Question
Diazo coupling is useful to prepare some:
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Answer
- Dyes
The first use of diazonium salts was to produce water-fast dyed fabrics by immersing the fabric in an aqueous solution of the diazonium compound, followed by immersion in a solution of the coupler (the electron - rich ring that undergoes electrophilic substitution).
The major applications of diazonium compounds remains in the dye and pigment industry.
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