3,3′-(1,4-Phenylene)bis[2-(propylamino)benzofuro[3,2-d]pyrimidin-4(3H)-one] ethanol disolvate

The title compound, C32H28N6O4·2C2H5OH, consists of two 2-(propylamino)benzofuro[3,2-d]pyrimidin-4(3H)-one units connected, via one of the pyrimidine N atoms, to a bridging benzene ring in the 1,4 positions. Two ethanol solvent molecules are also present. The main molecule lies on a center of symmetry located at the center of the benzene ring. The fused-ring system of the benzofuro[3,2-d]pyrimidine moiety is nearly planar (r.m.s. deviation = 0.016 Å) and forms a dihedral angle of 78.21 (7)° with the central benzene ring. The crystal structure features O—H⋯O and N—H⋯O interactions. The C atoms of the propylamino side chain in the main molecule and the ethyl group in the solvent molecule are disordered over two positions, with site-occupancy factors 0.34:0.66 and 0.42:0.58, respectively.

The title compound, C 32 H 28 N 6 O 4 Á2C 2 H 5 OH, consists of two 2-(propylamino)benzofuro[3,2-d]pyrimidin-4(3H)-one units connected, via one of the pyrimidine N atoms, to a bridging benzene ring in the 1,4 positions. Two ethanol solvent molecules are also present. The main molecule lies on a center of symmetry located at the center of the benzene ring. The fused-ring system of the benzofuro[3,2-d]pyrimidine moiety is nearly planar (r.m.s. deviation = 0.016 Å ) and forms a dihedral angle of 78.21 (7) with the central benzene ring. The crystal structure features O-HÁ Á ÁO and N-HÁ Á ÁO interactions. The C atoms of the propylamino side chain in the main molecule and the ethyl group in the solvent molecule are disordered over two positions, with site-occupancy factors 0.34:0.66 and 0.42:0.58, respectively.

Experimental
The compound was synthesized according to the procedures previously described in the literature (Hu et al., 2005(Hu et al., , 2006(Hu et al., , 2007(Hu et al., , 2008.

Refinement
All H-atoms were positioned with idealized geometry and refined isotropic (U iso (H)= 1.5U eq (C)for methyl H atoms and

Special details
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å 2 )
x y z U iso */U eq Occ. (