In the title compound, C(27)H(18)Cl(2)N(2)O(2), the 2-chloro-quinoline and 6-chloro-quinoline rings are almost planar, with maximum deviations from their mean planes of 0.072 (1) and 0.044 (1) Å, respectively, for the Cl atoms. The inter-planar angle between these rings is 14.36 (5)°. The inter-planar angle between the 6-chloro-quinoline and phenyl rings is 66.00 (8)°. In the crystal, mol-ecule...

In the title mol-ecule, C(13)H(15)ClF(2)N(2)O, the piperazine ring is in a chair conformation with the 2,4-difluoro-benzyl and chloro-acetyl substituents in equatorial positions.

The non-H atoms of the title compound, C(10)H(11)ClN(2)O(2), lie nearly on a plane (r.m.s. deviation = 0.150 Å), and the C=N double bond has a Z configuration. In the crystal, adjacent mol-ecules are linked by an N-H⋯O(carbon-yl) hydrogen bond, forming a chain running along [201].

Treatment of 1-(5-bromo-2-chloro-6-methylpyrimidin-4-yl)-1-methylhydrazine with dimethylthiocarbamoylchloride gave 7-chloro-N,N,1,5-tetramethyl-1H-pyrimido[4,5-e][1,3,4]thiadiazin-3-amine in basic acetonitrile. The latter compounds were reacted with secondary amines in boiling ethanol to afford the related 7-amino derivatives.

Treatment of 1-(5-bromo-2-chloro-6-methylpyrimidin-4-yl)-1-methylhydrazine withdimethylthiocarbamoylchloride gave 7-chloro-N,N, 1,5-tetramethyl-1H-pyrimido[4,5-e][1,3,4]thiadiazin-3-amine in basic acetonitrile. The latter compounds were reacted withsecondary amines in boiling ethanol to afford the related 7-amino derivatives.

The non-H atoms of the title compound, C(9)H(8)Cl(2)N(2)O, lie nearly on a plane (r.m.s. deviation = 0.110 Å), and the C=N double bond has a Z configuration. In the crystal, adjacent mol-ecules are linked by an N-H⋯O(carbon-yl) hydrogen bond, forming a chain running along [100].

The title compound, C(12)H(15)ClN(2)O, is a piperazine derivative with the potential for use as a starting material for pharmaceutial and agrochemical applications. The structure is stabilized by C-H⋯O hydrogen bonds, C-H⋯π inter-actions and π-π stacking inter-actions [centroid-centroid distance = is 4.760 (2) Å].