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Topic: dakin reaction  (Read 5626 times)

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Offline penny-zzc

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dakin reaction
« on: April 23, 2007, 09:06:29 AM »
   i carry  this reaction two weeks ,but no good result,i add NaOH  then H2O2(excessive).who can give me some advice. i appreciate to your suggestion.
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Offline Bakegaku

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Re: dakin reaction
« Reply #1 on: April 23, 2007, 04:37:15 PM »
Could you be a bit more specific?  I.E. what concentrations did you use in each solution, how was each solution added, etc.
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Offline penny-zzc

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Re: dakin reaction
« Reply #2 on: April 23, 2007, 11:05:12 PM »
 thank you for your attention!
i add 3 eq  NaOH,stir at the temperature 0 centigrade,then add 2eq 30% H2O2 ,react 30 mins.
then rise the temperature to 45 centigrade. TLC find no new pot appear.
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Offline penny-zzc

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Re: dakin reaction
« Reply #3 on: April 23, 2007, 11:11:31 PM »
  thank you  for your attention!
 i  add 3 eq NaOH solution,keep the temperature at 0 centigrade,then add 3 eq  30%H2O2,REACT for 30 mins,even several hours,TLC  detect,find no new pot appears, i don't kown what's reason?
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Offline PRIYA1022

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Re: dakin reaction
« Reply #4 on: April 25, 2007, 09:10:51 PM »
Are you sure its an acetyl group on the ring?
Dakin reaction converts benzaldehydes to phenols.
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Offline penny-zzc

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Re: dakin reaction
« Reply #5 on: April 25, 2007, 10:52:51 PM »
but when it is an acetyl group,it also can react,some reaserch have proved that.i don't kow how to get my product?
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Offline PRIYA1022

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Re: dakin reaction
« Reply #6 on: April 26, 2007, 01:36:06 AM »
Do you have a literature reference?
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