| Search |
| [Next Page] |
HCl gas from H3PO4 + NaCl
I did UTFSE, but did not really come up with a lean answer to this question - can anyone help? - H2S ... |
15-2-2011 at 20:13
by: zephler |
100% aqueous NaOH?? - yes it was brought up before
whats odd is that you are claiming that you know what the author meant and used, even though the aut ... |
7-1-2011 at 16:10
by: zephler |
100% aqueous NaOH?? - yes it was brought up before
I know where your problem is, you are getting hung up on the units -- no one ever said it was unit l ... |
7-1-2011 at 15:50
by: zephler |
Finally !!! How topethe 100% NaOH solution question answered!!! straight from the patent writer!!!!
it seems that my idea (will get to in a min), that was deemed "nonsense" by a super moderator, turne ... |
7-1-2011 at 02:22
by: zephler |
why is it that 4-piperidone with a ketone functionality
why is it that most people sell what they call 4-piperidone hcL monohydrate that has a diol function ... |
23-12-2010 at 06:21
by: zephler |
important! piperidone with two -OH vs. the preferred =O one
Ok, so a friend is trying to buy 4-piperidone (I always thought it was 4-piperidinone) from some chi ... |
22-12-2010 at 23:36
by: zephler |
33% conc to fuming HBr in GAA in-situ?
yes for demethylation, but not for the bromination of alkenes, is your idea of a HBr generator H3PO4 ... |
21-12-2010 at 19:23
by: zephler |
33% conc to fuming HBr in GAA in-situ?
it's coveted because there is endless discussion about how to make it - since getting a cylinder of ... |
21-12-2010 at 09:14
by: zephler |
33% conc to fuming HBr in GAA in-situ?
would it be possible to simply pour in an equal volume of HBr to GAA, and then add an excessive amou ... |
20-12-2010 at 17:57
by: zephler |
100% aqueous NaOH?? - yes it was brought up before
[rquote=195420&tid=15035&author=zephler]my apologies for not posting the article - it is se ... |
16-12-2010 at 20:54
by: zephler |
100% aqueous NaOH?? - yes it was brought up before
[rquote=194735&tid=15035&author=DJF90]Unfortunately not, that would be a 50%w/v (=w/w) solut ... |
11-12-2010 at 12:09
by: zephler |
100% aqueous NaOH?? - yes it was brought up before
Yes, I used the search engine, unfortunately though, they question was never really answered, instea ... |
10-12-2010 at 16:50
by: zephler |
Reductive amination of ketones with Zn in acetic acid!
[rquote=194542&tid=14990&author=jon]no, but at this point i would extract it.
and wash all ... |
10-12-2010 at 15:30
by: zephler |
Reductive amination of ketones with Zn in acetic acid!
[rquote=194177&tid=14990&author=chemrox]The N-alkylation of piperidones with halo-alkanes is ... |
10-12-2010 at 15:14
by: zephler |
reductive amination with Zn and acetic acid?
has anyone attempted this reaction? A bifunctional molecule (with an amine and a ketone group, the ... |
7-12-2010 at 20:13
by: zephler |
33% (or stronger?) homemade HBr in acetic acid
Since I've only ever seen 33% HBr in acetic acid, I assume this is the strongest you can get (althou ... |
4-12-2010 at 22:18
by: zephler |
NBS usage and solubility?
Thank you for pointing out the grievous error that I made with respect to the product! Oh well, it ... |
4-12-2010 at 21:38
by: zephler |
NBS to make bromohydrin, DCM extract has Br2 in it?
a bromonation was attempted with NBR, in acetonitrile and H2O - now the technique was a bit sloppy. ... |
4-12-2010 at 16:32
by: zephler |
NBS usage and solubility?
OK - to end the confusion - I was looking at this synth, and I simply substituted acetonitrile for D ... |
4-12-2010 at 11:01
by: zephler |
Reductive amination of ketones with Zn in acetic acid!
this girl I used to date showed me this paper a few weeks ago, as she is researching phrams at the U ... |
3-12-2010 at 22:38
by: zephler |
NBS usage and solubility?
Thanks for the info - upon adding DMSO to the flask (that already had acetonitrile in it and water) ... |
3-12-2010 at 22:13
by: zephler |
NBS usage and solubility?
one more thing I am speculating on, I have reason to suspect that the DMSO that I used had trace amo ... |
3-12-2010 at 22:08
by: zephler |
NBS usage and solubility?
I read in a reference that DCE is sometimes used a solvent - just experimenting |
3-12-2010 at 21:52
by: zephler |
NBS usage and solubility?
and the pinch of the non polar is important that it's only a pinch - to much would cause layer separ ... |
3-12-2010 at 21:15
by: zephler |
NBS usage and solubility?
thanks! I heard that adding a tad of DMSO and a pinch of C2H4Cl2 worked wonderfully  |
3-12-2010 at 21:12
by: zephler |
| [Next Page] |
