Synthesis of a new class of azathia crown macrocycles containing two 1,2,4-triazole or two 1,3,4-thiadiazole rings as subunits
作者:Naser Foroughifar、Akbar Mobinikhaledi、Sattar Ebrahimi、Hassan Moghanian、Mohammad Ali Bodaghi Fard、Mehdi Kalhor
DOI:10.1016/j.tetlet.2008.12.014
日期:2009.2
2-amino-5-mercapto-1,3,4-thiadiazole with bis-aldehydes 1a–c. Further reaction of compounds 3a–d and 6a–c with dibromoalkanes afforded the new macrocycles 5a–f and 8a–d. The cyclization does not require high dilution techniques and provides the expected azathia macrocycles in good yields, ranging from 55% to 68%.
一系列新的1,2 / 1,3-双[ o-(N-亚甲基氨基-5-芳基-3-硫醇-4 H -1,2,4-三唑-4-基)苯氧基]烷衍生物3a – d和双[ o-(N-亚甲基氨基-2-硫醇-1,3,4-噻二唑-5-基)苯氧基]烷烃6a – c是通过4-氨基-5-(芳酰基)-4 H缩合制备的-1,2,4-三唑-3-硫醇2a – b或2-氨基-5-巯基-1,3,4-噻二唑与双醛1a – c。化合物3a – d和6a – c的进一步反应与二溴代烷烃一起提供了新的大环化合物5a - f和8a - d。环化不需要高稀释度技术,并且可以以55%至68%的高收率提供预期的氮杂硫磷大环化合物。