Methyl 4-(4-fluorophenyl)-6-isopropyl-2-[N-methyl-N-(methylsulfonyl)amino]pyrimidine-5-carboxylate

In the molecule of the title compound, C17H20FN3O4S, the pyrimidine and benzene rings are oriented at a dihedral angle of 35.59 (3)°. Intramolecular C—H⋯N and C—H⋯O hydrogen bonds result in the formation of one five- and two six-membered non-planar rings. One of the six-membered rings adopts a chair conformation, while the other six-membered ring and the five-membered ring exhibit envelope conformations with O and N atoms displaced by 0.837 (3) and 0.152 (3) Å, respectively from the planes of the other ring atoms. In the crystal structure, intermolecular C—H⋯F hydrogen bonds link the molecules into infinite chains.

In the molecule of the title compound, C 17 H 20 FN 3 O 4 S, the pyrimidine and benzene rings are oriented at a dihedral angle of 35.59 (3) . Intramolecular C-HÁ Á ÁN and C-HÁ Á ÁO hydrogen bonds result in the formation of one five-and two six-membered non-planar rings. One of the six-membered rings adopts a chair conformation, while the other sixmembered ring and the five-membered ring exhibit envelope conformations with O and N atoms displaced by 0.837 (3) and 0.152 (3) Å , respectively from the planes of the other ring atoms. In the crystal structure, intermolecular C-HÁ Á ÁF hydrogen bonds link the molecules into infinite chains.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HK2456). supporting information Acta Cryst. (2008). E64, o1126 [doi:10.1107/S1600536808013524] In the molecule of (I), ( In the crystal structure, intermolecular C-H···F hydrogen bonds (Table 1) link the molecules into infinite chains (Fig. 2), in which they may be effective in the stabilization of the structure.
Crystals of (I) suitable for X-ray analysis were obtained by slow evaporation of an ethanol solution.  The molecular structure of the title molecule, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. Hydrogen bonds are shown as dashed lines.

Special details
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > 2sigma(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å 2 )
x y z U iso */U eq S 0.55906 (13)