作者:Wim Van Rossom、Lingam Kishore、Koen Robeyns、Luc Van Meervelt、Wim Dehaen、Wouter Maes
DOI:10.1002/ejoc.201000460
日期:2010.7
Oxacalix[2]arene[2]quinazoline macrocycles were prepared in good yields, as mixtures of syn and anti isomers, through nucleophilic aromatic substitution cyclocondensation reactions of 2, 4-dichloroquinazolines and m-dihydroxybenzenes. The macrocyclization conditions were optimized and the isomeric ratio was investigated by means of one-step and frag-ment-coupling approaches. The oxacalixarene substitution
通过 2, 4-二氯喹唑啉和间二羟基苯的亲核芳香取代环缩合反应,以顺式和反式异构体的混合物形式以良好的收率制备了 Oxacalix[2] 芳烃 [2] 喹唑啉大环化合物。优化了大环化条件,并通过一步法和片段偶联法研究了异构体比例。通过改变二氯喹唑啉基双亲电和二羟基芳基双亲核结构单元,可以很容易地改变氧杂杯芳烃取代模式。通过 X 射线衍射研究探索了固态(1, 3-交替)构象行为和氧杂杯 [4] 芳烃腔尺寸。© 2010 Wiley-VCH Verlag GmbH & Co. KGaA,魏因海姆。