Preparation of a Highly Alkyl-substituted Bis(8-hydroxyquinoline) Derivative and Its Use for the Self-Assembly of a Lipophilic Helicate with an Internal Binding Site for Cationic Guests
作者:Markus Albrecht、Oliver Blau、Jeanette Zauner
DOI:10.1002/(sici)1099-0690(199911)1999:11<3165::aid-ejoc3165>3.0.co;2-q
日期:1999.11
ethylene-linked bis(8-hydroxyquinoline) derivative 9-H2 is synthesized in an eight step procedure starting from 3-n-decyl-8-methoxyquinoline (1). NBS-bromination followed by a Suzuki-reaction enables the introduction of a decyl chain in the 5-position. In the key step of the sequence a mild (Ph3P)2NiBr2-catalyzed homo-coupling reaction of the benzyl bromide 7 is performed. In the presence of cationic templates
从3-正癸基-8-甲氧基喹啉(1)开始,以八步程序合成了四癸基取代的乙烯连接的双(8-羟基喹啉)衍生物9-H 2。NBS溴化之后再进行Suzuki反应,可以在5位上引入癸基链。在该序列的关键步骤中,进行了温和的(Ph 3 P)2 NiBr 2催化的苄基溴7的均偶联反应。在存在阳离子模板(M + = Na +,K +,NH 4 +)的情况下,化合物9-H 2在模板指导的自组装过程中与镓(III)离子反应形成双核络合物[M⊂(9)3 Ga 2 }] Cl。首次获得了在非极性溶剂中显示出良好溶解性的螺旋型隐窝。