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Demethylation of Vanillin and Eugenol
Total yield for the last experimental run looks to be close to 20 g, just removing the last traces o ...
1-12-2018 at 09:58
by: CycloKnight
Demethylation of Vanillin and Eugenol
Its looking like a final synthesis and workup procedure isn't far off now, with provisions for refin ...
30-11-2018 at 10:45
by: CycloKnight
Demethylation of Vanillin and Eugenol
[rquote=557368&tid=92847&author=clearly_not_atara]Oxygen is a jerk. It always climbs into th ...
30-11-2018 at 06:49
by: CycloKnight
Demethylation of Vanillin and Eugenol
After hydrolysis step.
(Previous demethylation step also involved the heating to 100 C. Without in ...
30-11-2018 at 05:31
by: CycloKnight
Demethylation of Vanillin and Eugenol
Thanks! Its all sealed, under argon and in a freezer now.
Just completed another eugenol run with ...
29-11-2018 at 18:40
by: CycloKnight
Demethylation of Vanillin and Eugenol
Total dried yield is 12 g. The alcohol solution is still showing a strong green FeCl3 indication, pe ...
29-11-2018 at 06:08
by: CycloKnight
Demethylation of Vanillin and Eugenol
Update on the latest demethylation experiment, interesting results this evening!

Completed anothe ...
28-11-2018 at 17:24
by: CycloKnight
Demethylation of Vanillin and Eugenol
Thanks for the feedback. So far I've tried both 1 hr NaOH (30%) aq reflux and dilute HCl reflux, wit ...
26-11-2018 at 06:41
by: CycloKnight
Demethylation of Vanillin and Eugenol
http://shodhganga.inflibnet.ac.in/bitstream/10603/161518/4/03_part%201.pdf

"The work on betel lea ...
24-11-2018 at 07:05
by: CycloKnight
Demethylation of Vanillin and Eugenol
Complex decomposition step.
Final reaction mix in the 500 ml RBF. About a third already added to t ...
23-11-2018 at 08:24
by: CycloKnight
Demethylation of Vanillin and Eugenol
Just a short update on the procedure I'm now using.

A while back I had the idea of running the e ...
23-11-2018 at 07:55
by: CycloKnight
Demethylation of Vanillin and Eugenol
Final fraction mp: 38 C
Condenser solids mp: 48-51 C (some dibenzoyl crystals remained solid)

In ...
23-11-2018 at 07:47
by: CycloKnight
Demethylation of Vanillin and Eugenol
Final fraction receiver is on the right. Still crystallizing when the image was taken, soon after co ...
22-11-2018 at 19:00
by: CycloKnight
Demethylation of Vanillin and Eugenol
Results from latest vac distillation.

I see we now have a new player in town. This is the fracti ...
22-11-2018 at 18:11
by: CycloKnight
Demethylation of Vanillin and Eugenol
Finally have some results to update on.

The fragrant compound I described as a major side produ ...
21-11-2018 at 09:52
by: CycloKnight
Demethylation of Vanillin and Eugenol
Not difficult to do but I don't have any TLC plates I'm afraid. Its on my list of things still to ac ...
9-10-2018 at 10:43
by: CycloKnight
Demethylation of Vanillin and Eugenol
FeCl3 solution test of assumed hydroxychavicol.

[img]https://i.imgur.com/pA1tscZ.jpg[/img] [img]h ...
9-10-2018 at 05:35
by: CycloKnight
Demethylation of Vanillin and Eugenol
Thanks for the suggestion, I'll try that test after the next run. I had a mishap a short while ago. ...
1-10-2018 at 16:27
by: CycloKnight
HCl acidified sample
This is about a gram of assumed potassium catecholate, several drops of HCl were added directly with ...
1-10-2018 at 12:35
by: CycloKnight
Demethylation of Vanillin and Eugenol
A few words about product purity, I can't offer any guarantees as it hasn't been thoroughly analysed ...
1-10-2018 at 09:30
by: CycloKnight
Demethylation of Vanillin and Eugenol
Recovered salt from the first of two extractions.

[img]https://i.imgur.com/NWgRsUw.jpg[/img]

...
30-9-2018 at 18:13
by: CycloKnight
Update
Further from the last run, the workup on the remaining 200 ml of the toluene extractions and vacuum ...
30-9-2018 at 12:22
by: CycloKnight
Demethylation of Vanillin and Eugenol
After cleaning up all the glassware, work area smells like a freshly cleaned public restroom. Can al ...
27-9-2018 at 08:58
by: CycloKnight
Disappointing results.
I attempted a 13g eugenol demethylation (slight deficiency compared with the vanillin patent). React ...
27-9-2018 at 03:59
by: CycloKnight
Demethylation of Vanillin and Eugenol
The LiCl route is one I've considered, I have some LiCl (made from Li2ClO3 and HCl aq) and about 500 ...
25-9-2018 at 02:57
by: CycloKnight
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