The second-order rate constants for the reactions of Umemoto's reagents I (X=H) and II (X=F) with carbanions follow the correlation lg k2=sN(N+E) and allow to calculate their electrophilic reactivity parameters E. The reactivities of Togni's hypervalent iodine-based CF3 transfer reagents do not follow this correlation.
梅本试剂 I (X=H) 和 II (X=F) 与碳负离子反应的二阶速率常数遵循相关性 lg k 2 = s N ( N + E ) 并允许计算它们的亲电反应性参数E。 Togni 的基于高价
碘的 CF 3转移试剂的反应性不遵循这种相关性。