Sciencemadness Discussion Board

Is there anyway to prepare Picric acid from terephthalic acid?

chemaniac - 12-9-2004 at 23:12

Is there anyway to prepare Picric acid from terephthalic acid?
Please guide me in this method with all the details.

vulture - 13-9-2004 at 00:17

Big mistake.

You're asking to be spoonfed. :mad:
Put some thought in it yourself, don't be lazy. :mad:

Unless you show you've put some thought into this yourself this thread is gone.

Members, please do not spoonfeed this guy.

JohnWW - 13-9-2004 at 01:14

Understood, Vulture.

Terephthalic acid is para-benzenedicarboxylic acid, p-C6H4(COOH)2. Usually used for making fibrous polymers with, by polyesterification with 1,end-diols, like that with(CH2OH)2 which is called Mylar/Dacron/Terylene.

To convert it to picric acid would require decarboxylation, then conversion to phenol (I will not say how here, as Vulture insists), as intermediate steps. The whole process would be quite uneconomic compared to starting from benzene or phenol, anyway.

John W.

AngelEyes - 13-9-2004 at 03:11

This guy is asking the same question on E&W under the name quashimailk - wasn't that user banned here?

i m not asking to be spoonfed!

chemaniac - 16-9-2004 at 00:34

I have read that sodium benzoate can be decarboxylated to Phenol, by fusion with NaOH.
I need to know what if I first convert terephthalic acid into sodium salt and then carry out its decaboxylation. Apparently it seems to produce resorcinol,but unfortunately i have lack of appropriate apparatus and reagents, so its not possible for me to carry out all the experiments and to test the yield.
Please,don't think that i m a spoonfeeder.Its very difficult for a guy ho has no access to all the accesories of a chemical lab.
Looking forward for ur co-operation.