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SOCl2: carboxylic acid to acid chloride: impurity!
Sorry I should clarify. A drop or two (say, 5 uL) ought to be sufficient for a small scale reaction. ... |
24-2-2013 at 05:34
by: DJF90 |
Defining stereochemical terms - pseudo and allo
Eliel's book/bible on stereochemisty would be my first place to start. If he doesn't have it in ther ... |
24-2-2013 at 05:15
by: DJF90 |
SOCl2: carboxylic acid to acid chloride: impurity!
Where do you see that as a problem? I dont see anyone advocating the use of water, other than my men ... |
21-2-2013 at 13:25
by: DJF90 |
SOCl2: carboxylic acid to acid chloride: impurity!
Problem with using DMF even in catalytic amounts ("a few drops" is all that is usually specified, no ... |
19-2-2013 at 13:12
by: DJF90 |
The short questions thread (3)
gsd: I did an esterification with isopropanol, and it took 18 hrs to reach 94% by HPLC. The methyl e ... |
8-2-2013 at 13:21
by: DJF90 |
Pretty Pictures (1)
@ boffis: The two forms will be polymorphs |
8-2-2013 at 13:04
by: DJF90 |
SOCl2: carboxylic acid to acid chloride: impurity!
Why are you washing with sodium carbonate after the formation of the acid chloride. Use toluene as a ... |
22-1-2013 at 13:31
by: DJF90 |
p-benzoquinone HELP!!!
You allowed the product to crystallise for long enough?
Hydrogen peroxide should not decompose th ... |
17-1-2013 at 11:02
by: DJF90 |
Real chemistry is dying out, why?
Economy of scale is not the same thing as saying its cheaper to work on a larger scale. If you wish ... |
16-1-2013 at 13:06
by: DJF90 |
Quantum Physics . . . Hot Cold?
Does -0*C exist? Apparently so, according to my refrigerated chiller. It counts down 02, 01, 00, -00 ... |
14-1-2013 at 10:59
by: DJF90 |
Negative inductive effect in nitro group...
Its because nitrogen is electronegative element and it has a positive charge on it. Thus it draw ele ... |
14-1-2013 at 06:51
by: DJF90 |
Negative inductive effect in nitro group...
Its because nitrogen is electronegative element and it has a positive charge on it. Thus it draw ele ... |
14-1-2013 at 03:43
by: DJF90 |
Three solvents miscibility
I've heard of someone doing a phase separation/extraction using Methanol. The issue is to load up th ... |
13-1-2013 at 05:08
by: DJF90 |
tcca, bromine and ncl3
@Valentine: Are you sure the compound in question was trifluoroisocyanuric acid, and not cyanuric fl ... |
3-1-2013 at 20:24
by: DJF90 |
Pretty Pictures (1)
Nope. Its -5*C thermostatted with a refrigerated coolant circulator. All that ice didn't suddenly ap ... |
3-1-2013 at 20:22
by: DJF90 |
Pretty Pictures (1)
I added a description  |
3-1-2013 at 18:06
by: DJF90 |
Pretty Pictures (1)
[file]21794[/file]
EDIT: B10 double surface (davies) condenser at -5*C for preparation of ethyl bro ... |
3-1-2013 at 16:28
by: DJF90 |
The synthesis of 1 and 2-naphthols from Napththalene
The problem with going via the amines is that its difficult to get regiopure nitronaphthalene and th ... |
3-1-2013 at 07:47
by: DJF90 |
Are all s-block elements metals?
Ah Watson, trust you to spoil the fun by invoking quantum mechanics. Its been a couple years since I ... |
2-1-2013 at 15:58
by: DJF90 |
Are all s-block elements metals?
The question is not can they be considered to be, but are they s-block elements. The answer is no. Y ... |
31-12-2012 at 08:36
by: DJF90 |
Are all s-block elements metals?
The chemistry of lead and carbon are not so different; though it appears so if you only consider the ... |
31-12-2012 at 06:37
by: DJF90 |
Are all s-block elements metals?
And what periodic table are you looking at? Lead (Pb) is an element in group IV (sometimes called gr ... |
31-12-2012 at 04:49
by: DJF90 |
Are all s-block elements metals?
The problem with what you say is that elements are grouped based on their chemical reactivities.Heli ... |
30-12-2012 at 18:06
by: DJF90 |
Are all s-block elements metals?
For a start, I'd like to point out helium isnt in the S block, and neither is hydrogen! (although H ... |
30-12-2012 at 15:49
by: DJF90 |
Alkali metal synthesis
Isolation is the separation of one desired component from a mixture, wherein the target material alr ... |
29-12-2012 at 11:07
by: DJF90 |
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