Efficient synthesis of novel azo compounds based on pyrimido[4,5-e][1,3,4]thiadiazine
作者:Mohsen Nikpour、Soroush Zarinabadi、Sattar Saberi
DOI:10.4314/bcse.v26i1.12
日期:——
Some new 5-bromo-2,4-dichloro-6-alkylpyrimidines were prepared by sequential treatment of 6-alkyl-pyrimidin-2,4(1 H ,3 H )-diones with bromine and phosphoryl chloride. Condensation of the dithizone with 5-bromo-2,4-dichloro-6-alkylpyrimidines in alkaline acetonitrile achieved 5-alkyl-7-chloro-3-phenylazo-1-phenyl- 1H -pyrimido[4,5- e ][1,3,4] thiadiazines. 7-chlorine atom of these compounds was replaced
通过用溴和磷酰氯顺序处理6-烷基-嘧啶-2,4(1 H,3 H)-二酮,制备了一些新的5-溴-2,4-二氯-6-烷基嘧啶。双硫zone与5-溴-2,4-二氯-6-烷基嘧啶在碱性乙腈中的缩合获得5-烷基-7-氯-3-苯基偶氮-1-苯基-1H-嘧啶[4,5-e] [1 ,3,4]噻二嗪。这些化合物的7-氯原子在沸腾的乙醇中被仲胺取代,得到其7-氨基衍生物。关键词:偶氮染料,5-溴-2,4-二氯-6-烷基嘧啶,双硫zone,环缩合,嘧啶基[4,5-e] [1,3,4]噻二嗪牛。化学 Soc。埃塞俄比亚。2012,26(1),115-120。DOI:http://dx.doi.org/10.4314/bcse.v26i1.12