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[Chemical Knowledge]：What are the upstream raw materials for o-nitrophenol? What do the downstream products contain?

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Ortho-nitrophenol plays an important role in the field of raw materials for chemical production, and its upstream and downstream related products are extensive. The following are some of the main upstream and downstream associated products of o-nitrophenol:

upstream products:

1. Phenol: Phenol is the main raw material of o-nitrophenol, and o-nitrophenol can be generated by nitration reaction.

2. Nitric acid: Nitric acid is used in the nitration reaction and reacts with phenol to produce o-nitrophenol.

downstream products:

1. o-aminophenol: o-nitrophenol can be converted into o-aminophenol through reduction reaction, which is an important pharmaceutical intermediate and dye intermediate.

2. o-Nitrobenzaldehyde: o-Nitrophenol can be oxidized to form o-Nitrobenzaldehyde, which is an intermediate for the synthesis of fragrances, medicines and dyes.

3. o-Nitroacetophenone: The reaction of o-nitrophenol with ethyl acetoacetate can give o-nitroacetophenone, which is an intermediate used in the synthesis of drugs and pesticides.

4. 2-nitro-4-hydroxybenzoic acid: 2-nitro-4-hydroxybenzoic acid, a compound used in the synthesis of dyes and pharmaceutical intermediates, can be produced by oxidation of o-nitrophenol.

In short, as an important chemical raw material, o-nitrophenol has a wide range of upstream and downstream related products, involving medicine, dyes, spices, pesticides and other fields.

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