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Abstract:
The unique properties of fluorine-containing organic compounds make fluorine substitution attractive for the development of pharmaceuticals and various specialty materials, which have inspired the evolution of diverse C-F bond activation techniques. Although many advances have been made in functionalizations of activated C-F bonds utilizing transition metal complexes, there are fewer approaches available for nonactivated C-F bonds due to the difficulty in oxidative addition of transition metals to the inert C-F bonds. In this regard, using Lewis acid to abstract the fluoride and light/radical initiator to generate the radical intermediate have emerged as powerful tools for activating those inert C-F bonds. Meanwhile, these transition-metal-free processes are greener, economical, and for the pharmaceutical industry, without heavy metal residues. This review provides an overview of recent C-F bond activations and functionalizations under transition-metal-free conditions. The key mechanisms involved are demonstrated and discussed in detail. Finally, a brief discussion on the existing limitations of this field and our perspective are presented.
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SCIENCE CHINA-CHEMISTRY
ISSN: 1674-7291
CN: 11-5839/O6
Year: 2021
Issue: 10
Volume: 64
Page: 1630-1659
1 0 . 1 3 8
JCR@2021
1 0 . 4 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:117
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 86
SCOPUS Cited Count: 86
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: