Barbieri, Giorgio published the artcileInternal rotation of the NN-dimethylamino-group in aromatic and heteroaromatic systems, Category: pyrimidines, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999) (1979), 330-6, database is CAplus.
The title rotation was examined by comparing thermodn. activation parameters obtained exptl. with energy differences between ground and transition state evaluated by semiempirical MO calculations and describing the mol. electronic characteristics which determine the barriers to rotation. The rotational behavior in the N-protonated and N-alkylated forms relative to the free base of some (dimethylamino)pyridines was also examined Semiempirical calculations were used to predict the activation parameters and to describe the rotational path in these systems.
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, Category: pyrimidines.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia