Proba, Zbigniew published the artcileConformation of the dimethylamino group in benzene, pyridine, pyrimidine, and cytosine derivatives. Carbon-13 chemical shift studies of ortho-methyl substitution effects, Synthetic Route of 31401-45-3, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) (1978), 1119-23, database is CAplus.
The 13C NMR spectra of C6H6 derivatives I (R = H, Me), pyrimidines II (RR1 = bond, R2 = H; R3 = H, Me, R4 = NMe2; R3 = NMe2, R4 = H, Me), oxopyrimidines II (R = Me, R1R2 = O, R3 = NMe2, R4 = H, Me) and pyridines III (R = H, Me) are reported. Anal. of the chem. shifts of C-Me and amino N-Me C atoms as well as C-Me and C-NMe2 ring-C atoms showed a progressive twist of the NMe2 group in hindered derivatives from a planar conformation in the 2-oxopyrimidine compounds to the most twisted one in I (R = H).
Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) published new progress about 31401-45-3. 31401-45-3 belongs to pyrimidines, auxiliary class Pyrimidine,Amine, name is N,N-Dimethylpyrimidin-4-amine, and the molecular formula is C6H9N3, Synthetic Route of 31401-45-3.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia