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Substitute for dioxane
Yes, that is exactly my question: Could I use Na2CO3 instead? |
19-9-2011 at 11:32
by: maxidastier |
Substitute for dioxane
Is there another way aside from potassium carbonate to create an organic layer containing mainly Dio ... |
19-9-2011 at 01:57
by: maxidastier |
Substitute for dioxane
It's really a mess. The problem is, after adding the water to make the p-TsOH crystallize as the mon ... |
11-9-2011 at 08:23
by: maxidastier |
Substitute for dioxane
Thanks for your input!
But I still don't know what has happened to my TsOH... |
10-9-2011 at 01:17
by: maxidastier |
Substitute for dioxane
This is now my second attempt to make p-TsOH from H2SO4 and Toluene.
I've with the help of two lite ... |
9-9-2011 at 08:38
by: maxidastier |
Substitute for dioxane
Can HCl destroy the p-TsOH if it isn't removed immediately? |
8-9-2011 at 01:27
by: maxidastier |
Substitute for dioxane
I didn't want to recover the catalyst, but if you say a continuous process isn't possible, ok then.
... |
26-8-2011 at 00:28
by: maxidastier |
Substitute for dioxane
AFAIK you don't use the sulphate but the p-TsOH monohydrate.
I've one last question before I try it ... |
25-8-2011 at 09:36
by: maxidastier |
Substitute for dioxane
Thank you! |
25-8-2011 at 02:30
by: maxidastier |
Substitute for dioxane
Sry, but I didn't now the "inverted funnel method". My literature tells me to bubble through water.. ... |
24-8-2011 at 06:51
by: maxidastier |
Substitute for dioxane
Ok, thanks for your reply. But can I reach a higher concentration of HCl by bubbling it through wate ... |
23-8-2011 at 12:30
by: maxidastier |
Substitute for dioxane
So, it's easier to dissolve the crude TsOH in conc. HCl, boil and cool down?
Because bubbling HCl g ... |
23-8-2011 at 00:36
by: maxidastier |
Substitute for dioxane
What is the better way to precipitate the p-TsOH: Boiling and cooling in conc. HCl or bubbling HCl g ... |
22-8-2011 at 10:41
by: maxidastier |
Wanted: prep for Tosyl acid
What is the better way to precipitate the p-TsOH? Add conc. HCl aq. or passing in gaseous HCl? Do th ... |
13-8-2011 at 04:36
by: maxidastier |
Substitute for dioxane
I understand what you mean, but did this lead to my bad 35% yield? |
10-8-2011 at 07:38
by: maxidastier |
Substitute for dioxane
I always thought an vacuum mantle would be better fro fractionating. Maybe it is, but only in combin ... |
10-8-2011 at 05:36
by: maxidastier |
Substitute for dioxane
Well, I can't let air flow through the mantle, because the mantle is evacuated-->vacuum mantle (g ... |
9-8-2011 at 12:43
by: maxidastier |
Substitute for dioxane
I've got a vacuum jacketed vigreux column. That's what German-English google translates.
The vacuum ... |
9-8-2011 at 12:03
by: maxidastier |
Substitute for dioxane
Sry, but what are we talking about right now?
About the synthesis or removing water or...?
As fo ... |
9-8-2011 at 10:51
by: maxidastier |
Substitute for dioxane
Actually, I used quite a lot NaOH and not everything dissolved...
Furthermore the azaeotrope b.p. w ... |
9-8-2011 at 01:25
by: maxidastier |
Substitute for dioxane
[quote]
Even crude TsOH, containing some o- and m- isomers, generally is OK for use as a catalyst ... |
8-8-2011 at 10:15
by: maxidastier |
Substitute for dioxane
Thank you anyway Nicodem. I'm not that stupid as it seems. I just don't like making experiments with ... |
3-8-2011 at 08:18
by: maxidastier |
Substitute for dioxane
ok, then. How many grams of TsOH would you use for dehydrating 200ml ethanediol? |
29-7-2011 at 08:29
by: maxidastier |
Substitute for dioxane
[quote]
1,4-dioxane was synthesis by dehydration of ethanediol using p-toluene sulphonic acid as ... |
23-7-2011 at 06:26
by: maxidastier |
Substitute for dioxane
No, I can not get toluene. It's restricted in Germany for "common people". Fuck it! |
19-7-2011 at 07:52
by: maxidastier |
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