2-Diisopropyl­amino-3-phenyl­benzo[4,5]furo[3,2-d]pyrimidin-4(3H)-one

In the title compound, C₂₂H₂₃N₃O₂, the three fused rings of the benzofuro[3,2-d]pyrimidine system are almost coplanar. The packing of the mol­ecules in the crystal structure is mainly due to π–π and inter­molecular C—H...O hydrogen-bonding inter­actions.

5,6-Dianilino-3-(4-chloro­phen­yl)-3,6-dihydro-1,2,3-triazolo[4,5-d]pyrimidin-7-one

In the title compound, C₂₂H₁₆ClN₇O, all ring atoms in the triazolopyrimidinone system are almost coplanar. The packing of the mol­ecules in the crystal structure is mainly a result of π–π and N—H...N/O hydrogen-bonding inter­actions, forming a three-dimensional network.

3-(4-Chloro­phen­yl)-5-methyl-2-propyl­amino-8,9,10,11-tetra­hydro-2-benzothieno­[2′,3′;2,3]­pyrido[4,5-d]pyrimidin-4(3H)-one

The asymmetric unit of the title compound, C₂₃H₂₃ClN₄OS, contains two crystallographically independent mol­ecules in which the orientations of the propyl­amine group and chloro­phenyl rings with respect to the fused ring system are different. The terminal cyclo­hexene ring adopts a half-chair conformation. The crystal packing is stabilized by N—H...O, N—H...N and C—H...O hydrogen bonds and π–π inter­actions.

8-(4-Chloro­phen­oxy)-7-(4-chloro­phen­yl)-1,2,5-trimethylthieno[2',3';2,3]pyrido[4,5-d]pyrimidin-6(7H)-one

In the mol­ecule of the title compound, C₂₄H₁₇Cl₂N₃O₂S, the mean plane of the tricyclic thienopyridopyrimidine system is roughly orthogonal to both benzene planes, the dihedral angles being 107.8 (1) and 99.6 (1)° for the benzene planes in the p-chloro­phen­oxy and p-chloro­phenyl groups, respectively. The dihedral angle formed by the two benzene rings is 101.4 (1)°.

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

In the title compound, C₂₃H₁₆N₂O₄, the mol­ecules form a supramolecular structure via inter­molecular C—H...O hydrogen bonds and inter­molecular π–π inter­actions.

8-Butyl­amino-1,2,5-trimethyl-7-p-tolyl-3-thia-4,7,9-triaza­cyclo­penta­[a]naphthalen-6(7H)-one

In the title compound, C₂₃H₂₆N₄OS, the fused tricyclic system is essentially planar. The crystal stacking is mainly due to π–π inter­actions and inter­molecular N—H...O hydrogen-bond inter­actions.

2-(4-Chloro-3-methyl­phen­oxy)-3-(4-chloro­phen­yl)-5-methyl-8,9,10,11-tetra­hydro-1-benzothieno[2',3':2,3]pyrido[4,3-d]pyrimidin-4(3H)-one dichloromethane solvate

In the structure of the title compound, C₂₇H₂₁Cl₂N₃O₂S·CH₂Cl₂, the C-S bond lengths in the thio­phene ring [1.744 (5) and 1.745 (5) Å] are equivalent and long compared with the values observed in both free thio­phene, measured using electron diffraction, and thieno[2,3-c]pyridine. The central thieno­pyridine ring system is nearly planar and the dihedral angle between the thiophene and pyridine planes is 0.9 (1)°.

3-(2-Amino­phen­yl)-2-methyl­sulfanyl-5,6,7,8-tetra­hydro­benzothieno[2,3-d]pyrimidin-4(3H)-one

In the title compound, C₁₇H₁₇N₃OS₂, the fused thio­phene and pyrimidine rings are almost coplanar. The amino group is involved in both intra­molecular and inter­molecular hydrogen bonds, the latter linking the mol­ecules into a centrosymmetric dimer.

3-Isopropyl-2-propoxy-5,6,7,8-tetra­hydro-1-benzothieno[2,3-d]pyrimidin-4(3H)-one

In the title compound, C₁₆H₂₂N₂O₂S, the fused thio­phene and pyrimidine rings are almost coplanar. The packing of the mol­ecules in the crystal structure is mainly due to inter­molecular C—H...O hydrogen-bonding inter­actions, resulting in the formation of a zigzag chain.