Do you mean N,N-dimethylamino-p-acetophenone?
For synthesis from p-aminoacetophenone see:
32. Szylhabel-Godala, A., S. Madhavan, J. Rudzinski, M. H. O’Leary and
P. Paneth (1996) Nitrogen and deuterium kinetic isotope effects on the
Menshutkin reaction. J. Phys. Org. Chem. 9, 35–40.