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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, C12H14N2OS, adopts a half-chair conformation. In the crystal structure, the mol­ecules are linked to form centrosymmetric­ally related hydrogen-bonded dimers. [ABSTRACT FROM AUTHOR]

The article presents information related to the organic compound 3-(2-Chlorobenzyl)-2-thioxoperhydro-pyrimidin-4-one. The tetrahydropyrimidine ring of the compound adopts a half-chair conformation. The derivatives of uracil and thiouracil are known for their varied bioactivity. Lenacil, bromacil, butafenacil, flupropacil, isocil and terbacil are widely used as herbicides. Some of them possess antidiabetic activity. This led researchers to pay more attention to the synthesis and structure determination of these compounds.

The title compound, C11H9ClN2O2, crystallizes with weak inter­molecular N—H⋯O hydrogen-bond inter­actions. The dihedral angle between the pyrimidine and benzene rings is 86.82 (7)°. [ABSTRACT FROM AUTHOR]