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Topic: Aniline removal  (Read 8203 times)

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Offline nurban

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Aniline removal
« on: January 20, 2010, 02:08:35 PM »
I just did a reaction using aniline as the solvent...Any good ideas on completely removing the excess aniline?

Offline stewie griffin

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Re: Aniline removal
« Reply #1 on: January 20, 2010, 02:51:00 PM »
wash it out with aq. acid

Offline nurban

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Re: Aniline removal
« Reply #2 on: January 20, 2010, 02:57:29 PM »
The product has 2 secondary amines so an aqueous wash may remove product as well

Offline stewie griffin

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Re: Aniline removal
« Reply #3 on: January 20, 2010, 03:00:56 PM »
Haha, wow you're in quite a pickle then  :(. Surely you're going off of some precedent/procedure. What do your references say to do??

Offline stewie griffin

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Re: Aniline removal
« Reply #4 on: January 20, 2010, 03:16:36 PM »
Could you post the reaction? I'm curious as to why you ran it in aniline.... I've never seen anyone use that as a solvent before. Why not DMF?

Offline nurban

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Re: Aniline removal
« Reply #5 on: January 20, 2010, 04:25:29 PM »
The literature says to distill off the aniline, which would probably work well enough, i was hoping there was a shortcut out their so i could skip the distillation.
Aniline is a reactant as well as the solvent in this reaction. SN2 with dibromopropane

Offline stewie griffin

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Re: Aniline removal
« Reply #6 on: January 20, 2010, 05:17:27 PM »
Ah, well then. I was going to suggest distillation next, but, not knowing the product, I wasn't sure if your product could handle it. I'm thinking that's the only way you can really go here.

Offline russellm72

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Re: Aniline removal
« Reply #7 on: February 17, 2010, 07:31:44 AM »
Let me get this right you are reacting aniline with dibromopropane?

Do you actually get a useful product here using a primary amine and a primary alkyl halide? Have you actually analysed your mixture to see you have a decent quantity of product to warrant your purification?

I too have never heard of using aniline as a solvent but in this case it is not the way I would go about synthesising your suspected adduct..

Regards

R.

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