Studies in the heterocyclic series. XX. 1,4-Diazaphenoxazine and related compounds
作者:Charles O. Okafor
DOI:10.1002/jhet.5570180732
日期:1981.11
As part of our program on the synthesis of new psychotropic agents, the parent rings of two diazaphenox-azines are described. The reaction of 2-aminophenol and 2,3-dichloropyrazine in alkaline media gave good yields of 1,4-diazaphenoxazine. Replacement of 2,3-dichloropyrazine with 2,3-dichloroquinoxaline gave on the other hand the heterocycle, 1,4-diazabenzo[b]phenoxazine. Nitration and S-oxide formation
作为我们合成新精神药物的计划的一部分,描述了两种二氮杂苯并恶嗪的母环。2-氨基苯酚和2,3-二氯吡嗪在碱性介质中的反应产生了良好的1,4-二氮杂吩恶嗪产率。另一方面,用2,3-二氯喹喔啉代替2,3-二氯吡嗪得到杂环1,4-二氮苯并[ b ]吩恶嗪。通过与混合的硝酸和硫酸反应可实现硝化和S-氧化物的形成。还讨论了这些化合物的机理途径。