New Approaches to the Synthesis of 4-(2-Aminophenyl)-1,3-dihydro-2H-imidazol-2-ones and 3-Ureidoindoles and a Study of Their Interconversion
作者:Antonín Klásek、Antonín Lyčka、Michal Holčapek、Ignác Hoza
DOI:10.1002/hlca.200890040
日期:2008.2
3H-quinoline-2,4-diones (2) and 3a-alkyl/aryl-9b-hydroxy-3,3a,5,9b-tetrahydro-1H-imidazo[4,5-c]quinoline-2,4-diones (3) react in boiling concentrated HCl to give 5-alkyl/aryl-4-(2-aminophenyl)-1,3-dihydro-2H-imidazol-2-ones (6). The same compounds were prepared by the same procedure from 2-alkyl/aryl-3-ureido-1H-indoles (4), which were obtained from the reaction of 3-alkyl/aryl-3-aminoquinoline-2,4(1H
3-烷基/芳基-3-脲基-1- ħ,3 ħ -喹啉-2,4-二酮(2)和3a-烷基/芳基-9B羟基甲基-3,3a,5,9b-四氢1 ħ -咪唑并[4,5 - c ]喹啉-2,4-二酮(3)在沸腾的浓盐酸中反应,得到5-烷基/芳基-4-(2-氨基苯基)-1,3-二氢-2 H-咪唑- 2个(6)。由2-烷基/芳基-3-脲基-1 H-吲哚(4)通过相同的步骤制备相同的化合物,它们是由3-烷基/芳基-3-氨基喹啉-2,4(1)的反应获得的。H,3 H)-二酮(1)与1,3-二苯基脲或通过3a-烷基/芳基-9b-羟基-3,3a,5,9b-四氢-1 H-咪唑并[4,5 - c ]喹啉-2,4-二酮的转化(3)和在沸腾的AcOH中的5-烷基/芳基-4-(2-氨基苯基)-1,3-二氢-2 H-咪唑-2-酮(6)。通过用三光气处理将后者转化成1,3-双[2-(2-氧代-2,3-二氢-1 H-咪唑-4-基)苯基]脲(5)。所有化合物均通过1