Synthesis of benzoic acid (Oxidation of toluene)

In this video the synthesis of benzoic acid is shown. Usually a phase-transfer catalyst is used, but as it can be seen, it still works without one.

[mahendraparmar]

Best video ever on a synthesis 👏👏🤗 I wish you reach 10m subscribers 🤗🤗

[trantruc]

This video is so interesting and useful because tomorrow i am having a chemistry practical lesson. Thanks.

[TheHuntermj]

Could you maybe do a reaction like this again with and without a phase transfer catalyst to see the effect of it on the reaction and yield? Also will cleaning grade quaternary ammonium compounds work?

[Drumsticks]

Wonderful video! We're gonna do the ecact same reaction in the lab tomorrow, but with the transfer catalyst :)

[mlahtisrafilova]

Your videos were great. Please put turkish subtitles❤️

[qwertyqwerty-cxqn]

in the course of this reaction, alkali KOH is formed, therefore, such oxidation is aggressive, if magnesium nitrate is added to the in the reaction mass equimolarly for potassium in the KMnO4 compound, then the alkali in the reaction mass will bind to magnesium 2+ and precipitate Mg(OH)2, and the reaction will go more gently and not to the end, that is, differently.
so phenyl ethane is oxidized to acetophenone in about 2 hours at 70 degrees Celsius with high yields of ~ 87%, so is phenylpropane to propiophenone, etc.
whether toluene will react in the same way to form an aldehyde is interesting.

[abroquet]

I used benzaldehyde with alkaline (sodium hydroxide) potassium permanganate, to tame the reaction. I saw similar reaction on the internet.

[ShroomLab]

with phase transfer catalyst you mean something like soap? Nice setup really!

[mohamadwehbe]

Great video 👍, i have a question please, is it possible to create pheneylacetone from benzoic acid ? Thankss

[behonest]

Thank you so much. I wanna ask. If I only have one magnetic stirrer, can I dissolve the potassium permanganate first than add the toluene with koh?

[levtrot]

Why use an oil bath when you can just but the boiling flask on the hot plate? As I can see, you already can place your thermometer in the liquid contained in the boiling flask, so what is the point ?

[Andrew-mycp]

I want to do this oxidation reaction with p-nitrotoluene instead of toluene. The p-nitrotoluene is insoluble in water but melts at around 50°C and will steam distill with the reflux.

My question is, would this reaction still work with nitrotoluene? I think it should but there are no papers I have found of this reaction. In theory the yields would be higher since the benzene ring isn't oxidized due to the nitro group but I don't know if due to the solubility it wouldn't work. Toluene is not miscible in water but it at least distills. The nitroluene will just melt.

Another question I have is if the potassium hydroxide can be substituted for an equimolar amount of sodium hydroxide? I wanted to use sulfuric acid, would this work?

Also the stoichiometry will still be the same as far as moles of nitroluene to moles of permangenate, right? Since the same methyl group is oxidized and nothing else.

Thank you. Also your videos are awesome!

[reformlabs]

By chance, have you tried this reaction using Xylene?

[AussieChemist]

Still not in 4K tho, not that quality is off or anything, it usually doesn’t end in 4K even tho was filmed with a 4K Camera

[science_and_anonymous]

2 questions. Can sodium hydroxide be used and can a simple condenser be used?

[johnathanrendon]

excellent. Apparently distilling it from imitation almond flavor is an option.

[manonbouri]

Thank's for the video ! but why did you add The KOH for me it has worded without it

[jauharial-fath]

can i subsitute the sodium bisulfite with sodium bisulfate ?

[kairanalves]

Why the dropwise of KMnO4 need to be done within 15 minutes

[whitetornadodk]

Why is the re-crystallization step needed?