An efficient two-step synthesis of novel thiazolo[2,3-<i>b</i>]pyrazolo[3,4-<i>f</i>][1,3,5]triazepines
作者:Braulio Insuasty、Alexis Tigreros、Henry Martínez、Jairo Quiroga、Rodrigo Abonia、Alexander Gutierrez、Manuel Nogueras、Justo Cobo
DOI:10.1002/jhet.145
日期:2009.7
straightforward synthesis of thiazolopyrazolodiazepines from the reaction of 4,5-diamino-3-methyl-1-phenylpyrazole with arylidene derivatives of rhodanine , the unplanned (Z)-2′-[(5-amino-3-methyl-1-phenylpyrazol-4-yl)imino]-5-arylidenethiazolidin-4-ones were obtained as unique products. Nevertheless, the treatment of these compounds with aliphatic aldehydes in dimethylformamide provided the novel thiazolo[2,3-b]pyrazolo[3
为了尝试通过以下反应直接合成噻唑并吡唑并二氮杂pine 4,5-二氨基-3-甲基-1-苯基吡唑 与若丹宁的亚芳基衍生物 中,计划外(Z)- 2' - [(5-氨基-3-甲基-1-苯基吡唑-4-基)亚氨基] -5- arylidenethiazolidin -4-酮获得了独特的产品。然而,用二甲基甲酰胺中的脂族醛处理这些化合物提供了新型的噻唑并[ 2,3- b ]吡唑并[3,4- f ] [1,3,5]三氮杂s 和 产量高到极好。根据IR,1D和2D NMR测量,质谱和微分析,对获得的化合物的所有结构进行分配。J.杂环化学,(2009)。