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Sodium Ethoxide and anhydrous EtOH
[quote]The pKa of Ethanol is approx 16, while that of the ester is around 22, so if one made up 1 li ...		 29-3-2008 at 21:00
by: grind
reductive amination with triacetoxyborohydride
You can add 4 or more moles of AcOH to 1 mol of NaBH4, in the cold only triacetoxyborohydride is for ...		 27-3-2008 at 13:38
by: grind
Lithium Al Hydride quick question
[quote][i]Originally posted by jizmaster[/i]
You could see how much is still in there by adding a k ...		 25-3-2008 at 17:08
by: grind
reductive amination with triacetoxyborohydride
As far as I can remember there is an article in which is made a comparison between NaCNBH3 and NaBH( ...		 25-3-2008 at 16:55
by: grind
cautions regarding use of NaH in synthesis
[quote][i]Originally posted by jizmaster[/i]
Someone in uni told me how they ordered some and it ca ...		 25-3-2008 at 16:42
by: grind
N,N-Dimethyltryptamine as fumarate salt
I hope your question is really a hypothetical one.
It´s possible to work with acetone or isopropan ...		 24-3-2008 at 16:47
by: grind
cautions regarding use of NaH in synthesis
[quote][i]Originally posted by Ozone[/i]
Seems to work well,[/quote]
That´s the usual method to r ...		 23-3-2008 at 14:42
by: grind
reduction of allylic acid to corres aldehyde
Carboxylic acid ---> acid chloride (SOCl2) ---> acylphosphonate ester (triethyl phosphite) --- ...		 21-3-2008 at 13:30
by: grind
cautions regarding use of NaH in synthesis
[quote][i]Originally posted by Gargi[/i]
Its always better to use NaH wetted in oil[/quote]
Some r ...		 21-3-2008 at 13:17
by: grind
cautions regarding use of NaH in synthesis
LAH is more dangerous. NaH wetted with oil doesn´t ignite in the air as easy as LAH, but reaction w ...		 18-3-2008 at 20:17
by: grind
Washing and storing glassware.
A good method to unfreeze joints, for example a flask with a cooler:
Place the joints beneath the s ...		 17-3-2008 at 16:59
by: grind
Washing and storing glassware.
[quote]For removing high vacuum grease off of glassware, I've found that starter fluid and toluene w ...		 15-3-2008 at 16:08
by: grind
reductive am. why inert atmosphere?
[quote][i]Originally posted by stoichiometric_steve[/i]
STAB is soluble in toluene...[/quote]
But ...		 8-3-2008 at 12:23
by: grind
Aniline
Distilling aniline in vacuum in the presence of sodium gives a colorless product that darkens only v ...		 28-2-2008 at 20:50
by: grind
cyclohexanone
[quote][i]Originally posted by chemrox[/i]Is there a way to oxidize the alkane?[/quote]
Very diffic ...		 24-2-2008 at 07:16
by: grind
Preparation of cyanides
The way via the cyanohydrine only makes sense, when you can buy the cyanohydrine. It´s cheap but ve ...		 24-2-2008 at 07:11
by: grind
Preparation of cyanides
There is another way to make KCN. I´ve tried this:
Make a concentrated solution of KOH in absolute ...		 23-2-2008 at 15:00
by: grind

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