organic compounds
N-(2-Fluorophenyl)-5-[(4-methoxyphenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine
aDepartment of Organic Chemistry, Medical Academy, 9 Grodzka St, 50-137 Wrocław, Poland, bFaculty of Chemistry, University of Wrocław, 14 Joliot-Curie St, 50-383 Wrocław, Poland, and cDepartment of Bioorganic Chemistry, Faculty of Engineering and Economics, Wrocław University of Economics, 118/120 Komandorska St, 53-345 Wrocław, Poland
*Correspondence e-mail: isai@o2.pl
The conformation of the title molecule, C25H23FN4O, is mainly determined by an intramolecular N—H⋯N hydrogen bond closing a six-membered ring and the dihedral angles between the pyrimidine ring and the three benzene rings which are 12.8 (2), 12.0 (2) and 86.1 (2)°. An intramolecular N—H⋯F interaction also occurs. The crystal stucture is stabilized by weak C—H⋯O and C—H⋯π interactions. An intermolecular N—H⋯N interaction is also observed.
Related literature
For antibacterial activity of 6-methyl-2-phenyl-5-substituted pyrimidine derivatives, see: Cieplik et al. (1995, 2003, 2008); Pluta et al. (1996). For related structures, see: Cieplik et al. (2006).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: CrysAlis CCD (Oxford Diffraction, 2007); cell CrysAlis RED (Oxford Diffraction, 2007); data reduction: CrysAlis RED; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536811045028/gk2418sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811045028/gk2418Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811045028/gk2418Isup3.cml
The title compound was obtained by adopting the procedure described previously by Cieplik et al. (2003). 4 g (0.0122 mmol) of 5-(chloromethyl)-N-(2-fluorophenyl)-6-methyl-2-phenylpyrimidin-4-amine was dissolved in 50 ml of chloroform, and 2 g of 4-methoxyaniline was added. The reaction mixture was refluxed for 6 h with vigorous stirring, then was cooled and poured into 100 ml of water. The aqueous solution was extracted three times with chloroform (50 ml). The combined chloroform phases were dried over MgSO4, filtered and concentrated under vacuum. The oily residue was purified by
on silica gel (200–400 mesh) using CHCl3 as the and by crystallization from methanol to give single crystals (yield: 78.5%, m.p. 157–158 °C).The N-bonded H atoms were found from difference Fourier maps and refined with Uiso(H)=1.2Ueq(N). The remaining H atoms were treated as riding on their carrier atoms, with C—H distances in the range 0.95–0.99 Å, and refined with Uiso(H)=1.2Ueq(C) except methyl groups where Uiso(H)=1.5 Ueq(C).
Pyrimidines are very important molecules in biology and have many applications in the areas of pharmaceuticals. 6-Methyl-2-phenyl-4-thio-5-pyrimidine carboxylic acid is a key intermediate for our synthesis of a wide range of various 6-methyl-2-phenyl-5-substituted pyrimidine derivatives (Cieplik et al., 1995, 2003, 2008; Pluta et al., 1996). Microbiological testing of a number of such pyrimidine derivatives, designed and synthesized as immunomodulating agents, showed them to possess antibacterial and antifungal activity (Cieplik et al., 1995, 2003). In connection with these studies, we have described the structures of two polymorphic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine (Cieplik et al., 2006). Now, we have prepared a new compound of this class of derivatives, namely N-(2-fluorophenyl)-5-[(4-methoxyphenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine and present its structure here. In the crystal, the orientation of the amine groups with respect to each other results from intramolecular N—H···N hydrogen bond between N4—H4 and N5, which closes six-membered ring. Conformation of the title molecule is best defined by the dihedral angles formed between the pyrimidine ring plane and the planes of the phenyl group attached to C2 and the benzene rings of the (2-fluorophenyl)amino or (4-methoxyphenyl)aminomethyl groups, attached to C4 or C5 of the pyrimidine ring. These dihedral angles are 12.8 (2)°, 12.0 (2)° and 86.1 (2)°, respectively. The twist of 12.8 (2)° of the phenyl group is similar to that found in the polymorphic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine [5.2 (2)° and 6.4 (2)°; Cieplik et al., 2006]. Additionally, the aromatic atom C41 of the (2-fluorophenyl)amino group is nearly coplanar with the pyrimidine ring. The C51 atom of (4-methoxyphenyl)aminomethyl group deviates from the pyrimidine ring plane by -1.01 (1) Å.
