Polymer chemistry

Catalysis

Surface modification

Physical chemistry

Sulfur dioxide

Sulfur

Organic chemistry

Chemistry

Chloride

Organic Chemistry Frontiers

A three-component reaction of naphthols, sulfur dioxide, and aryldiazonium tetrafluoroborates catalyzed by iron(<sc>iii</sc>) chloride through a radical process <italic>via</italic> direct C–H functionalization is developed, leading to diverse sulfonated naphthols in good yields.

Synthesis of sulfonated naphthols <i>via</i> C–H bond functionalization with the insertion of sulfur dioxide

Synthesis of sulfonated naphthols via C–H bond functionalization with the insertion of sulfur dioxide