Cooperative Polar/Steric Strategy in Achieving Site-Selective Photocatalyzed C(sp<sup>3</sup>
)−H Functionalization
作者:Keiichi Yamada、Takahide Fukuyama、Saki Fujii、Davide Ravelli、Maurizio Fagnoni、Ilhyong Ryu
DOI:10.1002/chem.201701865
日期:2017.6.27
Synergistic control over the SH2 transition states of hydrogen abstraction exploiting polar and steric effects provides a promising cooperative strategy for site‐selective C(sp3)−H functionalization using decatungstate anion photocatalysis. By using this photocatalytic approach, the C−H bonds of substituted lactones and cyclic ketones were functionalized selectively. In the remarkable case of 2‐isoamyl
利用极性和空间效应对氢提取的S H 2过渡态进行协同控制,为利用去阳离子化阴离子光催化的位点选择性C(sp 3)-H功能化提供了一种有前途的合作策略。通过使用这种光催化方法,取代的内酯和环状酮的CH键被选择性地官能化。在带有5个甲基,5个亚甲基和3个次甲基CH键的2-异戊基4-叔丁基环己酮(1 t)的显着情况下,异戊基绳索中的1个次甲基CH键被选择性地官能化。