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Protecting weak secondary amines - driving me crazy!
Use tosyl chloride and pyridine, that works for a great leaving group. |
17-11-2017 at 08:54
by: karlos³ |
Noticing Things that Happen All the Time
I noticed that every breath I take, I only absorb a few percent of oxygen instead of the whole conta ... |
4-11-2017 at 16:41
by: karlos³ |
Sodium cyanate from hydroxide or carbonate?
For sodium cyanate, hydroxide is better, as it doesn´t requires as high temperatures.
You can appa ... |
6-10-2017 at 23:17
by: karlos³ |
3-acetylindole
Thanks Dr.Bob!
That seems plausible, regarding tosic acid being a good leaving group, as is phosph ... |
6-10-2017 at 19:24
by: karlos³ |
3-acetylindole
Thanks for all the input given, more or less helpful but always very nice and welcome, I appreciate ... |
6-10-2017 at 07:01
by: karlos³ |
Preparation of ionic nitrites
Isn´t the stuff used for preservation of meat, "curing salt", just like 1% NaNO2 at most, the remai ... |
2-10-2017 at 17:56
by: karlos³ |
3-acetylindole
Thank you, but I should have been much more precise, since purchasing the title compound is an optio ... |
11-9-2017 at 16:59
by: karlos³ |
3-acetylindole
Yeah thank you, I know that method...
but buying SnCl4 is more expensive than buying the needed am ... |
5-9-2017 at 06:57
by: karlos³ |
3-acetylindole
Hello!
I want to make this product instead of purchasing it, but after only a single attempt that ... |
4-9-2017 at 17:19
by: karlos³ |
Acquisition and/or synthesis of thiocyanates without using cyanide
Why not using thiourea and the alkali metal carbonate or hydroxide of your choice and melting them t ... |
4-9-2017 at 16:43
by: karlos³ |
Encrypted Lab Notebook
I always reply to the "I´ve got nothing to hide", with "neither have I, but I still prefer to have ... |
8-8-2017 at 03:23
by: karlos³ |
When Chemistry Goes Wrong
Alright this happened quite some years ago, but I remember it everytime I put some water-sensitive r ... |
7-8-2017 at 09:12
by: karlos³ |
Encrypted Lab Notebook
I´ll keep my handwriting as encryption, works like a charm!
Always had a worse handwriting ever, ... |
7-8-2017 at 08:52
by: karlos³ |
OTC glacial acetic acid need help
Damn LD, I hope you haven´t discarded the hydrolysis experiment... you should, even with the lack o ... |
2-8-2017 at 12:51
by: karlos³ |
Preparation of aluminium triethoxide without mercury?
Melgar didn´t say I was completely wrong, just somewhat ;D
That´s ok, his explanation was really ... |
2-8-2017 at 09:20
by: karlos³ |
OTC glacial acetic acid need help
Yeah you should really learn to proper calculate stöchiometric amounts.
If you have a mixture, you ... |
1-8-2017 at 17:59
by: karlos³ |
Preparation of aluminium triethoxide without mercury?
What about activating the Al similar to the others ways to activate Mg metal in a grignard? I.e. a q ... |
1-8-2017 at 12:37
by: karlos³ |
Sulforaphane synthesis for the amateur
Not sure how you would proceed from there, but sodium glutamate is very accessible and may be conver ... |
1-8-2017 at 12:15
by: karlos³ |
Preparation of aluminium triethoxide without mercury?
It works, see here: https://www.researchgate.net/publication/279653949_Catalytic_mechanism_of_iodine ... |
1-8-2017 at 11:19
by: karlos³ |
quenching a grignard/NH4Cl substitute
I need to quench a grignard reaction, and in this case the reaction is usually quenched using a satu ... |
29-7-2017 at 11:08
by: karlos³ |
OTC glacial acetic acid need help
You would add one mole acetic anhydride to one mole H2O, to result in two molecules of acetic acid.
... |
29-7-2017 at 10:25
by: karlos³ |
OTC glacial acetic acid need help
You have Ac2O, no? You mention it in another thread.
Are you really that determined to make glacial ... |
29-7-2017 at 07:43
by: karlos³ |
Have any of the sciencemadness members discovered anything?
Do chemicals unreported in the literature, even slight variations of known compounds, count as disco ... |
24-7-2017 at 06:11
by: karlos³ |
latest glassware purchase
Are those empty pill blisters at the left on the bottom picture of tsathoggua1?   |
16-7-2017 at 10:08
by: karlos³ |
OTC Oxalyl Chloride Challenge
The Anthony-Speeter synthesis of indole glyoxylic amides is another quite interesting application of ... |
8-7-2017 at 13:09
by: karlos³ |
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