Nitrobenzoic acid

3-Nitrobenzoic acid

Nitrobenzoic acids are derivatives of benzoic acid. Two are commercially important. They are about ten times more acidic than the parent benzoic acid .^[1]

• 2-Nitrobenzoic acid is prepared by oxidation of 2-nitrotoluene.
• 3-Nitrobenzoic acid is a precursor to 3-aminobenzoic acid, which in turn is used to prepare some dyes. It is prepared by nitration of benzoic acid as well as benzaldehyde concomitant with oxidation.
• 4-Nitrobenzoic acid is a precursor to 4-aminobenzoic acid, a precursor to the anestheic Procaine. It is prepared by oxidation of 4-nitrotoluene.

References

1. ↑ Takao Maki, Kazuo Takeda "Benzoic Acid and Derivatives" in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a03_555.