December 25, 2024, 09:01:56 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: dakin reaction  (Read 5623 times)

0 Members and 2 Guests are viewing this topic.

Offline penny-zzc

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
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.
Logged

Offline Bakegaku

  • Full Member
  • ****
  • Posts: 269
  • Mole Snacks: +20/-5
  • Gender: Male
  • Hydrogen peroxide is my miracle cure to everything
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.
Logged
"True knowledge exists in knowing that you know nothing"
-Socrates

"I see, I forget.  I hear, I remember.  I do, I understand"
-Confucius

"Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet."
- Albert Einstein?

"American cartoons place characters in situations; anime
places situations around characters.  Anime characters
are not like fictional characters but more like fictional
people; their actions stem directly from their personalities,
and not just as a means to move the story's plot
forward.  We are made to sympathize with them, and
not simply be entertained by them."
~John Oppliger~

Offline penny-zzc

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
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.
Logged

Offline penny-zzc

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
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?
Logged

Offline PRIYA1022

  • Regular Member
  • ***
  • Posts: 61
  • Mole Snacks: +5/-2
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.
Logged

Offline penny-zzc

  • New Member
  • **
  • Posts: 4
  • Mole Snacks: +0/-0
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?
Logged

Offline PRIYA1022

  • Regular Member
  • ***
  • Posts: 61
  • Mole Snacks: +5/-2
Re: dakin reaction
« Reply #6 on: April 26, 2007, 01:36:06 AM »
Do you have a literature reference?
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links