Electrophilic and Nucleophilic Substitutions of 2-Amino- and 2-Hydroxy-1,3-diazaazulenes
作者:Seiji Ebine、Kazuko Takahashi、Tetsuo Nozoe
DOI:10.1246/bcsj.61.2690
日期:1988.7
2-Amino- (2) and 2-hydroxy-1, 3-diazaazulenes (3) underwent smoothly electrophilic bromination under basic conditions to give 2-amino-4,6,8-tribromo- (4) and 6-bromo-2-hydroxy-1,3-diazaazulenes (7), respectively. Bromo derivatives 4 and 7 underwent some nucleophilic substitutions, e.g., 4 reacted with ease with sodium methoxide to give 2-amino-4,6,8-trimethoxy-1,3-diazaazulene (10).
2-氨基- (2) 和 2-羟基-1, 3-二氮杂芘烯 (3) 在碱性条件下顺利进行亲电溴化,得到 2-氨基-4,6,8-三溴- (4) 和 6-溴-2 -羟基-1,3-二氮杂茚 (7),分别。溴衍生物 4 和 7 经历了一些亲核取代,例如,4 容易与甲醇钠反应,得到 2-氨基-4,6,8-三甲氧基-1,3-二氮杂茚(10)。