Construction of fluorinated pyrazole derivatives via a one-pot tandem C–H insertion/electrophilic fluorination reaction

A series of 4-fluoro-pyrazole derivatives were synthesized in moderate to good yields via a one-pot tandem procedure involving an Rh2(OAc)4-catalyzed C–H insertion and an electrophilic fluorination with N-fluorobenzenesulfonimide (NFSI).

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