I think, it will be difficult to separate these both compounds with
water, because diethylmalonate is slightly soluble in water. But I think
( I do not know it), that the other compound is much more soluble in
water. In case you do not need the whole amount of diethylmalonate, you
could try to remove the second compound. Perhaps, a better method will
be, to find a nonpolar solvent, in which diethylmalonate is soluble,
whereas the second compound is not soluble. According to the Handbook,
diethylmalonate is soluble in chloroform - I do not know, if it is
soluble in hexane. Perhaps you can try, if it is.

Cornelia
__________________

ORGLIST - Organic Chemistry Mailing List
Website and Archive: http://www.orglist.net/
List coordinator: Joao Aires de Sousa (jas@mail.fct.unl.pt)