Contrary to polymorhic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine (Cieplik et al., 2006), the amine atom N5 does not participate in hydrogen bonding. The π hydrogen bonds. In the crystal, the molecules are linked by C—H···O hydrogen bonds involving the methyl group C61 as a donor and O5 atom (x, -y + 1, z - 1/2) of the methoxy group as an acceptor. This interaction links the molecules into polymeric chains parallel to the c axis (Fig. 2). These chains are further linked by C—H···π interactions. The methyl group C61 acts as a donor to the fluorinated aryl ring C41—C46 (symmetry code: -x + 1/2, -y + 3/2, -z + 1) and also to the pirymidine ring (-x + 1/2, -y + 1/2, -z + 1). Additionally, the C53—H53 group acts as a donor of C—H···π(arene) interaction to the benzene ring C21—C26 (-x + 1/2, -y + 3/2, -z + 1). Combination of these interactions leads to layers of molecules parallel to the bc plane (Fig. 3).
of title compound is stabilized by weak C—H···O and C—H···For antibacterial activity of 6-methyl-2-phenyl-5-substituted pyrimidine derivatives, see: Cieplik et al. (1995, 2003, 2008); Pluta et al. (1996). For related structures, see: Cieplik et al. (2006).
Data collection: CrysAlis CCD (Oxford Diffraction, 2007); cell
CrysAlis RED (Oxford Diffraction, 2007); data reduction: CrysAlis RED (Oxford Diffraction, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. Molecular structure of the title compound with displacement ellipsoids drawn at the 50% probability level and H atoms shown as small spheres of arbitrary radii. The dotted line indicates an intramolecular N—H···N hydrogen bond. | |
Fig. 2. Part of the crystal structure viewed down the b axis showing the chain formed via C—H···O hydrogen bonds. Dotted and dashed lines indicate intra- and intermolecular hydrogen bonds, respectively. H atoms not involved in hydrogen bonding have been omitted for clarity. | |
Fig. 3. A packing diagram of title compound, showing C—H···π interactions. Intermolecular C—H···O interactions are shown with dashed lines, C—H···π interactions with double dashed lines and intramolecular N—H···N interactions with dotted lines. H atoms not involved in hydrogen bonding have been omitted for clarity. |
C25H23FN4O | F(000) = 1744 |
Mr = 414.47 | Dx = 1.339 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 14660 reflections |
a = 27.075 (11) Å | θ = 4.2–38.5° |
b = 8.922 (4) Å | µ = 0.09 mm−1 |
