Although guanidine and many monosubstituted guanidines may be nitrated at the primary amido group, no di- or trisubstituted nitroguanidine has heretofore been prepared. Thus the nitro deriva- tives of sym. dimethyl, trimethyl or triethylguani- dine, and also of N-alkyl-”-nitro- ... \C=O +------ (CHZ). / 'CHZ--N \cIIz--K ... 1,3-dinitroimidazolidone, IV (n = 0), is produced hexene, I (n = l), and 2-nitramino- A2-1,3-diaza- ... (1) T. L. Davis and R. C. Elderfield, ...
