Comments on: Reagent Friday: Chromic Acid, H2CrO4 https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/ Fri, 02 Dec 2022 03:12:07 +0000 hourly 1 https://wordpress.org/?v=6.6.2 By: James Ashenhurst https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-643575 Fri, 02 Dec 2022 03:12:07 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-643575 In reply to Sam.

It would give carbonic acid, the hydrated form of carbon dioxide.

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-602970 Tue, 29 Jun 2021 20:23:11 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-602970 In reply to Dun.

No, it should not, at least as far as oxidation is concerned. Prolonged heating of a tertiary alcohol with acid will lead to dehydration (elimination) but tertiary alcohols cannot be oxidized further.

]]> By: Dun https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-602892 Sun, 27 Jun 2021 17:18:03 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-602892 Will H2CrO4 affect 3° alcohol? Plz explain.

]]> By: Sam https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-602149 Thu, 10 Jun 2021 17:36:03 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-602149 What happens when we take methanol except 1° or 2° alcohol.
I am trying to find out reaction related to oxidation of methanol but failed to find even a single one with any oxidising agent

]]> By: Degrees of Oxidation Using Methane as an Example - Quirky Science https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-581318 Thu, 18 Jun 2020 16:40:18 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-581318 […] Master Organic Chemistry. Reagent Friday: Chromic Acid, H₂CrO₄ (2016) […]

]]> By: Bibhu https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-580071 Sun, 10 May 2020 13:11:07 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-580071 Yeah, pretty sure! In fact, I have the very question paper that contains the original question…
I guess, it was an error then.
Yeah, I get it.
Thanks for helping me out!

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-580059 Sun, 10 May 2020 01:44:17 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-580059 In reply to Bibhu.

Are you sure it’s Jones and not PCC?

Jones is in an aqueous environment – any aldehyde will form a hemiacetal (via addition of water) and the hemiacetal can be further oxidized to the carboxylic acid…

]]> By: Bibhu https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-580032 Sat, 09 May 2020 10:28:26 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-580032 Hey, my teacher says that Jones Reagent oxidizes aromatic primary alcohols to aldehydes and not carboxylic acids. Is that so? If it is, under what conditions (and with what substrates) do we get aldehyde/carboxylic acid?

]]> By: James Ashenhurst https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-555444 Sun, 19 May 2019 06:42:45 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-555444 In reply to Sherlock.

No. Under very forcing conditions CrO3 can sometimes oxidize alkyl groups next to aromatic rings ( “benzylic oxidation” ) but it does not interact with alkenes/alkynes.

]]> By: Sherlock https://www.masterorganicchemistry.com/2011/06/03/reagent-friday-chromic-acid-h2cro4/#comment-555427 Sat, 18 May 2019 16:28:26 +0000 https://www.masterorganicchemistry.com/?p=1578#comment-555427 Apart from oxidising alcohols, can the Jones Reagent oxidise an alkene or alkyne as well?

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