c = 22.983 (10) Å | T = 85 K |
β = 132.22 (5)° | Block, light yellow |
V = 4112 (3) Å3 | 0.53 × 0.17 × 0.14 mm |
Z = 8 |
Oxford Diffraction Xcalibur PX κ-geometry diffractometer | 7196 reflections with I > 2σ(I) |
Radiation source: normal-focus sealed tube | Rint = 0.025 |
Graphite monochromator | θmax = 38.5°, θmin = 4.2° |
φ and ω scans | h = −46→40 |
28521 measured reflections | k = −12→15 |
10469 independent reflections | l = −35→39 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.121 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.070P)2] where P = (Fo2 + 2Fc2)/3 |
10469 reflections | (Δ/σ)max = 0.001 |
288 parameters | Δρmax = 0.61 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C25H23FN4O | V = 4112 (3) Å3 |
Mr = 414.47 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 27.075 (11) Å | µ = 0.09 mm−1 |
b = 8.922 (4) Å | T = 85 K |
c = 22.983 (10) Å | 0.53 × 0.17 × 0.14 mm |
β = 132.22 (5)° |
Oxford Diffraction Xcalibur PX κ-geometry diffractometer | 7196 reflections with I > 2σ(I) |
28521 measured reflections | Rint = 0.025 |
10469 independent reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.121 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.61 e Å−3 |
10469 reflections | Δρmin = −0.22 e Å−3 |
288 parameters |
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 F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
N1 | 0.23426 (3) | 0.36669 (7) | 0.40998 (3) | 0.01317 (11) | |
C2 | 0.17473 (4) | 0.43335 (8) | 0.36504 (4) | 0.01210 (12) | |
C21 | 0.12462 (4) | 0.39073 (8) | 0.28059 (4) | 0.01287 (12) | |
C22 | 0.14297 (4) | 0.30769 (8) | 0.24607 (4) | 0.01447 (13) | |
H22 | 0.1884 | 0.2809 | 0.2763 | 0.017* | |
C23 | 0.09517 (4) | 0.26420 (9) | 0.16781 (4) | 0.01767 (14) | |
H23 | 0.1081 | 0.2075 | 0.1449 | 0.021* | |
C24 | 0.02852 (4) | 0.30321 (9) | 0.12281 (5) | 0.02034 (16) | |
H24 | −0.0041 | 0.2721 | 0.0695 | 0.024* | |
C25 | 0.00996 (4) | 0.38787 (10) | 0.15623 (5) | 0.02228 (16) | |
H25 | −0.0354 | 0.4157 | 0.1256 | 0.027* | |
C26 | 0.05782 (4) | 0.43180 (10) | 0.23455 (4) | 0.01855 (14) | |
H26 | 0.0449 | 0.4904 | 0.2570 | 0.022* | |
N3 | 0.15437 (3) | 0.53341 (7) | 0.38901 (3) | 0.01317 (11) | |
C4 | 0.19708 (4) | 0.56283 (8) | 0.46609 (4) | 0.01252 (12) | |
N4 | 0.17917 (3) | 0.66198 (7) | 0.49490 (4) | 0.01472 (12) | |
H4 | 0.2030 (5) | 0.6531 (12) | 0.5456 (6) | 0.018* | |
C41 | 0.11961 (4) | 0.74116 (8) | 0.45602 (4) | 0.01369 (12) | |
