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In the title compound, C 18 H 15 N 3 O 3 ·0.5CH 2 Cl 2 , the fused ring benzofuro[2,3- d ]pyrimidine system is essentially planar [maximum deviation 0.029 (1) Å]. The planes of the pyrimidinone and phenyl rings are nearly perpendicular [dihedral angle = 87.50 (14)°]. The packing of the mol­ecules in the crystal structure is governed mainly by inter­molecular O—H⋯O and N—H⋯O hydrogen-bonding inter­actions and inter­molecular π–π inter­actions between benzofuro[3,2- d ]pyrimidine units [the interplanar distances are  ca  3.4 and 3.5 Å, and the distances between adjacent ring centroids are in the range 3.64 (1)–3.76 (1) Å]. The dichloromethane solvent molecule lies on a special position.

2-(2-Hydroxyethylamino)-3-phenyl-1-benzofuro[3,2-d]pyrimidin-4(3H)-one dichloromethane hemisolvate