[reaction: see text]. The beta-fragmentation of 2,2-difluoro-saccharide anomeric alkoxyl radicals, generated under oxidative condition by treatment of the respective alcohols with (diacetoxyiodo)benzene (DIB) and iodine, afforded 1,1-difluoro-1-iodo alditols in high yield. The reactivity of the fluorinated radical generated by rupture of the C-I bond has been preliminarily assessed by reductive deiodination
[反应:请参见文字]。通过用(
二乙酰氧基
碘)苯(DIB)和
碘处理相应的醇在氧化条件下产生的2,2-二
氟糖异头烷氧基自由基进行β片段化反应,可得到高浓度的1,1-二
氟-1-
碘醛糖醇屈服。通过用氢化三
丁基锡/ AIBN进行还原性
碘化和使用Keck反应进行分子间烯丙基化,初步评估了CI键断裂所产生的
氟化自由基的反应性。