A number of 1-aryl-4-methyl-1-penten-3-ones 1 were converted to the corresponding Mannich bases 2 and analogues 3. Attempts to form the azines 4 from several members in series 1 led to the isolation of the corresponding pyrazolines 5 or aryl aldehyde azines 6. Replacement of the isopropyl group of a compound in series 1 by methyl and ethyl functions led to ketones that reacted with hydrazine producing the corresponding azines. The ...