Zobrazeno 1 - 10
of 367
pro vyhledávání: '"Tashiro, Masashi"'
Publikováno v:
In Tetrahedron 2009 65(12):2497-2505
Publikováno v:
九州大学機能物質科学研究所報告. 11(2):131-134
Trimethoxyl[2.2.3]metacyclophanes 5 and 8 were prepared and it was proved by ^1H-NMR spectra that the conformational change between 2,3-alternate and the cone conformers. The comparison between the dynamic NMR spectra of 8 and the computer-simulated
Publikováno v:
九州大学機能物質科学研究所報告. 11(2):121-124
The synthesis of deuteriated L-tyrosines with Raney alloys in alkaline deuterium oxide solutions, involving reductive debromination of brominated L-tyrosines and hydrogen-deuterium (H-D) exchange of L-tyrosines, without causing racemization, is prese
Autor:
Tsukinoki, Takehito, Kawaji, Takatoshi, Hashimoto, Iwao, Etoh, Tomohiro, Daniel Antonio Sahade, Tashiro, Masashi
Publikováno v:
九州大学大学院総合理工学報告. 19(1):15-18
Reductive coupling reaction of benzaldehydes, acetophenone, ethyl phenyl ketone and 1-tetralone using Al powder in 10% aq NaOH/MeOH/THF solution afforded the corresponding ethane-1,2-diols.
Autor:
Mataka, Shuntaro, Shidahara, Yasuhiro, Yonemitsu, Tadashi, Sawada, Tsuyoshi, Takahashi, Kazufumi, Tori-I, Akiyoshi, Tashiro, Masashi
Publikováno v:
九州大学機能物質科学研究所報告. 10(1):51-54
1,2-Diaminopyrene hydrochloride was prepared by the reduction of pyreno [1,2-c]-1,2,5-thiadiazole with tin powder in concentrated hydrochloric acid in 38% yield.
Autor:
Mataka, Shuntaro, Suzuki, Hiroshi, Sawada, Tsuyoshi, Tsukinoki, Takehito, Torii, Akiyoshi, Tashiro, Masashi
Publikováno v:
九州大学大学院総合理工学報告. 17(1):9-13
The reaction of 3a-aryl-5, 6a-diphenyl-3a, 6a-dihydro-2H-furo [3, 2-b] pyrrole-2, 6 (3H) -diones (1) with aqueous ammonia produced 2-aryl-4-benzoyl--2-methyl-5-phenyl-2H-imidazoles (2). The molecular structures of 2 were determined by means of an X-r
Autor:
Kakinami, Takaaki, Yamanaka, Kazuhiro, Yamanishi, Masae, Tsukinoki, Takehito, Mataka, Shuntaro, Tashiro, Masashi
Publikováno v:
九州大学大学院総合理工学報告. 16(3):307-310
Various haloanilines and benzylnitriles were treated in a 1.25N Na2CO3 solution with Raney Cu-Al or Ni-Al alloy. In the case of haloanilines, dehalogenated anilines were obtained in good yield. On the other hand, the reduction of benzylnitriles affor
Autor:
Mataka, Shuntaro, Kitagawa, Hirohisa, Tashiro, Masashi, Tsukinoki, Takehito, Kamata, Kichinosuke
Publikováno v:
九州大学大学院総合理工学報告. 16(3):311-314
Reaction of 4-benzoyl-3-methyl-2-phenyl-N-methylpyrrole with hydrazine dihydrochloride in the presence of either arylaldehyde or paraformaldehyde gave 7-aryl-2,4-diphenyl-1,3-dimethyl-IH-pyrrolo-[2, 3-d]pyridazines or the 7-unsubstituted derivative v
Autor:
Tsuzuki, Hirohisa, Maeda, Tetsuya, Yonemitsu, Tadashi, Mukumoto, Mamoru, Mataka, Shuntaro, Tashiro, Masashi
Publikováno v:
九州大学大学院総合理工学報告. 15(2):181-186
The reaction of 3,4-dibromo-2,5-bis (chloromethyl) thiophene (1a), sufficiently derived from 3,4-dibromothiophene, with several kinds of nucleophiles was investigated. Whereas cyanomethylation of la to 3,4-dibromo-2,5-bis (cyanomethyl) thiophene (1b)
Publikováno v:
九州大学大学院総合理工学報告. 14(3):323-327
In alcoholic solution, hydrazine derivatives attack 3a,5,6a-triphenyl-3,3a-dihydro-2H-furo-[3,2-b]pyrrole-2,6(6aH)-dione (1) first on the lactone-ring and then the keto group. At room temperature, the reaction of 1 with hydrazine hydrate gave the hyd