Synthesis of Tetraaza Derivatives of Benzoxazinophenothiazine
作者: Benjamin E. EzemaChidimma G. EzemaJude I. AyoguDavid I. UgwuEfeturi A. Onoabedje
刊名: Oriental Journal of Chemistry, 2015, Vol.31 (1)
来源数据库: Material Science Research India
DOI: 10.13005/ojc/310114
关键词: 2-Amino-5-bromopyrazin-3-thiol45-diamino-6-hydroxypyimidine46-diaminopyrimidine-5-thiol23-dichloro-14-naphthoquinoneLeuco BaseVat dyealkaline hydrolysiscondensation reaction
原始语种摘要: 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 carbonate. Whereas the parent tetraaza derivatives: 15-amino-8-bromo-6,9,12,14-tetraazabenzo[a][1,4]benzoxazino[3,2-c] phenothiazine, 9,15-diamino-6,8,12,14-tetraazabenzo[a][1,4]benzoxazino[3,2-c]pheno- thiazine and 15-amino-6,8,12,14-tetraazabenzo[a][1,4]benzoxazino[3,2-c]phenothiazine were synthesized by base catalyzed condensation reactions of 11-amino-6-chlorobenzo[a]-8,10-diazaphenoxazin-5-one with 2-amino-5-bromopyrazin-3-thiol, 4,6-diaminopyrimidine-5-thiol and 4-diaminopyrimidine-5-thiol respectively. The...
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关键词翻译
关键词翻译
  • amino 氨基
  • thiol 硫羟
  • heterocyclic 杂环的
  • anhydrous 无水的
  • phenothiazine 吩噻嗪
  • bromo 溴代
  • dichloro 二氯
  • naphthoquinone 萘醌
  • condensation 冷凝
  • catalyzed 催化的