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A2 chemistry question
identify the organic product of the reaction of excess phosphorus pentachloride with 2-hyrdoxypropanoic acis (lactic acid)
Just confused if you get a acid chloride... or is the 2-hydroxy group involved in the reaction?
Just confused if you get a acid chloride... or is the 2-hydroxy group involved in the reaction?
No need to bump the thread that fast 
PCl5 will replace both OH groups in the molecule
PCl5 will replace both OH groups in the molecule
EierVonSatan
you changed your avatar back
deeps21
How would the full equation look ??
A bit like this
CH3CH(OH)COOH + PCl5 ----> CH3CH(Cl)COCl + stuff
you will need to balance this and work out what the stuff is
JordanCarroll
you changed your avatar back
Indeed
EierVonSatan
A bit like this
CH3CH(OH)COOH + PCl5 ----> CH3CH(Cl)COCl + stuff
you will need to balance this and work out what the stuff is
CH3CH(OH)COOH + PCl5 ----> CH3CH(Cl)COCl + stuff
you will need to balance this and work out what the stuff is
The "stuff" being:
POCl3 + HCl
Hence...
CH3CH(OH)COOH + PCl5 ----> CH3CH(Cl)COCl + POCl3 + HCl
kironkabir
The "stuff" being:
POCl3 + HCl
Hence...
CH3CH(OH)COOH + PCl5 ----> CH3CH(Cl)COCl + POCl3 + HCl
POCl3 + HCl
Hence...
CH3CH(OH)COOH + PCl5 ----> CH3CH(Cl)COCl + POCl3 + HCl
I left that for the OP to work out
You have 6 chlorines on the right and 5 on the left.EierVonSatan
I left that for the OP to work out You have 6 chlorines on the right and 5 on the left.
You have 6 chlorines on the right and 5 on the left.Ooops
I didn't see the dichlorination of the reactant.
I thought I saw a monochlorination.
My eyes have failed me.
Actually hang on, can you please explain why both OH groups were replaced?
I thought PCl5 would only perform nucleophilic substitution only on the OH group of the carboxylic group...
kironkabir
Ooops
I didn't see the dichlorination of the reactant.
I thought I saw a monochlorination.
My eyes have failed me.
Actually hang on, can you please explain why both OH groups were replaced?
I thought PCl5 would only perform nucleophilic substitution only on the OH group of the carboxylic group...
I didn't see the dichlorination of the reactant.
I thought I saw a monochlorination.
My eyes have failed me.
Actually hang on, can you please explain why both OH groups were replaced?
I thought PCl5 would only perform nucleophilic substitution only on the OH group of the carboxylic group...
Oh wait, I understand the reason now. There was an excess of phosphorus pentachloride. That's why all the OH groups got murdered.
In that case, what would the end products be?
I'm guessing what's left over are 2OH, and PCl3
kironkabir
Oh wait, I understand the reason now. There was an excess of phosphorus pentachloride. That's why all the OH groups got murdered.
In that case, what would the end products be?
I'm guessing what's left over are 2OH, and PCl3
In that case, what would the end products be?
I'm guessing what's left over are 2OH, and PCl3
Just use two lots of PCl5 on the left and balance the products on the right
EierVonSatan
Just use two lots of PCl5 on the left and balance the products on the right
Thank you EierVonSatan
P.s. by any chance do you like this band called Tool? I can see some sort of resemblance form your username
kironkabir
Thank you EierVonSatan
P.s. by any chance do you like this band called Tool? I can see some sort of resemblance form your username
P.s. by any chance do you like this band called Tool? I can see some sort of resemblance form your username
Haha, yes I do
You're welcome.
Original post by Mishkaat
Y'all
The question about the nmr / what did you guys fill in the table
The question about the nmr / what did you guys fill in the table
What question about what NMR?
This thread is nearly 7 years old.
Original post by alow
What question about what NMR?
This thread is nearly 7 years old.
This thread is nearly 7 years old.
Ohhh i am sorry ; this exact question was brought this year in unit 4 i thought i was on chem unit 4 2017
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