Pcc/jones

[FutureDental88]

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So, the main difference between PCC and JONES reagent is just when it comes to primary alcohols, that PCC turns it to aldehyde, while Jones turn it to carboxylic acids?

But for secondary they are the same?


Have I gotten it correctly?

thx.

 

[Darknight260]

Yep. PCC will go as far as alcohols and aldehydes.
Jones, KMnO4, and alkali dichromate salts (Na2Cr2O7) will take secondary alcohols to ketones and primary alcohols to carboxylic acids.

 

[molar3]

Yep. PCC will go as far as alcohols and aldehydes.
Jones, KMnO4, and alkali dichromate salts (Na2Cr2O7) will take secondary alcohols to ketones and primary alcohols to carboxylic acids.

wat exactly is jones, written out?

 

[Darknight260]

From Wiki: Jones reagent is a solution of chromium trioxide in dilute sulfuric acid and acetone
Basically CrO3 is what you are looking for.

 

[molar3]

From Wiki: Jones reagent is a solution of chromium trioxide in dilute sulfuric acid and acetone
Basically CrO3 is what you are looking for.

ok thankyou!!

 

[adianadiadi]

Yes. Jones reagent is Cr6+ in aqueous medium whereas PDC or PCC are maintained in non aqueous media.

http://www.adichemistry.com/organic/organicreagents/jones/jones-reagent-reaction-1.html

http://www.adichemistry.com/organic/organicreagents/pdc/pyridinium-dichromate-1.html