
%0 Journal Article
%A Cowden, W 
%A Jacobsen, NW 
%T Pyrimidine N-oxides. IV. The N,N'-dihydroxy derivatives of phenobarbital and veronal
%J Australian Journal of Chemistry
%D 1982/04/01
%V 35
%N 4
%P 795-797
%K 
%R https://doi.org/10.1071/CH9820795
%U https://www.publish.csiro.au/paper/CH9820795 
%X 5-Ethyl-1,3-dihydroxy-5-phenylbarbituric acid (N,N'-dihydroxyphenobarbital) and 5,5-diethyl-1,3-dihydroxybarbituric acid (N,N'-dihydroxyveronal) have been prepared by the condensation of 1,3-dibenzyloxyurea with ethylphenylmalonyl dichloride and diethylmalonyl dichloride respectively, followed by the removal of the benzyl protecting groups from the intermediate dibenzyloxy derivatives. 
