Reaction of 4-substituted thiosemicarbazides with (2,4,7-trinitro-9<i>H</i>-fluoren-9-ylidene)propanedinitrile
作者:Alaa A. Hassan、Yusria R. Ibrahim、Ahmed M. Shawky、Dietrich Döpp
DOI:10.1002/jhet.5570430406
日期:2006.7
4-Substituted thiosemicarbazides 4a-c reacted with (2,4,7-trinitro-9H-fluoren-9-ylidene)-propanedinitrile (2) in pyridine with admission of air to form spiro[fluorene-9,3′-(1,2,4-triazole)]derivatives 5a-c and (4-substituted thiosemicarbazono)propanedinitriles 6a-c in modest yields. 2,4,7-Trinitro-9-fluorenone (8) as well as one reduction product thereof and of 2, namely compounds 9 and 10, respectively
4-取代的硫代氨基脲4a-c在吡啶中与(2,4,7-三硝基-9 H-芴-9-亚烷基)-丙腈(2)反应,并引入空气以形成螺[芴-9,3'-( 1,2,4-三唑)]衍生物5a-c和(4-取代的硫代半氨基咔唑酮)丙二腈6a-c,产率适中。还发现了2,4,7-三硝基-9-芴酮(8)及其一种和2的还原产物,即分别为化合物9和10。提供了观察到的转换的原理。