C42 | 0.11209 (4) | 0.81165 (8) | 0.50421 (4) | 0.01637 (14) | |
F4 | 0.16300 (3) | 0.79604 (6) | 0.58317 (3) | 0.02284 (11) | |
C43 | 0.05679 (4) | 0.89387 (9) | 0.47602 (5) | 0.02065 (15) | |
H43 | 0.0539 | 0.9390 | 0.5111 | 0.025* | |
C44 | 0.00524 (4) | 0.90943 (10) | 0.39507 (5) | 0.02180 (16) | |
H44 | −0.0338 | 0.9642 | 0.3740 | 0.026* | |
C45 | 0.01153 (4) | 0.84392 (10) | 0.34542 (5) | 0.02132 (16) | |
H45 | −0.0233 | 0.8563 | 0.2902 | 0.026* | |
C46 | 0.06771 (4) | 0.76038 (9) | 0.37476 (4) | 0.01719 (14) | |
H46 | 0.0708 | 0.7165 | 0.3396 | 0.021* | |
C5 | 0.26157 (4) | 0.49669 (8) | 0.52009 (4) | 0.01261 (12) | |
C57 | 0.30861 (4) | 0.53792 (9) | 0.60615 (4) | 0.01576 (13) | |
H571 | 0.3492 | 0.4750 | 0.6358 | 0.019* | |
H572 | 0.3223 | 0.6440 | 0.6127 | 0.019* | |
N5 | 0.27693 (3) | 0.51636 (7) | 0.63795 (4) | 0.01484 (12) | |
H5 | 0.2652 (5) | 0.4199 (13) | 0.6350 (6) | 0.018* | |
C51 | 0.30334 (4) | 0.58811 (8) | 0.70885 (4) | 0.01285 (12) | |
C52 | 0.33894 (4) | 0.72198 (8) | 0.73410 (4) | 0.01505 (13) | |
H52 | 0.3495 | 0.7634 | 0.7055 | 0.018* | |
C53 | 0.35944 (4) | 0.79668 (8) | 0.80092 (4) | 0.01564 (13) | |
H53 | 0.3834 | 0.8882 | 0.8171 | 0.019* | |
C54 | 0.34466 (4) | 0.73683 (8) | 0.84340 (4) | 0.01471 (13) | |
O5 | 0.36179 (3) | 0.80239 (6) | 0.90928 (3) | 0.02145 (13) | |
C58 | 0.39084 (5) | 0.94760 (9) | 0.92941 (5) | 0.02204 (16) | |
H581 | 0.4332 | 0.9422 | 0.9417 | 0.033* | |
H582 | 0.3990 | 0.9848 | 0.9753 | 0.033* | |
H583 | 0.3604 | 1.0159 | 0.8850 | 0.033* | |
C55 | 0.30912 (4) | 0.60230 (8) | 0.81897 (4) | 0.01540 (13) | |
H55 | 0.2988 | 0.5610 | 0.8478 | 0.018* | |
C56 | 0.28893 (4) | 0.52895 (8) | 0.75279 (4) | 0.01431 (13) | |
H56 | 0.2650 | 0.4374 | 0.7369 | 0.017* | |
C6 | 0.27830 (4) | 0.40137 (8) | 0.48783 (4) | 0.01261 (12) | |
C61 | 0.34603 (4) | 0.33005 (9) | 0.53604 (4) | 0.01562 (13) | |
H611 | 0.3474 | 0.2675 | 0.5021 | 0.023* | |
H612 | 0.3547 | 0.2678 | 0.5772 | 0.023* | |
H613 | 0.3801 | 0.4084 | 0.5602 | 0.023* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0143 (3) | 0.0145 (3) | 0.0130 (2) | 0.0007 (2) | 0.0101 (2) | 0.00032 (19) |
C2 | 0.0143 (3) | 0.0121 (3) | 0.0127 (3) | 0.0001 (2) | 0.0103 (2) | 0.0006 (2) |
C21 | 0.0147 (3) | 0.0129 (3) | 0.0128 (3) | −0.0003 (2) | 0.0100 (2) | 0.0001 (2) |
C22 | 0.0167 (3) | 0.0139 (3) | 0.0142 (3) | 0.0011 (2) | 0.0110 (3) | −0.0002 (2) |
