Synthesis of thiazole-containing benzo-crown ethers
作者:Hong-Seok Kim、Young Kook Koh、Jun-Hyeak Choi
DOI:10.1002/jhet.5570350134
日期:1998.1
containing the thiazole subcyclic moity have been synthesized. Reaction of 1,2-bis(thioamidomethyloxy)benzene 2 with ethyl bromopyruvate in ethanol provided 1,2-bis(thiazolyl)benzene 4 (80%) along with thiazole 5 (14%). Reduction of 4 with lithium aluminum hydride followed by mesylationbromination gave 7. Similar treatment of 5 with lithium aluminum hydride followed by bromination resulted in 12. Benzo-crown