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Synthesis of cinnamaldehyde (Aldol condensation) 

Random Experiments Int. - Experiments and syntheses
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In this video the synthesis of cinnamaldehyde from benzaldehyde and acetaldehyde is shown.
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30 мар 2022

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Комментарии : 37   
@stevensu6699
@stevensu6699 2 месяца назад
You just saved me so much work for my chem assignment Thank you!!
@doyale2
@doyale2 2 года назад
great to see that you're back!
@THYZOID
@THYZOID 2 года назад
Nice to see you are back making some videos ^^
@alacrity7591
@alacrity7591 2 года назад
Very nice! I synthesized p-Methoxy-Cinnamic Acid from Benzaldehyde via Knoevenagel reaction as part of my undergraduate organic chemistry lab course - I'm specialising in inorganic chemistry, but that synthesis was one of my favourites. This one seems more challenging, at least for getting a good yield, but still very interesting to see!
@djchemtalk2946
@djchemtalk2946 Год назад
Nice
@crabcrab2024
@crabcrab2024 2 года назад
Nice job! Glad U R with us. Keep on! P.S. Could you please provide a reference to the original synthesis? That would be very helpful.
@RaExpIn
@RaExpIn 2 года назад
Thanks! Unfortunately, the procedure is from a german book called "Organikum" by Heinz Becker. And there's no translation :/
@crabcrab2024
@crabcrab2024 2 года назад
@@RaExpIn Ich brauche keine Übersetzung 😉. Dieses Buch ist mir bekannt. Tolles Ding. Danke dir und viel Erfolg und Spaß bei deinen Experimenten!
@RaExpIn
@RaExpIn 2 года назад
Achso :D Es müsste S.521 sein.
@crabcrab2024
@crabcrab2024 2 года назад
@@RaExpIn Danke! 🙂
@RaExpIn
@RaExpIn 2 года назад
Gern geschehen! :)
@chemist27
@chemist27 Год назад
Sir Can you please make a synthesis of di iodomethane? It is the heaviest organic solvent and it can float an piece of aluminum I think that's why I really like it
@PepekBezlepek
@PepekBezlepek 2 года назад
that residue tho 🥴 could be cool to try to work it up, might be a mixture of benzoic and cinnamic acid 😊
@RaExpIn
@RaExpIn 2 года назад
I actually did a few tests on it. As for example reacting it with sodium hydroxide and acid afterwards to precipitate it out.
@dimaminiailo3723
@dimaminiailo3723 2 года назад
I recommend using sulfuric acid as the high temperature bath filler. It is horrible to clean the glassware from cooked oil
@antejl7925
@antejl7925 2 года назад
Hot sulphuric acid is extremely dangerous ..I'd sooner clean dirty glassware than risk that.
@dimaminiailo3723
@dimaminiailo3723 2 года назад
@@antejl7925 I've proposed an alternative to oil. I've never had problems with sulfuric acid bath, btw
@sankarshanharidasan6751
@sankarshanharidasan6751 Год назад
The yield could be increased by adding acetaldehyde in parts to a solution of benzaldehyde and alkali.
@aribinu8910
@aribinu8910 Год назад
Complex synthesis, since it's a challenge to separate benzaldehyde, acetaldehyde and cinnamaldehyde, and they are easily undergo oxidation, the yield was so so, 23%
@Anar10n
@Anar10n 2 года назад
Have you considered using milder catalysts? Like primary amines?
@RaExpIn
@RaExpIn 2 года назад
It was a general procedure. So, I didn't think about it. Would be worth a try. According to Wiki the yield should be at around 60%.
@moongloomable
@moongloomable Год назад
Is a new apparatus swapped or cleaned before the final product? How do you avoid contamination from the previous distillation.
@RaExpIn
@RaExpIn Год назад
Usually, I clean everything with soap and water, then with acetone and at the end with air or just letting it sit over night, before I use it again for the next distillation.
@chemist27
@chemist27 2 года назад
10:08 do you reuse the same cooking oil for other distillations?
@RaExpIn
@RaExpIn 2 года назад
I've been using this for about 10 years now. :)
@ugarit5404
@ugarit5404 2 года назад
Do aldol condensation of acetone pls
@RaExpIn
@RaExpIn 2 года назад
I made a video about dibezalacetone. Or do you mean to react acetone with itself?
@rezaalijanianzadeh4202
@rezaalijanianzadeh4202 2 года назад
Is it possible use Salicylaldehyde instead of benzaldehyde?
@RaExpIn
@RaExpIn 2 года назад
Yes, it's a general procedure. As long as there are no other functional groups, the Aldehyde and CH-acidic compound can be substituted by anything and it's highly likely to work.
@Roknalnwader1
@Roknalnwader1 2 года назад
Thank you, brother, but I want you to have the necessary ingredients. I want the ingredients to make a kilo of Bakelite. How much phenol, formaldehyde and hydrochloric acid should I put?
@juzeralirangwala3539
@juzeralirangwala3539 2 года назад
What u r planning to do with this crude cinnamaldehyde???
@antejl7925
@antejl7925 2 года назад
Pattiserie flavours?
@ThatChemistOld
@ThatChemistOld 2 года назад
If you're gonna use chemdraw, please use a common style like ACS1996
@RaExpIn
@RaExpIn 2 года назад
I'm using Chemsketch, because I don't have a license for ChemDraw anymore. I will have a look at it.
@dattatrayadalvi3749
@dattatrayadalvi3749 Год назад
ok
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