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Topic: Anhydride  (Read 4104 times)

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Offline Rutherford

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Anhydride
« on: March 20, 2013, 07:27:19 AM »
By what conditions can anhydrides be reduced and what are the products?
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Offline discodermolide

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Re: Anhydride
« Reply #1 on: March 20, 2013, 07:44:04 AM »
That depends on the anhyride. You need to be more specific.
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Offline Rutherford

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Re: Anhydride
« Reply #2 on: March 20, 2013, 07:56:02 AM »
For example acetic acid anhydride.
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Offline discodermolide

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Re: Anhydride
« Reply #3 on: March 20, 2013, 09:21:18 AM »
Quote from: Raderford on March 20, 2013, 07:56:02 AM
For example acetic acid anhydride.

Sodium borohydride, lithium aluminium hydride, di-isobutylaluminium hydride and so on. If the reducing agent is strong enough you will get the alcohol produced.
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Offline Rutherford

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Re: Anhydride
« Reply #4 on: March 20, 2013, 09:43:37 AM »
Okay, thanks.
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Offline Rutherford

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Re: Anhydride
« Reply #5 on: March 20, 2013, 10:49:45 AM »
Would acetic acid anhydride react with NaHCO3?
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Offline discodermolide

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Re: Anhydride
« Reply #6 on: March 20, 2013, 10:51:53 AM »
Yes it would, what would it give?
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Offline Babcock_Hall

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Re: Anhydride
« Reply #7 on: March 20, 2013, 11:08:49 AM »
I don't recall ever seeing a symmetric anhydride giving two aldehydes, but there are many biochemical examples of mixed anhydrides giving an aldehyde plus an acid.  Esters can be reduced to aldehydes, depending on the alcohol and reductant used. 
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Offline Rutherford

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Re: Anhydride
« Reply #8 on: March 20, 2013, 01:11:40 PM »
The acid and can't think of the other product  ???.
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Offline discodermolide

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Re: Anhydride
« Reply #9 on: March 20, 2013, 01:13:02 PM »
What do acids do with sodium bicarbonate?
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Offline Rutherford

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Re: Anhydride
« Reply #10 on: March 20, 2013, 02:09:01 PM »
Would  it be (CH3CO)2O+NaHCO3 :rarrow: CH3COONa+CH3COOH+CO2?
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Offline discodermolide

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Re: Anhydride
« Reply #11 on: March 20, 2013, 02:13:02 PM »
Something like that, yes.
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Offline Rutherford

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Re: Anhydride
« Reply #12 on: March 20, 2013, 02:53:53 PM »
Good. Thanks again.
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