JEE Main Chemistry question
Which substance will not react with ( = Phenyl) to give dye? A ring with CH3 and OH (activated, p-cresol-type); a dichloro-substituted phenol; a nitro-substituted phenol; a trimethylphenol (both ortho/para positions blocked by methyl groups)
Answer: (D)
Solution
Azo coupling with a diazonium salt requires an open, activated ring position (usually para, or ortho if para is blocked) on the phenol for electrophilic attack; if all ortho and para positions relative to
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account