The reaction involves an intramolecular cyclization of a diazonium compound. The diazonium group attacks the adjacent aromatic ring in an electrophilic aromatic substitution, forming a fused ring system. The hydroxyl group directs the cyclization to the ortho position, resulting in the formation of a naphthol derivative with the azo linkage incorporated into the ring system. The product is a hydroxylated benzocinnoline structure.
JEE Advanced · 2017 · 21 May 2017 · Paper 2 · Single correct option