Annulated 1,2,3-triazoles.<b>3</b>. Synthesis of 1,2,3-triazolo[4,5-<i>b</i>][1,5]benzoxazepin-10(9<i>H</i>)-ones and 10-(4-substituted-1-piperazinyl)-1,2,3-triazolo[4,5-<i>b</i>][1,5]benzoxazepines
作者:Flemming E. Nielsen、Erik B. Pedersen
DOI:10.1002/jhet.5570220645
日期:1985.11
10-(4-Substituted-1-piperazinyl)-1,2,3-triazolo[4,5-b][1,5]benzoxazepines 11 were prepared in a three-step synthesis starting from easily available 5-chloro-1,2,3-triazole-4-carbonyl chlorides 7 by titanium tetrachloride catalyzed condensation of N-(substituted)piperazines with 1,2,3-triazolo[4,5-b][1,5]benzoxazepin-10(9H)-ones 10 formed by ring closure of the intermediate amides 9. Although lactams
10-(4-取代的-1-哌嗪基)-1,2,3-三唑并[4,5-B] [1,5] benzoxazepines 11在三步合成方法制备从容易获得5-氯1开始N-(取代的)哌嗪与1,2,3-三唑并[4,5-b] [1,5]苯并]嗪-10(9H)的四氯化钛催化的1,2,3-三唑-4-羰基氯化物7 -酮10通过中间酰胺的环闭合形成9。尽管内酰胺10是作为在80℃下环化的唯一产物而获得的,但是除了在150℃下从9c形成10c外,还形成了意外的副产物13和14。11j中的4-甲氧基苄基通过TFA中的溶剂分解很容易去除。测试了化合物11d-f和11i的精神活性。