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Pretty Pictures (2)
Ammonium chloride that crystallized out beautifully overnight after postponing the wash up of this 2 ...
28-5-2020 at 12:51
by: Sigmatropic
Repairing a 90s IKA stirrer hotplate
Do you really recommend joining the broken heating element together with aluminum foil? I would cons ...
26-5-2020 at 13:34
by: Sigmatropic
Ika-combimag ret stirring problems
So I checked continuity between the legs of IS2 and the bottom of the pcb which gave variable result ...
26-5-2020 at 12:21
by: Sigmatropic
Sodium Diformylamide for primary amines(and secondary)
I cannot go into details here but, the deprotection can also be done in the same solvent as the init ...
24-5-2020 at 08:20
by: Sigmatropic
Ika-combimag ret stirring problems
Thanks Mateo_swe, I'll get round to doing that soon. I Must agree with you that IS2 looks particular ...
23-5-2020 at 12:27
by: Sigmatropic
Question about how to scale a synth
I'm with Karlos here, but would like to add that you can generally aim at concentrations of your lim ...
19-5-2020 at 18:42
by: Sigmatropic
Thoughts and observations relating to a cheap Vigreux column and condenser
I find them useful as air condensors although straight tubes would probably also suffice.
14-5-2020 at 13:40
by: Sigmatropic
Ika-combimag ret stirring problems
Okay so today I placed a new IR led, in what I really think is the right way (note), and the stirrer ...
13-5-2020 at 11:33
by: Sigmatropic
Sources of peroxide compounds and substitution?
Acetone, a weak acid and an easily available peroxide substitute. Yep, I've heard enough, good bye!
8-5-2020 at 23:43
by: Sigmatropic
The credibility of syntheses around?
[rquote=635162&tid=155297&author=mackolol]Oh yes and speaking about websites that are credib ...
2-5-2020 at 10:16
by: Sigmatropic
The credibility of syntheses around?
Pre ww2 patents from Germany are actually pretty good, maybe some pretty hardcore chemistry involved ...
2-5-2020 at 10:07
by: Sigmatropic
The credibility of syntheses around?
I'd consider orgsyn.org to have some of the more credible syntheses floating around on the internet. ...
1-5-2020 at 08:21
by: Sigmatropic
Coronavirus pandemic model
Now for some actual models. https://science.sciencemag.org/content/early/2020/04/14/science.abb5793
...
15-4-2020 at 10:27
by: Sigmatropic
10 most important name reactions
Based on FMO theory there are only 9 reactions. Perhaps 12 if you count the pericyclic ones as separ ...
4-4-2020 at 23:15
by: Sigmatropic
What blocked my condenser
Someone once told me we amature chemist's have enough to explain already so let's not have gallons o ...
3-4-2020 at 22:58
by: Sigmatropic
LSD on antipsychotics
LSDs effects are mediated through serotonergic and adrenergic receptors. That paliperidone is an inv ...
3-4-2020 at 21:35
by: Sigmatropic
Separation of xylene isomers
I expect something like AlCl3/anhydrous HCl or AlBr3/anhydrous HBr under pressure and high temp. Not ...
3-4-2020 at 13:04
by: Sigmatropic
Separation of xylene isomers
[rquote=633419&tid=155110&author=draculic acid69]Don't the purified isomers rearrange back i ...
3-4-2020 at 09:34
by: Sigmatropic
benzyl alcohol + sulphuric acid = ?
Probably similar to what happens to paramethoxybenzyl protecting groups during the deprotection unde ...
3-4-2020 at 09:17
by: Sigmatropic
Ika-combimag ret stirring problems
P3 (pin10-pin11) reads 1-44 kOhm, looks like it's good
Whilst live it goes from 0-3.9V, like it sho ...
25-3-2020 at 12:36
by: Sigmatropic
SO2 from S8 and H2SO4
It needs a p and e addition funnel. Now I don't consider that hard but a starter might?

Same for ...
24-3-2020 at 13:15
by: Sigmatropic
Wanted : Ideas to cool a 5L flask/mantle quickly
Applying a vacuum will evaporatively cool the flask and its contents. Cooling through reflux then ge ...
24-3-2020 at 09:02
by: Sigmatropic
People inadvertently making explosive disinfectants
Exactly my thought, how can there be an ethanol shortage if we're blending it in fuel? Like, maybe i ...
23-3-2020 at 11:37
by: Sigmatropic
A theoretical total synthesis of chloroquine I thought up this afternoon
Do you have some literature on the reaction your using to make the dichloroquinolone? It seems to me ...
21-3-2020 at 09:40
by: Sigmatropic
Ika-combimag ret stirring problems
Now for the actual insides, first is the stirrer side of things, second (the one with the connection ...
20-3-2020 at 11:43
by: Sigmatropic
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