Study on the cycloaddition reactions of pyrrolotriazepine derivatives with nitrile oxides. Synthesis of new fused tricyclic ring systems
作者:Tamás Földesi、András Dancsó、Balázs Volk、Mátyás Milen
DOI:10.1016/j.tet.2017.02.016
日期:2017.3
Representatives of new tricyclic ring systems based upon the pyrrolotriazepine core, have been synthesized at our laboratory using cycloaddition reactions of 1-aryl-pyrrolotriazepinones or 1,4-diarylpyrrolotriazepines in a dichloromethane solution at room temperature, with nitrile oxides generated in situ from N-hydroxyarylcarboximidoyl chlorides with triethylamine. The reaction between 1-aryl-3H-pyrrolo[2
基于pyrrolotriazepine芯新三环环系的代表,已经在我们的实验室使用在室温下的在二氯甲烷溶液的1-芳基pyrrolotriazepinones或1,4- diarylpyrrolotriazepines环加成反应合成的,与所生成的氧化腈就地从ñ -羟基芳基羧酰亚胺基氯与三乙胺。1-芳基-3 H-吡咯并[2,1- d ] [1,2,5]三氮杂pin- 4(5 H)-one与相应的腈氧化物之间的反应生成3,11b-二芳基-5 H, 11b H- [1,2,4]恶二唑[4,5- b ]吡咯并[2,1- d ] [1,2,5]三氮杂-6(7 H)-一阶导数。1,4-二芳基-5 H-吡咯并[2,1- d ] [1,2,5]三氮杂pine在相似条件下的环加成反应得到两种产物,具体取决于环加成中涉及的双键:3,6, 11b-triaryl-7 H,11b H- [1,2,4]恶二唑并[ 4,5-