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Topic: Chloroacetic acid?  (Read 4455 times)

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Offline Marcus

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Chloroacetic acid?
« on: March 01, 2010, 09:21:08 PM »
How would the reaction between chloroacetic acid and something like this proceed?

ClCH2COOH + Ph-O-Na+ ---->

I'm predicting :

PH-O-CH2-CO2H + NaCl...

Is this correct? or would the reaction site occur at the carbonyl?

Offline eclecticmess07

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Re: Chloroacetic acid?
« Reply #1 on: March 01, 2010, 11:28:32 PM »
Hi Marcus.  Bet you $20 you're in my class.

Think pKa...

Thanks for posting the question about the NMR.  Was struggling with that myself.  :)

Offline Marcus

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Re: Chloroacetic acid?
« Reply #2 on: March 02, 2010, 12:23:46 AM »
Section 408?

Anyway, with pKa in mind, I'm guessing then an acid-base reaction...

ClCH2COOH + Ph-O-Na+ (essentially) ---->

ClCH2COO-Na+ + Ph-OH

Since, chloroacetic acid is the stronger acid, and phenolate is the stronger base they're favored to react and produce chloroacetate and phenol? Is that where you were going? Or am I completely off track?

Offline eclecticmess07

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Re: Chloroacetic acid?
« Reply #3 on: March 02, 2010, 12:50:49 AM »
hah.  right class, wrong section (I'm in 406).

And yes, I'd say it's a straight-forward acid-base rxn, since that's the whole point of adding sodium hydroxide in to fully deprotonate o-cresol.  Adding an acid would just reverse the first reaction step. 

Can't wait for spring break.  ::sigh::

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