Synthesis of Dibenzoylmethane

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  • čas přidán 26. 06. 2018
  • Preparation of a 1,3-diketone by crossed Claisen condensation.
    Patreon: / tomslab
    TGPOP:
    / dorcotbaconphd
    Aussie Chemist:
    / @aussiechemist
    Clifford Robbins-Sennewald: / @clifford8497
    Piperliam: / @piperliam
    www.orgsyn.org/demo.aspx?prep=...
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Komentáře • 21

  • @TomsLab
    @TomsLab  Před 6 lety +4

    I forgot to mention that I took the melting point and found to be 68-70 C. The literature MP is 77-78 but OrgSyn says that occasionally a lower melting form is obtained which melts at 71-72.

  • @Rhodanide
    @Rhodanide Před 6 lety +2

    Excellent vid. Bravo

  • @chemistryscuriosities
    @chemistryscuriosities Před 6 lety +3

    Great job and great synthesis. Sorry I can't contribute right now but funds are slim while setting up my own lab

    • @TomsLab
      @TomsLab  Před 5 lety

      I understand, I have the same problem. If I had the funds I wouldn't be asking for support lol. Maybe my lab will be well funded when I'm an adult...

  • @AussieChemist
    @AussieChemist Před 6 lety +2

    2:20 try to avoid the use of time lapse when the frame isn’t perfectly stable, the time lapse amplified the amount of shaking appeared to be . a triple can be really useful when it comes to doing time lapse, good chemistry as always, keep it up.

    • @TomsLab
      @TomsLab  Před 5 lety

      I have no idea why I didn't use a tripod here. Good call.

  • @bikerdave1274
    @bikerdave1274 Před 5 lety +1

    Rhodanide sent me, great to find more superb chemistry channels 😁

    • @TomsLab
      @TomsLab  Před 5 lety

      It's good to have you :)

  • @spiderdude2099
    @spiderdude2099 Před 3 lety

    I’m assuming that you can limit the thickness of the rxn mixture by diluting it in ethanol maybe?

  • @benzen3179
    @benzen3179 Před 3 lety

    can i just distil off excess ethyl benzoate without applying vacuum? that is, distil under atmospheric pressure.

  • @brandonpetz6850
    @brandonpetz6850 Před rokem

    Could you use MEK instead of acetophenone?

  • @spookywizard4980
    @spookywizard4980 Před 6 lety +1

    You could use methyl benzoate and methoxide too right?

    • @TomsLab
      @TomsLab  Před 5 lety

      Yeah, that should be fine. I only used the ethyl ester because I was running low on methanol at the time of synthesis. Usually I prefer the cheaper methyl alcohol.

  • @quimlast7180
    @quimlast7180 Před 5 lety

    Why the low yield? This is supposed to be a very robust reaction.

    • @TomsLab
      @TomsLab  Před 5 lety +1

      Probably poor mixing. The reaction mixture became very thick and my coat hanger wire was not very effective.

  • @moritzschaferalthaus3461
    @moritzschaferalthaus3461 Před 6 lety +1

    May I ask how old you are?

  • @DaPudge1985
    @DaPudge1985 Před 5 lety

    Fuckin bouncin tune

  • @zillertalernazihass
    @zillertalernazihass Před 3 lety

    Can I usw NaOH