Crystal Structure of Ethyl 2-(2-fluorobenzylidene)-5-(4-fluorophenyl)-7-Methyl-3-Oxo-2,3-Dihydro-5H-1,3-Thiazolo3,2-Apyrimidine-6-Carboxylate

摘要

In the title molecule, C23H18F2N2O3S, the 4-fluoro-substituted and 2-fluoro-substituted benzene rings form dihedral angles of 88.16 (8) and 23.1 (1)°, respectively, with the thiazole ring. The pyrimidine ring adopts a flattened sofa conformation with the sp3-hydridized C atom forming the flap. In the crystal, pairs of weak C—H...O hydrogen bonds link molecules related by twofold rotation axes, forming R22(10) rings, which are in turn linked by weak C—H...N interactions to form chains of rings along [010]. In addition, weak C—H...π(arene) interactions link the chains into layers parallel to (001) and π-π interactions with a centroid-centroid distance of 3.836 (10) Å connect these layers into a three-dimensional network.