C23 | 0.0225 (4) | 0.0154 (3) | 0.0152 (3) | 0.0009 (3) | 0.0127 (3) | −0.0015 (2) |
C24 | 0.0219 (4) | 0.0185 (3) | 0.0149 (3) | −0.0009 (3) | 0.0101 (3) | −0.0025 (3) |
C25 | 0.0154 (3) | 0.0271 (4) | 0.0175 (3) | 0.0011 (3) | 0.0082 (3) | −0.0034 (3) |
C26 | 0.0158 (3) | 0.0227 (4) | 0.0172 (3) | 0.0004 (3) | 0.0111 (3) | −0.0031 (3) |
N3 | 0.0159 (3) | 0.0133 (3) | 0.0130 (2) | 0.0015 (2) | 0.0108 (2) | 0.00088 (19) |
C4 | 0.0158 (3) | 0.0115 (3) | 0.0136 (3) | 0.0006 (2) | 0.0112 (2) | 0.0008 (2) |
N4 | 0.0171 (3) | 0.0160 (3) | 0.0125 (2) | 0.0041 (2) | 0.0105 (2) | 0.0012 (2) |
C41 | 0.0165 (3) | 0.0115 (3) | 0.0168 (3) | 0.0010 (2) | 0.0127 (3) | 0.0006 (2) |
C42 | 0.0215 (3) | 0.0143 (3) | 0.0186 (3) | 0.0011 (3) | 0.0156 (3) | 0.0005 (2) |
F4 | 0.0304 (3) | 0.0232 (3) | 0.0176 (2) | 0.0073 (2) | 0.0172 (2) | 0.00160 (18) |
C43 | 0.0261 (4) | 0.0173 (3) | 0.0278 (4) | 0.0026 (3) | 0.0219 (3) | −0.0006 (3) |
C44 | 0.0181 (3) | 0.0187 (4) | 0.0292 (4) | 0.0020 (3) | 0.0162 (3) | −0.0018 (3) |
C45 | 0.0167 (3) | 0.0206 (4) | 0.0214 (3) | 0.0021 (3) | 0.0106 (3) | −0.0014 (3) |
C46 | 0.0166 (3) | 0.0177 (3) | 0.0170 (3) | 0.0017 (3) | 0.0112 (3) | −0.0008 (2) |
C5 | 0.0141 (3) | 0.0130 (3) | 0.0123 (3) | −0.0001 (2) | 0.0094 (2) | 0.0003 (2) |
C57 | 0.0149 (3) | 0.0204 (3) | 0.0134 (3) | −0.0007 (3) | 0.0100 (3) | −0.0023 (2) |
N5 | 0.0194 (3) | 0.0149 (3) | 0.0129 (2) | −0.0030 (2) | 0.0120 (2) | −0.0010 (2) |
C51 | 0.0133 (3) | 0.0143 (3) | 0.0114 (3) | 0.0012 (2) | 0.0085 (2) | 0.0012 (2) |
C52 | 0.0196 (3) | 0.0153 (3) | 0.0144 (3) | −0.0015 (3) | 0.0131 (3) | 0.0006 (2) |
C53 | 0.0201 (3) | 0.0143 (3) | 0.0156 (3) | −0.0019 (3) | 0.0132 (3) | −0.0004 (2) |
C54 | 0.0194 (3) | 0.0143 (3) | 0.0143 (3) | 0.0017 (2) | 0.0129 (3) | 0.0012 (2) |
O5 | 0.0370 (3) | 0.0165 (3) | 0.0200 (3) | −0.0041 (2) | 0.0229 (3) | −0.0029 (2) |
C58 | 0.0306 (4) | 0.0176 (4) | 0.0187 (3) | −0.0027 (3) | 0.0169 (3) | −0.0031 (3) |
C55 | 0.0204 (3) | 0.0145 (3) | 0.0173 (3) | 0.0018 (3) | 0.0151 (3) | 0.0025 (2) |
C56 | 0.0165 (3) | 0.0138 (3) | 0.0163 (3) | −0.0007 (2) | 0.0125 (3) | 0.0009 (2) |
C6 | 0.0142 (3) | 0.0128 (3) | 0.0134 (3) | 0.0001 (2) | 0.0103 (2) | 0.0010 (2) |
C61 | 0.0153 (3) | 0.0176 (3) | 0.0154 (3) | 0.0025 (3) | 0.0109 (3) | 0.0014 (2) |
N1—C2 | 1.3345 (13) | C45—H45 | 0.9500 |
N1—C6 | 1.3607 (15) | C46—H46 | 0.9500 |
C2—N3 | 1.3461 (10) | C5—C6 | 1.3890 (11) |
C2—C21 | 1.4878 (16) | C5—C57 | 1.5112 (16) |
