全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Jude I. Ayogu , Benjamin E. Ezema , Chidimma G. Ezema
来源:[J].Asian Journal of Chemistry(IF 0.253), 2015, Vol.27 (12)亚洲化学杂志
摘要:Palladium-catalyzed Suzuki-Miyaura cross-coupling reactions of 6-chloro-5H-benzo[a]phenothiazin-5-one (1), 11-amino-6-chloro-9-thio-5H-naphtho[2,1-b]pyrimido[5,4-e][1,4]oxazin-5-one (2) and 6-chloro-5H-naphtho[2,1-b]pyrido[2,3-e][1,4]oxazin-5-one (3) with phenylboronic acid ...
作者:Jude I. Ayogu , David I. Ugwu
来源:[J].Oriental Journal of Chemistry, 2015, Vol.31 (1)材料科学研究所
摘要:Tetraaza benzoxazinophenothiazine heterocyclic rings were synthesized and characterized. The key intermediate, 11-amino-6-chlorobenzo[a]-8,10-diazaphenoxazin-5-one was prepared by reaction of 4,5-diamino-6-hydroxypyimidine with 2,3-dichloro-1,4-naphthoquinone in anhydrous sodium ...
作者:Jude I. Ayogu , David I. Ugwu
来源:[J].Oriental Journal of Chemistry, 2015, Vol.31 (1)材料科学研究所
摘要:Isomeric derivatives of angular aza benzophenothiazine and complex aza benzothiazinophenothiazine rings were successfully synthesized. Reactions of 2-amino-3,5-dibromopyrazine with 6,7-dibromoquinoline-5,8-dione in anhydrous sodium carbonate gave isomeric angular aza benzophenoth...
作者:Jude I. Ayogu , David I. Ugwu ...
来源:[J].Oriental Journal of Chemistry, 2014, Vol.30 (4)材料科学研究所
摘要:The synthesis of benzothiazinophenothiazine derivatives from simple heterocyclic compounds was thoroughly investigated. The intermediate, 6-chloro-5H-benzo[a]phenothiazin-5-one was afforded by the condensation of 2-aminothiophenol with 2,3-dichloro-1, 4-naphthoquinone in an alkal...

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