Mw. Khan et Ng. Kundu, An expeditious synthesis of 4-acyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidines(6-acyl uracils) and 4-acyl-6-aryl-2-oxo-2,3-dihydropyrimidines, J CHEM R-S, (1), 1999, pp. 20
A facile synthesis of 4-acyl-2,6-dioxo-1,2,3,6-tetrahydropyrimidines (6-acy
l uracils) and 4-acyl-6-aryl-2-oxo-2,3-dihydropyrimidines is described wher
e the Friedel-Crafts reaction on 2,6-dichloropyrimidine-4-carbonyl chloride
plays a crucial role.