C21—C26 | 1.3974 (15) | C57—N5 | 1.4661 (11) |
C21—C22 | 1.3984 (11) | C57—H571 | 0.9900 |
C22—C23 | 1.3899 (16) | C57—H572 | 0.9900 |
C22—H22 | 0.9500 | N5—C51 | 1.4178 (12) |
C23—C24 | 1.3925 (16) | N5—H5 | 0.904 (11) |
C23—H23 | 0.9500 | C51—C52 | 1.3931 (12) |
C24—C25 | 1.3900 (13) | C51—C56 | 1.4073 (11) |
C24—H24 | 0.9500 | C52—C53 | 1.4019 (12) |
C25—C26 | 1.3921 (16) | C52—H52 | 0.9500 |
C25—H25 | 0.9500 | C53—C54 | 1.3868 (11) |
C26—H26 | 0.9500 | C53—H53 | 0.9500 |
N3—C4 | 1.3384 (14) | C54—O5 | 1.3807 (11) |
C4—N4 | 1.3739 (10) | C54—C55 | 1.3985 (12) |
C4—C5 | 1.4230 (15) | O5—C58 | 1.4220 (12) |
N4—C41 | 1.4004 (13) | C58—H581 | 0.9800 |
N4—H4 | 0.879 (11) | C58—H582 | 0.9800 |
C41—C46 | 1.4018 (17) | C58—H583 | 0.9800 |
C41—C42 | 1.4024 (11) | C55—C56 | 1.3867 (12) |
C42—F4 | 1.3605 (16) | C55—H55 | 0.9500 |
C42—C43 | 1.3770 (13) | C56—H56 | 0.9500 |
C43—C44 | 1.3924 (18) | C6—C61 | 1.5050 (15) |
C43—H43 | 0.9500 | C61—H611 | 0.9800 |
C44—C45 | 1.3905 (13) | C61—H612 | 0.9800 |
C44—H44 | 0.9500 | C61—H613 | 0.9800 |
C45—C46 | 1.3948 (13) | ||
C2—N1—C6 | 116.86 (8) | C6—C5—C4 | 115.94 (8) |
N1—C2—N3 | 126.33 (7) | C6—C5—C57 | 123.87 (7) |
N1—C2—C21 | 117.65 (8) | C4—C5—C57 | 120.10 (8) |
N3—C2—C21 | 115.98 (7) | N5—C57—C5 | 111.08 (8) |
C26—C21—C22 | 118.80 (8) | N5—C57—H571 | 109.4 |
C26—C21—C2 | 120.16 (9) | C5—C57—H571 | 109.4 |
C22—C21—C2 | 121.03 (8) | N5—C57—H572 | 109.4 |
C23—C22—C21 | 120.35 (8) | C5—C57—H572 | 109.4 |
C23—C22—H22 | 119.8 | H571—C57—H572 | 108.0 |
C21—C22—H22 | 119.8 | C51—N5—C57 | 120.10 (7) |
C22—C23—C24 | 120.43 (9) | C51—N5—H5 | 113.4 (6) |
C22—C23—H23 | 119.8 | C57—N5—H5 | 112.4 (7) |
C24—C23—H23 | 119.8 | C52—C51—C56 | 118.06 (7) |
C25—C24—C23 | 119.65 (8) | C52—C51—N5 | 122.64 (7) |
C25—C24—H24 | 120.2 | C56—C51—N5 | 119.11 (7) |
C23—C24—H24 | 120.2 | C51—C52—C53 | 121.18 (7) |
C24—C25—C26 | 119.96 (8) | C51—C52—H52 | 119.4 |
C24—C25—H25 | 120.0 | C53—C52—H52 | 119.4 |
C26—C25—H25 | 120.0 | C54—C53—C52 | 119.94 (8) |
C25—C26—C21 | 120.79 (9) | C54—C53—H53 | 120.0 |
C25—C26—H26 | 119.6 | C52—C53—H53 | 120.0 |
C21—C26—H26 | 119.6 | O5—C54—C53 | 124.45 (7) |
C4—N3—C2 | 116.40 (7) | O5—C54—C55 | 115.93 (7) |
N3—C4—N4 | 119.57 (7) | C53—C54—C55 | 119.61 (7) |
N3—C4—C5 | 122.37 (8) | C54—O5—C58 | 116.58 (6) |
N4—C4—C5 | 118.05 (7) | O5—C58—H581 | 109.5 |
C4—N4—C41 | 130.19 (7) | O5—C58—H582 | 109.5 |
C4—N4—H4 | 113.6 (7) | H581—C58—H582 | 109.5 |
