Making Rose Fragrance from Lemongrass 

Glad to see smaller channels getting sponsors, especially with chemistry as a sometimes controversial subject. Will definiteley check it out!

Also important: you add the pseudo-ionone to the sulfuric/acetic acid mixture instead of the other way around to promote intra instead of intermolecular reaction. Otherwise you get a lot of aldol gunk from it reacting with itself

It's amazing all the chemical syntheses that plants do, seemingly effortlessly, but then you see what it takes to make it synthetically and it's even more amazing.

This one has a ton of steps. I would be overwhelmed. But you did it! I knew you would!

Thats some slick straight to the point chemistry

2:05 I love how the glass rod pretty much disappears in the liquid

That was the least intrusive sponsorship I've ever seen on RU-vid. Congrats!

Such good work man, keep it up!

but did you smell it??? does it really smell like roses? this is a fragrance making video with no smell test :D ♥

damn, 50% yield just seems so cool

Amazing 😺😍 starting to find chemistry more and more interesting each day

great stuff!

Yup lots of good starting places from essential oils of herbs and spices.

Yikes. That had to be painful to do. Multiple vacuum distillations and multiple steam distillations with a whole lot of washing steps. I don't think most people understand just how much sitting there and watching that thing you had to have done. There's a lot of lab automation and monitoring equipment that it would be nice to have for things like this that either just doesn't exist or costs tens of thousands of dollars. A thermocouple that connects to your wifi so you can check it from anywhere would be a good start.

so much work condensed into less than 10 minutes

Very interesting video! I was curious, wouldn’t the product be the beta ionone regardless of the acids chosen given it is in full conjugation and thus the thermodynamic product?

You can make rose oxide from citronellol. You should make 1,3-Benzodioxole, that would be interesting.

Richest source of citral is essential oil from Lemon Myrthle (>95%)

I am a perfumer. Fine synthesis! Just to be perfect, no one ionone (Alfa, beta, gamma, etc) does smell roses :) Roses smell like PEA + Citronellol + traces of beta-Damascone.

cool

Wow, so good to have schlenck with liquid nitrogen for the pump

Cool!

I used lemongrass and ethanol and heated to 70 degrees to boil the ethanol. Can citronella etc oxidize in air? Neat.

May you please find a way to prepare quiet pure rosmary oil?

I wish you described the smells along the way

I have some attention! Beta ionone smells like cedar, not rose! First of all, phenylethyl alcohol has a rose scent and is the basis of modern rose accords, while beta-ionone is part of rose oil, but in small amounts.

How do you recognised its C13 H20 O , my curiosity is not keeping quiet. :) Standard beta ionon odor has berry floral and some way woody too.

Do you have work on cyanoacrylate adhesive?

At this point how do you know that is your compound ? You should characterize in some way, b.p., refractive index, density.

And here I was hoping that there was a way to avoid using ether altogether... since we can't get it easily anymore over here in France. Guess I'll have to actually buy Rose essential oil for my perfume reproductions 😢

why tartaric acid?

But here lemon grass not available

how to separate oxygen from carbon dioxide which are taken from air

Nice, can you replicate skunk odor?🎉

Does anyone know the main ingredient(s) of the smell of blackberries? I think it’s the most amazing smell, but for me it doesn’t last - it’s gone a couple of seconds after I smell it! A bit like the way the smell of cyanide can disappear, only faster.

I would have guessed.beta ionone is way more favoirable cos of the continuos double bonds, whats the recipe for the alfa and what efficiency do you expect from that?

Did the three different fractions have different odours?

can i get citral from any other plant? sorry for the question im really curious if there are alternatives to lemongrass, thanks!

aged lemongrass oil does smell like rose water

Would that also work using citronelle oil? I heard it is pretty similar to lemongrass, unless it's only coincidental [Edit] okay I just double checked, I guess that would most likely save a few steps, it is indeed lemongrass oil, nice

Looks like we have the same idea 😂😂 But my videos are not finished yet

please show us how to make petrol from animal fat

Boop

09:07 this temperature mention is completely USELESS, as distillation is done in vacuum and vhat vaccum was maintained during the distillation you do not tell.

Wonderful video (as always). I like how you stick to organic synthesis and refuse to become another useless NileRed. 🙂🤭

2:30 That's a bit cheated... 😉

My lemongrass decomposed with air and heat.

Nile is dead (metaphorically). Long live Chemiolis.

So many flasks filled past half :/

Whut? Not smells test to see if it smells like roses or just "vaguely reminiscent of roses"? As a NileRed viewer I do not approve! :P