An Unusual Trifluoromethyl Elimination Reaction from the 4,4-Bis(trifluoromethyl)-5-hydroxyimidazoline Ring System
作者:Hui-Yin Li、Indawati DeLucca、Spencer Drummond、George A. Boswell
DOI:10.1021/jo961723x
日期:1997.4.1
observed when 4,4-bis(trifluoromethyl)-5-hydroxyimidazoline 5 was treated with a variety of bases to afford the biologically interesting 4-(trifluoromethyl)imidazole analogs (9 and 10). A unique mechanism was proposed for this transformation, supported by isolating and trapping the hypothesized intermediates. Heating of 5 with Et(4)NCN in DMSO provided 19, which was clearly derived from the proposed
当将4,4-双(三氟甲基)-5-羟基咪唑啉5用多种碱处理以提供生物学上令人感兴趣的4-(三氟甲基)咪唑类似物(9和10)时,观察到容易的三氟甲基化。提出了这种转化的独特机制,并通过分离和捕获假设的中间体加以支持。用DMSO中的Et(4)NCN加热5,得到19,显然是由所提议的中间体17衍生的。最后,咪唑9转化为N- [2-苯基-4-(三氟甲基)-1H-咪唑-5 -基] -N-甲基苯甲酰胺类似物,它们是潜在的酰基CoA:胆固醇酰基转移酶(ACAT)抑制剂。