Hello everyone. I am trying to synthesize a certain compound, and the synthesis first requires hexanal (hexanaldehyde). Is there a way to obtain
hexanal(aside from directly purchasing it) from OTC or easily obtained chemicals? Someone recommended using nylon 66 to me.Fantasma4500 - 7-7-2022 at 00:35
well gasoline contains a fair amount of hexane- thats rather OTC
i believe you may be able to chlorinate this or brominate this into bromo/chlorohexane and then react with NaOH to get hexanol, the alcohol of hexane-
thereafter oxidizing this
the oxidation may be possible by constructing a device where the hexanol can be contained and heated up, an input hole for air, copper wire suspended
in the atmosphere inside and a vent hole to lead out the hexanal, the air and hexanol reacts on the copper to turn into hexanal, otherwise more
typical chemical oxidants should do, H2CrO4 reacts right away with alcohols to give aldehydes.Antigua - 7-7-2022 at 01:11
Hexyl esters (acetate, benzoate, salicylate) are dirt cheap on Perfumers Apprentice. Buy some, hydrolyze it in basic conditions, oxidize the resulting
alcohol and you're done.clearly_not_atara - 7-7-2022 at 05:28
Ozonolysis of "omega-6" unsaturated fatty acids, such as in corn or grapeseed oil, would be expected to give hexanal in addition to malondialdehyde.
Assuming the latter doesn't make too much of a mess, this is potentially very simple and completely OTC. PirateDocBrown - 7-7-2022 at 06:28
well gasoline contains a fair amount of hexane- thats rather OTC
i believe you may be able to chlorinate this or brominate this into bromo/chlorohexane and then react with NaOH to get hexanol, the alcohol of hexane-
thereafter oxidizing this
Never in a million years will attempting this result in anything close to a
single product. First off, gasoline contains a lot more than just hexanes, and fractionating it is likely to be nothing more than a dangerous exercise
in futility. Secondly, it's hexanes. Plural. There are five isomers of hexane, three of which are contained in gasoline in
significant amounts. Even if you managed to isolate solely the hexanes fraction, you'd still have multiple isomers to deal with, when you need pure
n-hexane. Now even if you somehow got pure n-hexane, and you proceeded with free radical halogenation, you'd end up with a mix of many isomers. In
fact, your desired 1-halohexane would be the LEAST favorable product of the resulting soup, because radicals are more stable on more-substituted
carbons. Furthermore, over-halogenating is practically inevitable.
Alkanes are not a viable feedstock for home chemists. Period.
Personally, I would take Antigua's suggestion unless you need it on a kilo scale.unionised - 7-7-2022 at 10:12
How fussy are you about C6?
Heptanal can be obtained by cracking castor oil.CwisGons - 7-7-2022 at 18:19
Alright, thanks everyone! I only need like half a kilogram!
[Edited on 8-7-2022 by CwisGons]draculic acid69 - 13-7-2022 at 00:26
Just buy it. This is the best advice so far.
2nd best option= buy(not make) hexanol
and oxidised it with dichromate or chromic acid.
3rd option do what Antigua suggested.
Trying to get c6 from anywhere else by
fractionation or cracking is not feasible in an amateur
setting. Just buy it or oxidise hexanol and save your
self the hassle of finding out what doesn't work
