Reactions with Hydrazonoyl Halides XXX: Synthesis of Some 2,3-Dihydro-1,3,4-Thiadiazoles and Unsymmetrical Azines Containing Benzothiazole Moiety
作者:Abdou O. Abdelhamid、Nora M. Rateb、Kamal M. Dawood
DOI:10.1080/10426500008082403
日期:2000.1.1
to give 2,3-dihydro-1,3,4-thiadiazoles in good yields. In contrast, hydrazonoyl bromides react with each of phenylthiourea (19a), phenylthiosemicarbazide (19b), and benzoylthiosemicarbazide (19c) afforded 5-arylazothiazole 22–24(a-c) derivatives, respectively. Structures of the new compounds were elucidated on the basis of elemental analyses, spectral data, and alternative methods of synthesis whenever
摘要 C-苯并噻唑酰-N-芳基腙酰溴化物 1a,b 与 2-噻唑基氰基亚甲基碳二硫代甲酯 (2)、碳二硫代烷基酯 8-10 和硫代氨基甲酸甲酯 14a-c 在三乙胺存在下反应,得到 2,3 -二氢-1,3,4-噻二唑,收率良好。相比之下,腙酰溴分别与苯基硫脲 (19a)、苯基氨基硫脲 (19b) 和苯甲酰氨基脲 (19c) 反应,分别得到 5-芳基偶氮噻唑 22-24(ac) 衍生物。新化合物的结构是在元素分析、光谱数据和其他可能的合成方法的基础上阐明的。