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Recently I asked a questionquestion on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H4P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?

Recently I asked a question on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H4P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?

Recently I asked a question on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H4P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?

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Nilay Ghosh
Nilay Ghosh
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Recently I asked a question on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H2P2O7}$$\ce{H4P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?

Recently I asked a question on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H2P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?

Recently I asked a question on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H4P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?

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Nilay Ghosh
Nilay Ghosh
  • 26.8k
  • 27
  • 95
  • 206

What is the use of "pyro" in the naming of organic compound?

Recently I asked a question on the naming of polyhydroxy phenols. One of them was pyrogallol (1,2,3-Trihydroxybenzene) which is synthesized from gallic acid obtained from oak galls. (BEWARE- not a compound of gallium). enter image description here

But why "pyro"? Pyro is usen in naming inorganic acids like pyrosulfuric acid ($\ce{H2S2O7}$) or pyrophosphoric acid ($\ce{H2P2O7}$). It is also observed that the carboxylic acid derivative is gallic acid not pyrogallic acid and the hydroxy derivative is pyrogallol not gallol. Why is it so?