C41—N4—H4 | 113.3 (7) | O5—C58—H583 | 109.5 |
N4—C41—C46 | 127.26 (8) | H581—C58—H583 | 109.5 |
N4—C41—C42 | 116.00 (8) | H582—C58—H583 | 109.5 |
C46—C41—C42 | 116.73 (8) | C56—C55—C54 | 120.20 (7) |
F4—C42—C43 | 119.27 (8) | C56—C55—H55 | 119.9 |
F4—C42—C41 | 116.93 (8) | C54—C55—H55 | 119.9 |
C43—C42—C41 | 123.80 (9) | C55—C56—C51 | 121.01 (8) |
C42—C43—C44 | 118.59 (9) | C55—C56—H56 | 119.5 |
C42—C43—H43 | 120.7 | C51—C56—H56 | 119.5 |
C44—C43—H43 | 120.7 | N1—C6—C5 | 121.95 (7) |
C45—C44—C43 | 119.27 (8) | N1—C6—C61 | 115.44 (8) |
C45—C44—H44 | 120.4 | C5—C6—C61 | 122.62 (8) |
C43—C44—H44 | 120.4 | C6—C61—H611 | 109.5 |
C44—C45—C46 | 121.54 (9) | C6—C61—H612 | 109.5 |
C44—C45—H45 | 119.2 | H611—C61—H612 | 109.5 |
C46—C45—H45 | 119.2 | C6—C61—H613 | 109.5 |
C45—C46—C41 | 120.04 (8) | H611—C61—H613 | 109.5 |
C45—C46—H46 | 120.0 | H612—C61—H613 | 109.5 |
C41—C46—H46 | 120.0 | ||
C6—N1—C2—N3 | 1.13 (11) | C44—C45—C46—C41 | −0.17 (13) |
C6—N1—C2—C21 | −176.79 (6) | N4—C41—C46—C45 | −179.60 (8) |
N1—C2—C21—C26 | 166.64 (7) | C42—C41—C46—C45 | −1.20 (11) |
N3—C2—C21—C26 | −11.50 (10) | N3—C4—C5—C6 | 1.19 (10) |
N1—C2—C21—C22 | −12.51 (10) | N4—C4—C5—C6 | −177.79 (6) |
N3—C2—C21—C22 | 169.35 (7) | N3—C4—C5—C57 | 177.97 (7) |
C26—C21—C22—C23 | −1.44 (11) | N4—C4—C5—C57 | −1.00 (10) |
C2—C21—C22—C23 | 177.72 (7) | C6—C5—C57—N5 | −129.73 (8) |
C21—C22—C23—C24 | 0.23 (12) | C4—C5—C57—N5 | 53.76 (10) |
C22—C23—C24—C25 | 0.84 (12) | C5—C57—N5—C51 | −161.21 (6) |
C23—C24—C25—C26 | −0.68 (13) | C57—N5—C51—C52 | 27.18 (11) |
C24—C25—C26—C21 | −0.55 (13) | C57—N5—C51—C56 | −157.88 (7) |
C22—C21—C26—C25 | 1.60 (12) | C56—C51—C52—C53 | −0.53 (11) |
C2—C21—C26—C25 | −177.57 (7) | N5—C51—C52—C53 | 174.46 (7) |
N1—C2—N3—C4 | −3.45 (11) | C51—C52—C53—C54 | 0.40 (12) |
C21—C2—N3—C4 | 174.50 (6) | C52—C53—C54—O5 | −179.13 (7) |
C2—N3—C4—N4 | −178.93 (6) | C52—C53—C54—C55 | −0.22 (12) |
C2—N3—C4—C5 | 2.12 (10) | C53—C54—O5—C58 | 6.20 (11) |
N3—C4—N4—C41 | 1.78 (12) | C55—C54—O5—C58 | −172.75 (7) |
C5—C4—N4—C41 | −179.22 (7) | O5—C54—C55—C56 | 179.18 (7) |
C4—N4—C41—C46 | −13.42 (13) | C53—C54—C55—C56 | 0.17 (12) |
C4—N4—C41—C42 | 168.17 (7) | C54—C55—C56—C51 | −0.31 (11) |
N4—C41—C42—F4 | −0.01 (10) | C52—C51—C56—C55 | 0.48 (11) |
C46—C41—C42—F4 | −178.59 (7) | N5—C51—C56—C55 | −174.69 (7) |
N4—C41—C42—C43 | −179.89 (8) | C2—N1—C6—C5 | 2.61 (10) |
C46—C41—C42—C43 | 1.53 (12) | C2—N1—C6—C61 | −177.14 (6) |
