1,1′,3,3′,5,5′-Hexamethyl-spiro-[furo[2,3-d] pyrimidine-6(5H),5′-pyrimidine]-2,2′,4,4′,6′(1H,3H, 1′H,3′H,5′H)-penta-one

Abstract

In the title mol-ecule, C15H18N4O 6, the fused 2,3-dihydro-furan ring has an envelope conformation and the spiro pyrimidine ring has a half-chair conformation. In the crystal, short inter-molecular O⋯C contacts of 2.835 (4) and 2.868 (4) Å between the carbonyl groups indicate the existence of electrostatic inter-actions, which link the mol-ecules into corrugated sheets parallel to the ab plane.