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Topic: Esterfication of acids with multiple acidic groups  (Read 5256 times)

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budullewraagh

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Esterfication of acids with multiple acidic groups
« on: August 24, 2004, 10:17:06 AM »
how does one name esters of organic acids that have multiple acidic functional groups (ex citric acid)?  what would it be called with say, 1 of those groups "esterfied"?  what about two?  what about all three?

Offline AWK

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Re:Esterfication of acids with multiple acidic groups
« Reply #1 on: August 25, 2004, 02:59:15 AM »
It is easier to esterify all carboxyl groups at once. Partial esterified esters can be obtained by a careful hydrolysis of di(tri)-ester with stoichiometric amount of KOH or NaOH
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budullewraagh

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Re:Esterfication of acids with multiple acidic groups
« Reply #2 on: August 25, 2004, 09:12:48 AM »
ok, but how do you name them?

Offline movies

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Re:Esterfication of acids with multiple acidic groups
« Reply #3 on: August 25, 2004, 01:47:57 PM »
This is the name that ChemDraw give me if I put an ester on one of the termini of citric acid:

2-hydroxy-2-(2-methoxy-2-oxoethyl)succinic acid

and the systematic name for citric acid:

2-hydroxypropane-1,2,3-tricarboxylic acid

So it looks like you name the ester sidechain separately and tack it on to the name for the diacid.

budullewraagh

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Re:Esterfication of acids with multiple acidic groups
« Reply #4 on: August 25, 2004, 01:54:49 PM »
oh ok thanks

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