Výsledky vyhledávání - "Seiko Nan'ya"

Reactions ofo-bromoacetylacylphenones with several primary amines

Autor: Yasuo Butsugan, Kiyoshi Kanie, Noriyuki Ito, Hirofumi Ishida, Seiko Nan'ya

Publikováno v: Journal of Heterocyclic Chemistry. 32:1299-1302

o-Monobromoacetylacylphenones, 3a and 3b reacted with hydroxylamine or hydrazine hydrate to produce heterocycles, 2,3-benzoxazine or phthalazine derivatives. The reaction of bromoacetyl group of 3a and 3b with several thioamides afforded thiazole der

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ebc77c7ae2d1435ecc3892b3a75cfffe
https://doi.org/10.1002/jhet.5570320434

Zobrazit plný text záznamu

ChemInform Abstract: Double 1,3-Dipolar Cycloadditions of Meso-Ionic Heterocycles to N- Substituted Maleimides

Autor: Yasuo Butsugan, Yoshinori Kurachi, Seiko Nan'ya

Publikováno v: ChemInform. 23

Double 1,3-dipolar cycloadditions of 2,4-diphenyl-3-methyloxazotium 5-oxide and 3-phenylsydnone to two molecules of N-substituted maleimide afforded one or two isomeric 4,8-iminobenzo[1,2-c:4,5-c′]dipyrrole-1,3,5,7-tetrone derivatives owing to the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47007be8d681031cd5677b621be2743c
https://doi.org/10.1002/chin.199220054

Zobrazit plný text záznamu

ChemInform Abstract: Products Formed by the Reaction of o-Diacylbenzenes with Primary Amines

Autor: Seiko Nan'ya, Yasuo Butsugan, Takeo Kitahara

Publikováno v: ChemInform. 23

The reactions of o-diacylbenzenes with primary amines or ammonia produced several isoindole derivatives in the presence or the absence of acid. From o-diacylbenzenes and hydroxylamine hydrochloride in the presence of triethylamine 1H-2,3-benzoxazine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6535152b959c4962961fb38d51fb75f1
https://doi.org/10.1002/chin.199230178

Zobrazit plný text záznamu

ChemInform Abstract: Isoindole Derivatives from 2-Isonicotinoylacetophenone with Ammonia and Its Derivatives

Autor: Yasuo Butsugan, Seiko Nan'ya, T. Kuroda, Takeo Kitahara

Publikováno v: ChemInform. 24

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6084a70efae2bb3418d82239c2654c97
https://doi.org/10.1002/chin.199308186

Zobrazit plný text záznamu

ChemInform Abstract: Synthesis of Indeno(2,1-b)(1,4)benzothiazine Derivatives from 2- Bromoinden-1-ones

Autor: Ashok C. Bajji, Seiko Nan'ya, Yasuo Butsugan

Publikováno v: ChemInform. 24

2-Bromoinden-1-ones 2 were condensed with 6-substituted 3-aminopyridine-2(1H)-thiones to produce a new type of 4-azaindeno[2,1-b][1,4]benzothiazine derivatives 3. Substituted 6-phenylindeno[2,1-b][1,4]benzothiazines 4 were also prepared by reacting 2

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6cd403395b8412857aff738cda598f55
https://doi.org/10.1002/chin.199337251

Zobrazit plný text záznamu

ChemInform Abstract: Condensation Products of 2-Bromo-3-substituted-inden-1-ones with Several Primary Amines

Autor: Seiko Nan'ya, Takeo Kitahara, Yasuo Butsugan, Kenichi Fujii, Ashok C. Bajji

Publikováno v: ChemInform. 24

2-Bromo-3-substituted-inden-1-ones 2 reacted with L-cysteine or 2-aminobenzenethiol to produce 2,3-dihydro-5-phenylindeno[2,1-b][1,4]thiazine in moderate yield or 6-substituted-indeno[2,1-b][1,4]benzothiazines in good yield. The debrominated oxime an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f0a4a20bcf15835489085e615ea4a7b0
https://doi.org/10.1002/chin.199318187

Zobrazit plný text záznamu

ChemInform Abstract: Condensations of Brominated Products of o-Acetylbenzophenone with Several Primary Amines

Autor: Ashok C. Bajji, Ester J. Moiji, Seiko Nan'ya, Yasuo Butsugan, Hirofumi Ishida

Publikováno v: ChemInform. 26

2-Bromo-3-phenylinden-1-one (2) reacted with phenylthiourea to produce 2-phenylimino-8-phenylindeno[1,2-d]thiazole (heteropentalene) (4) in moderate yield and bis-substituted-indenyl sulfide (5) in low yield. Whereas, from the reaction of (2) with th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::757d308bb8b36db252bcb1ee8de8e032
https://doi.org/10.1002/chin.199512065

Zobrazit plný text záznamu

ChemInform Abstract: Formation of Isoindoline Derivatives from o-Bromoacetylbenzophenones

Autor: Yasuo Butsugan, Hirofumi Ishida, Seiko Nan'ya

Publikováno v: ChemInform. 26

o-Dibromoacetylbenzophenone, 2 or o-bromoacetylbenzophenone 3 reacted with aqueous ammonia to produce 3-phenylisoindolin-1-one 5. The reaction of 3 with methylamine afforded 3-hydroxy-2-methyl-3-phenyl-isoindolin-1-one 4 and 2-methyl-3-phenylisoindol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a4f2b1814f914e49c2f0aa8f533f3be8
https://doi.org/10.1002/chin.199522128

Zobrazit plný text záznamu