作者:Agata Siwek、Monika Wujec、Maria Dobosz、Irena Wawrzycka-Gorczyca
DOI:10.1002/hc.20643
日期:——
, a study on the influence of azole moiety on the capability for intramolecular cyclization and its direction was carried out. It was found that for 4-aryl/alkyl-thiosemicabazides with triazole, imidazole, or pyrrole moiety at N-1 nitrogen atom possible products were only s-triazoles, both in alkaline and acidic medium. Successful dehydrocyclization of 1-azolil-4-aryl/alkyl-thiosemicarbazides leading
对四个系列的1-唑啉-4-芳基/烷基-氨基硫脲进行了唑基对分子内环化能力的影响及其方向的研究。发现对于在 N-1 个氮原子上具有三唑、咪唑或吡咯部分的 4-芳基/烷基-氨基硫脲,在碱性和酸性介质中,可能的产物仅为 s-三唑。仅针对一系列 1-(4-甲基-1,2,3-噻二唑-5-基-羰基)-4- 1-唑基-4-芳基/烷基-氨基硫脲成功脱氢环化生成噻二唑芳基/烷基氨基硫脲。可以推测,1-唑啉-4-芳基/烷基-氨基硫脲的氧原子pKa值的测定可能是预测脱氢环化形成噻二唑的可能性的非常有价值的参数。© 2010 威利期刊公司。杂原子化学 21:521–532, 2010; 在 wileyonlinelibrary.com 上在线查看这篇文章。DOI 10.1002/hc.20643