A Qualitative Comparison of the Reactivities of 3,4,4,5-Tetrachloro-4H-1,2,6-thiadiazine and 4,5-Dichloro-1,2,3-dithiazolium Chloride
作者:Andreas Kalogirou、Panayiotis Koutentis
DOI:10.3390/molecules200814576
日期:——
The high yielding transformations of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine into 3,5-dichloro-4H-1,2,6-thiadiazin-4-one (up to 85%) and 2-(3,5-dichloro-4H-1,2,6-thiadiazin-4-ylidene)malononitrile (up to 83%) have been investigated and compared to the analogous transformations of the closely-related 4,5-dichloro-1,2,3-dithiazolium chloride (Appel’s salt) into 4-chloro-5H-1,2,3-dithiazol-5-one and 2-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)malononitrile. Furthermore, cyclocondensation of 3,4,4,5-tetrachloro-4H-1,2,6-thiadiazine with 2-aminophenol and 1,2-benzenediamines gave fused 4H-1,2,6-thiadiazines in 68%–85% yields.
研究了 3,4,4,5-四氯-4H-1,2,6-噻二嗪向 3,5-二氯-4H-1,2,6-噻二嗪-4-酮(高达 85%)和 2-(3,5-二氯-4H-1,2,6-噻二嗪-4-亚基)丙二腈(高达 83%)的高产率转化、噻二嗪-4-酮(高达 85%)和 2-(3,5-二氯-4H-1,2,6-噻二嗪-4-亚基)丙二腈(高达 83%)的类似转化进行了研究,并与密切相关的 4,5-二氯-1,2,3-二噻唑氯化物(阿贝尔盐)转化为 4-氯-5H-1,2,3-二噻唑-5-酮和 2-(4-氯-5H-1,2,3-二噻唑-5-亚基)丙二腈的类似转化进行了比较。此外,3,4,4,5-四氯-4H-1,2,6-噻二嗪与 2-氨基苯酚和 1,2-苯二胺进行环缩合,可得到产率为 68%-85% 的融合 4H-1,2,6-噻二嗪。