1]heptanes 3a–d. On the other hand, 4-aryl-3-cyclohexenones 4c–d and p-substituted phenols 5c–d were obtained in the reactions of 1c–d with FeBr2 in CH2Cl2. A new fragmentation mechanism involving an electrophilic oxyl radical 1,5-substitution and a nucleophilic O-1,2-aryl shift is proposed based on the product analysis. In addition, the in vitro antimalarial activities of 1a–d were tested.
1,4-二芳基-2,3-二
氧杂
双环[2.2.2]辛烷的反应1A - d(1A Ar为:p -FC 6 ħ 4,1B:Ar为PH,1C:Ar为p -MeC 6 ħ 4,1D:Ar为p -MeOC 6 ħ 4)与FeBr 2的THF溶液,得到1,4- diarylbutan -1,4-二
酮2A - d和1,4-二芳基-7-
氧杂双环〔2.2.1〕
庚烷3a中- d。另一方面,4-芳基-3-
环己烯酮4c – d1c - d与FeBr 2在CH 2 Cl 2中的反应制得了对位
酚5c - d和对位
酚。在产物分析的
基础上,提出了一种新的涉及亲电子羟基1,5-取代和亲核O -1,2-芳基移位的断裂机理。此外,还测试了1a - d的体外抗疟活性。