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Thread: Azo dye in sodium hydroxide

  1. #1 Azo dye in sodium hydroxide 
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    I was wondering why ppl choose to put diazonium into sodium hydroxide for the coupling process to create azo dye?


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  3. #2  
    Forum Sophomore Matt Lacey's Avatar
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    Not entirely sure what you're asking here, but if it's why sodium hydroxide is used, then... the diazonium group is a fairly strong electrophile and will undergo an electrophilic substitution reaction (not entirely unlike Friedel-Crafts if you're familiar with that). Basically in the end the sodium hydroxide takes a proton from the benzene ring you've just coupled to restore the aromaticity of that ring.


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  4. #3  
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    Thankz a lot matt, that was wut i was looking 4. Why NaOH is used.
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