Research on nitrogen containing heterocyclic compounds.<b>XIX</b>: Synthesis of 8<i>H</i>-imidazo[2,1-<i>c</i>]-<i>s</i>-triazolo[4,3-<i>a</i>]-[1,4]benzodiazepine and its 1-derivatives
作者:Giorgio Stefancich、Romano Silvestri、Marino Artico
DOI:10.1002/jhet.5570300243
日期:1993.3
transformed into the corresponding ethoxycarbonyl derivative 9. Catalytic reduction of the nitro group to the amino group yielded 10, which was then cyclized to 10,11-dihydro-11-oxo-5H-imidazo[2,1-c][1,4]benzodiazepine 11. Treatment of this lactam with di-4-morpholinylphosphinic chloride followed by reaction of the intermediate 12 with formylhydrazine gave the title compound or its 1-derivatives when acetylhydrazine
在叔丁醇钾和18-crown-6存在下,2-硝基苄基碘与1 H-咪唑反应,得到1-(2-硝基苄基)-1 H-咪唑。该化合物的三氯乙酰化提供了三氯乙酰基咪唑8,将其在用乙醇钠处理后转化为相应的乙氧羰基衍生物9。将硝基催化还原为氨基,得到10,然后将其环化为10,11-dihydro-11-oxo-5 H-咪唑并[2,1- c ] [1,4]苯并二氮杂11. 11。内酰胺与二-4-吗啉基次膦酰氯,然后使中间体反应当使用乙酰肼或异烟酰基酰肼代替甲酰肼时,用甲酰肼的12得到标题化合物或其1-衍生物。