<scp>Monofluoromethyl‐Substituted</scp>
Sulfonium Ylides: Preparation,
<scp>Structure‐Reactivity</scp>
Study and Substrate Scope
<sup>†</sup>
作者:Xin Hong、Yafei Liu、Long Lu、Qilong Shen
DOI:10.1002/cjoc.202000206
日期:2020.11
Structure‐reactivity study of a family of electrophilic monofluoromethylating reagents based on sulfonium ylide skeleton with different steric hindrance and electron‐withdrawing properties was described. These studies led us to discover two highly reactive reagents 3 with a cyclic malonate backbone and 6 with an electron‐poor 1,1,1,5,5,5‐hexafluoropentane‐2,4‐dione backbone. The high reactivity of reagent
描述了基于on叶立德骨架的具有不同位阻和吸电子性质的亲电单氟甲基化试剂家族的结构反应性研究。这些研究使我们发现了两种具有高反应性的试剂3,它们具有环状丙二酸骨架,而6具有电子贫乏的1,1,1,5,5,5-六氟戊烷-2,4-二酮骨架。试剂6的高反应活性允许通过使用不同的碱以高收率高选择性地选择性地获得C-单氟甲基化或O-单氟甲基化的β-酮酸酯。另外,试剂3的反应 在室温下10分钟内,苯酚,羧酸,硫酚或杂芳基亲核试剂等多种亲核试剂发生了完全转化,并详细报道了这些反应的范围。