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Topic: separation of barbituric acid  (Read 3937 times)

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Offline ati

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separation of barbituric acid
« on: September 01, 2012, 08:14:51 AM »
I have a reaction in (H2O and Ethanol), which results a solid that can be solved in DMSO and hot ethanol.
while Barbituric acid can be solved in hot ethanol too.
How to separate barbituric acid from reaction?

Offline discodermolide

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Re: separation of barbituric acid
« Reply #1 on: September 01, 2012, 08:16:32 AM »
I have a reaction in (H2O and Ethanol), which results a solid that can be solved in DMSO and hot ethanol.
while Barbituric acid can be solved in hot ethanol too.
How to separate barbituric acid from reaction?

Do a base extraction with Na carbonate and a suitable solvent.
Development Chemists do it on Scale, Research Chemists just do it!
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Offline ati

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Re: separation of barbituric acid
« Reply #2 on: September 01, 2012, 08:23:35 AM »
I have a reaction in (H2O and Ethanol), which results a solid that can be solved in DMSO and hot ethanol.
while Barbituric acid can be solved in hot ethanol too.
How to separate barbituric acid from reaction?

Do a base extraction with Na carbonate and a suitable solvent.

T.M of me has NH groups. it is solved in solution of NAOH .what can I do?

Offline discodermolide

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Re: separation of barbituric acid
« Reply #3 on: September 01, 2012, 08:27:14 AM »
I have a reaction in (H2O and Ethanol), which results a solid that can be solved in DMSO and hot ethanol.
while Barbituric acid can be solved in hot ethanol too.
How to separate barbituric acid from reaction?

Do a base extraction with Na carbonate and a suitable solvent.

T.M of me has NH groups. it is solved in solution of NAOH .what can I do?

What is T.M?
If it has two amines make the solution acidic with HCl and make the mono or the dihdrochloride salt, which may crystallise.
Development Chemists do it on Scale, Research Chemists just do it!
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Offline ati

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Re: separation of barbituric acid
« Reply #4 on: September 01, 2012, 08:43:09 AM »
I have a reaction in (H2O and Ethanol), which results a solid that can be solved in DMSO and hot ethanol.
while Barbituric acid can be solved in hot ethanol too.
How to separate barbituric acid from reaction?

Do a base extraction with Na carbonate and a suitable solvent.

T.M of me has NH groups. it is solved in solution of NAOH .what can I do?

What is T.M?
If it has two amines make the solution acidic with HCl and make the mono or the dihdrochloride salt, which may crystallise.

Part of the T.M. (target molecule) is barbituric acid. The problem is separation of excessive barbituric acid from reaction.

Offline discodermolide

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Re: separation of barbituric acid
« Reply #5 on: September 01, 2012, 08:46:39 AM »
I have a reaction in (H2O and Ethanol), which results a solid that can be solved in DMSO and hot ethanol.
while Barbituric acid can be solved in hot ethanol too.
How to separate barbituric acid from reaction?

Do a base extraction with Na carbonate and a suitable solvent.

T.M of me has NH groups. it is solved in solution of NAOH .what can I do?

What is T.M?
If it has two amines make the solution acidic with HCl and make the mono or the dihdrochloride salt, which may crystallise.

Part of the T.M. (target molecule) is barbituric acid. The problem is separation of excessive barbituric acid from reaction.

I just said; make it acidic with HCl make the hydrochloride salt or the di-hydrochloride salt and crystallise it.
Development Chemists do it on Scale, Research Chemists just do it!
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Offline curiouscat

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Re: separation of barbituric acid
« Reply #6 on: September 01, 2012, 11:13:43 AM »
I just wanted to gratuitously comment that I love your answers  discodermolide!

Wish I was as smart as you!    :)

Offline discodermolide

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Re: separation of barbituric acid
« Reply #7 on: September 01, 2012, 11:29:28 AM »
I just wanted to gratuitously comment that I love your answers  discodermolide!

Wish I was as smart as you!    :)

Thank you for the compliment. I am not smart, just have years of experience in organic chemistry. Don't ask how many.
Development Chemists do it on Scale, Research Chemists just do it!
My Research History

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