HMTD master
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Location: Brisbane, QLD, Australia
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DNPA
I was looking through my wonderful chemical closet, and I have got all the ingredients to make DNPA (DNPA is the acronym for 4,4-dinitropimelic acid,
another name is 4,4-dinitro-1,7-heptanedioic acid) does anyone have any experiance with this compound? any help/suggestions are welcomed.
all I could find about it was http://roguesci.org/megalomania/explo/DNPA.html but I hav heard of it in other places.
Bryan
\"Look Ma, No Brains!\"
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Krypton
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It`s a wonderful waste preparing DNPA
by this method over many steps with the
mono-potassium salt of trinitroethanol !!!
In convention with my ancestor.
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fluffy bunny
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Sorry this post isn't very helpful, i don't know anything about the synthesis of DNPA, but how did you find potassium dinitroethanol?
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HMTD master
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potassium dinitroethanol
It's in a very old looking bottle
I think it came from my old school labs (along with half my pyrex) That probalbly doesn't help.
\"Look Ma, No Brains!\"
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Madog
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lol
that must be tough to make. doesnt ethyl nitrate decompose from water or something like that?
Most people outgrow their pyro tendencies, we are the ones who\'s tendencies outgrew us.
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Krypton
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Potassium dinitroethanol, the potassium salt
(NO2)2=CK-CH2-OH
of trinitroethanol
(NO2)3C-CH2-OH
I think there is something sloping between the electron
bonds (NO2) of the formula and the drawing !?!
http://roguesci.org/megalomania/explo/DNPA.gif
[ -C- --- NO2 <<< NO2 ] ; C7H10N2O8 ?
---> C7H12N2O8
In convention with my ancestor.
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Krypton
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appendix to my last post
This is actually not the right product 
to the post but a tetranitrate of
ethanol can exist.
1-nitroxy-2,2,2-trinitroethane
(NO2)3C-CH2-ONO2
or a synthesis with p-dioxane to
4,4-dinitropimelyl chloride
[C10H12N4O12]
I think you should deactivating the
vbs scrips in the browser when
visiting roguesci.org 
In convention with my ancestor.
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PHILOU Zrealone
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Why bother with DNPA when you have DNEthanol?
K DNEthanol --> trinitropyridine N-oxyde by a complexe trimerisation reaction.
(O2N)2CH-CH2OH has two (three in reality) acidic protons!
The H of the C is in equilibrium with the HO-N(O)=C aciform.And against all thinking the H of the alcohol has an increased acidity because of the two
strong elecron withdrawing nitrogroups in alfa position to the -OH!
If we think intelligently to the problem:
(O2N)2CH-CH2OH + CH2=O --> HOCH2-C(NO2)2-CH2OH
Formol addition to the H of a primary carbon holding a nitro (or more).
We thus have 2,2 dinitropropandiol what allow one to make the extremely powerful and dense O2NO-CH2-C(NO2)2-CH2-ONO2 (maybe cristalline) and
displaying a positive OB --> plasticiser or additive superfuel possible!
(O2N-)2C(-CH2OH)2 + 2HCl + ZnCl2 --> (O2N-)2C(-CH2Cl)2 + 2H2O
(Gringnard reagents offer a lot of ways to DNPA but there are other ways)
(O2N-)2C(-CH2Cl)2 +2NaCN --> (O2N-)2C(-CH2-CN)2 + 2 NaCl
(O2N-)2C(-CH2-CN)2 +H2O/H(+)/heat --> (O2N-)2C(-CH2-CO2NH4)2 (dinitropentandioique acid!)
(O2N-)2C(-CH2-Cl)2 + 2Me-O-CO-CH2-CO-OMe -MeONa-> (O2N-)2C(-CH2-CH2-CO2H)2 + 4MeOH + 2CO2 + 2NaCl.+ (O2N-)2C(-CH2-CH2-)2CH-CO2H (as a side product)
Dimetlyl malonic ester synthesis makes wonders!
PH Z (PHILOU Zrealone)
"Physic is all what never works; Chemistry is all what stinks and explodes!"-"Life that deadly disease, sexually transmitted."(W.Allen)
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