Write a reaction for the preparation of 2,4-dinitro-1-naphthol.(From alpha-naphthol(1))
Answer:
The -OH of the naphthol is ortho/para directing, so the first NO2 will go on either the 2 or 4 position. The mononitrated naphthol has a meta directing NO2 and an ortho/para directing OH. In either case (2 or 4 NO2-substituted naphthol) the influences combine to produce your desired product.
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