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In the crystal structure of the title compound, C22H21N3O2, the packing of the mol­ecules is mainly governed by inter­molecular C—H⋯O hydrogen bonds and π–π inter­actions. [ABSTRACT FROM AUTHOR]

In the title molecule, C18H25N3O2S, the central thienopyrimidine ring system is essentially planar. The cyclohexene ring, in which the four CH2 groups are disordered in an approximately 1:1 ratio, adopts a half-chair conformation, while the morpholine ring is in a standard chair conformation. The butyl group is disordered in an approximately 2:1 ratio. In the crystal structure, weak intermolecular C—H⋯O hydrogen-bonding interactions stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

The tetra­hydro­pyrimidine ring of the title mol­ecule, C11H11FN2OS, adopts a half-chair conformation. In the crystal structure, the mol­ecules are linked to form centrosymmetric hydrogen-bonded dimers. [ABSTRACT FROM AUTHOR]