作者:Hong-Seok Kim、Ii-Chun Kwon、Jun-Hyeak Choi
DOI:10.1002/jhet.5570360528
日期:1999.9
Crown ethers containing a thiazole subcyclic unit are prepared from the reactions of 1,3-bis[2(4-hydroxymethylthiazoyl)]benzene with di-p-tosylates of corresponding di, tri, tetra, pentaethylene glycols in the presence of potassium hydride. However, if the cavity size in the ring system is small, [2+2] cyclization adduct also is formed.
在氢化钾的存在下,由1,3-双[2(4-羟甲基噻唑基)]苯与相应的二,三,四,五乙二醇的二对甲苯磺酸酯反应制备含有噻唑亚环单元的冠醚。但是,如果环系统中的空腔尺寸较小,也会形成[2 + 2]环化加合物。