Here is an interesting surface-mediated oxidation of alcohols using bismuth nitrate and clay (montmorillonite).
The procedure calls for the use of alcohol, montmorillonite KSF with bismuth nitrate dissolved in THF. The solvent is separated and the mixture
extracted with dichloromethane and concentrated to obtain the crude product, which can be purified by column chromatography and crystallization
depending on the product.
I can no longer get the exact clay, but I wonder if Bentonite Clay Montmorillonite Fine Powder from Amazon would work. Worth a try in the future
because the yields are quite high and would be fun to scale up. Example: 1-phenylethanol to acetophenone is an 89% yield.
[Edited on 29-1-2018 by Chemichael]Nicodem - 29-1-2018 at 13:43
Provide the reference. We do not tolerate attempts at plagiarism on this forum.Metacelsus - 29-1-2018 at 14:28
That paper doesn't discuss the possibility of using different types of clay (or even using something else entirely). I would guess that a wide variety
of things might work; you could definitely try. They do mention that silica and alumina give messy products.
I would have liked to see the authors include at least one control, with no clay added, in order to show the clay is necessary.
(Also, there's a mistake in the paper; they accidentally write 2-phenylethanol instead of 1-phenylethanol at one point.)
[Edited on 1-29-2018 by Metacelsus]Chemichael - 29-1-2018 at 14:47
Yea, that's true, that would have been nice if they included a control to show the difference of the surface-mediated reaction.
I was glad I found another use for the bismuth metal I have, so I thought I would share it. I will probably try this in the future with the
Montmorillonite powder and without and I will post my findings and yield when I get to doing this. byko3y - 30-1-2018 at 08:05
Let me teach you what bullshit is:
- authors are from pakistan, india, iran;
- article mentiones microwave, clays, simple ionic liquids;
- yields of the products are excellent, but there are no verifiable data on their properties.Chemichael - 30-1-2018 at 08:44
I wouldn't call it bullshit. There is something there. If you don't like bismuth nitrate there is also iron nitrate that can do the same thing. https://www.sciencedirect.com/science/article/pii/S004040390...
Is this one bullshit too?Texium - 30-1-2018 at 13:12
Well, Tetrahedron Letters has a reputation for not being the most thoroughly
reviewed journal, so I wouldn't say it's bullshit, but that you should probably investigate it yourself before deciding if it's legit.byko3y - 30-1-2018 at 23:20
Chemichael, yes, it's is bullshit too. US environmental protection agency is known to attract indians, probably because of weaker
supervision.battoussai114 - 31-1-2018 at 17:13
