Synthesis of 4-(cyclic dialkylamino)-7-azaindoles by microwave heating of 4-halo-7-azaindoles and cyclic secondary amines
作者:John J. Caldwell、Kwai-Ming Cheung、Ian Collins
DOI:10.1016/j.tetlet.2007.01.003
日期:2007.2
Nucleophilic aromatic substitution of 4-chloro- and 4-fluoro-7-azaindoles with cyclic secondary amines under microwave heating gave a straightforward and rapid synthesis of 4-(cyclic dialkylamino)-7-azaindoles. 4-Fluoro-7-azaindoles showed a greater reactivity towards SNAr reactions under these conditions than 4-chloro-7-azaindole.
在微波加热下用环状仲胺对4-氯-和4-氟-7-氮杂吲哚进行亲核芳香族取代,可以直接,快速地合成4-(环状二烷基氨基)-7-氮杂吲哚。在这些条件下,4-氟-7-氮杂吲哚显示出比4-氯-7-氮杂吲哚对S N Ar反应更高的反应性。