetraphenylbiphenyl (Id), 2, 5, 2', 5'-tetraphenylbiphenyl (IIId), and 2, 2'-di (3-biphenylyl) biphenyl (Vd), were synthesized by Ullmann homo-coupling of iodoterphenyl. The characteristic
Publikováno v:
Bulletin of the Chemical Society of Japan. 48:1868-1874
Seven linear sexiphenyls were synthesized by the Ullmann reaction of iodobiphenyl and diiodobiphenyl. Infrared studies indicated that the fine structure in the 780–810 cm−1 region suggests the presence of consecutive m-phenylene units, and that t