New diazadi(and tri)thia-21-crown-7 ethers containing 8-hydroxyquinoline side arms
作者:Hua-Can Song、Yi-Wen Chen、Ji-Guo Song、Paul B. Savage、Guo-Ping Xue、Joseph A. Chiara、Reed M. Izatt、Jerald S. Bradshaw、Krzysztof E. Krakowiak
DOI:10.1002/jhet.5570380619
日期:2001.11
A series of macrocyclic diazadi(and tri)thiacrown ethers containing two 5-substituent-8-hydroxyquinoline side arms have been synthesized from the corresponding macrocyclic diazadi(and tri)thiacrown ethers. The crown ethers were obtained by reduction of the proper macrocyclic di(and tri)thiadiamides by borane-tetrahydrofuran or by sodium borohydride-boron trifluoride ethyl etherate-tetrahydrofuran.
从相应的大环二氮杂(和三)噻咯酮醚合成了一系列含有两个5-取代基-8-羟基喹啉侧臂的大环二氮杂(和三)噻咯烷醚。通过用硼烷-四氢呋喃或硼氢化钠-三氟化硼乙基醚-四氢呋喃钠还原适当的大环二(和三)噻二酰胺,获得冠醚。硼氢化钠-三氟化硼乙醚乙酯-四氢呋喃用于还原二酰胺的产率高于硼烷-四氢呋喃。以下四种方法用于制备带有两个8-羟基喹啉侧臂的大环:(1)与8-羟基喹啉的曼尼希反应;(2)以三乙酰氧基硼氢化钠为还原剂,用8-羟基喹啉-2-甲醛进行还原反应。(3)的环化N,N′-双(8-羟基喹啉-2-基甲基)-1,2-双(2-氨基乙氧基)乙烷(38)与双(α-氯酰胺)5;(4)分步工艺,其中大环三噻二酰胺11被氢化铝锂-四氢呋喃还原为环状单酰胺36,其与5-氯-8-羟基喹啉平稳地反应以产生单取代的大环单酰胺39。