Figure 6.

Multistep flow sequences involving an electrochemical step: (A) Synthesis of hypervalent iodine reagents via anodic oxidation in flow and subsequent synthetic applications. [i] CH₃CN as solvent; [ii] AcOH/CH₃CN (1:4) as solvent, 30 mol % BF₃·OEt₂; [iii] CH₃CN as solvent, 1.2 equiv of TsOH. (B) Synthesis of ortho-quinone via anodic oxidation in flow and subsequent Diels–Alder with 6,6-dimethylfulvene in batch. (C) Electrochemical synthesis of sulfonyl fluorides in flow and follow up sulfur(VI) fluoride exchange “click” reaction in flow with phenol to yield the corresponding phenyl sulfonate derivative.