F4—C42—C43—C44 | 179.69 (7) | C4—C5—C6—N1 | −3.64 (10) |
C41—C42—C43—C44 | −0.43 (13) | C57—C5—C6—N1 | 179.71 (7) |
C42—C43—C44—C45 | −1.00 (13) | C4—C5—C6—C61 | 176.09 (7) |
C43—C44—C45—C46 | 1.31 (13) | C57—C5—C6—C61 | −0.56 (11) |
Cg1, Cg2 and Cg3 are the centroids of the N1–C6, C41–C46 and C21–C26 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H4···N5 | 0.88 (1) | 2.07 (1) | 2.794 (2) | 139 (1) |
N4—H4···F4 | 0.88 (1) | 2.19 (1) | 2.633 (1) | 111 (1) |
C61—H611···O5i | 0.98 | 2.49 | 3.426 (2) | 159 |
C61—H612···Cg1ii | 0.98 | 2.69 | 3.381 (3) | 128 |
C61—H613···Cg2iii | 0.98 | 2.73 | 3.657 (3) | 159 |
C53—H53···Cg3ii | 0.95 | 2.74 | 3.634 (3) | 156 |
N5—H5···N1iii | 0.90 (1) | 2.76 (1) | 3.541 (2) | 145 (1) |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) −x+1/2, −y+3/2, −z+1; (iii) −x+1/2, −y+1/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C25H23FN4O |
Mr | 414.47 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 85 |
a, b, c (Å) | 27.075 (11), 8.922 (4), 22.983 (10) |
β (°) | 132.22 (5) |
V (Å3) | 4112 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.53 × 0.17 × 0.14 |
Data collection | |
Diffractometer | Oxford Diffraction Xcalibur PX κ-geometry |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 28521, 10469, 7196 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.876 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.121, 1.01 |
No. of reflections | 10469 |
No. of parameters | 288 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.61, −0.22 |
Computer programs: CrysAlis CCD (Oxford Diffraction, 2007), CrysAlis RED (Oxford Diffraction, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008).
Cg1, Cg2 and Cg3 are the centroids of the N1–C6, C41–C46 and C21–C26 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N4—H4···N5 | 0.88 (1) | 2.07 (1) | 2.794 (2) | 139 (1) |
N4—H4···F4 | 0.88 (1) | 2.19 (1) | 2.633 (1) | 111 (1) |
C61—H611···O5i | 0.98 | 2.49 | 3.426 (2) | 159 |
C61—H612···Cg1ii | 0.98 | 2.69 | 3.381 (3) | 128 |
C61—H613···Cg2iii | 0.98 | 2.73 | 3.657 (3) | 159 |
C53—H53···Cg3ii | 0.95 | 2.74 | 3.634 (3) | 156 |
N5—H5···N1iii | 0.90 (1) | 2.76 (1) | 3.541 (2) | 145 (1) |
Symmetry codes: (i) x, −y+1, z−1/2; (ii) −x+1/2, −y+3/2, −z+1; (iii) −x+1/2, −y+1/2, −z+1. |
References
Cieplik, J., Machoń, Z., Zimecki, M. & Wieczorek, Z. (1995). Il Farmaco, 50, 131–136. CAS Google Scholar
Cieplik, J., Pluta, J., Bryndal, I. & Lis, T. (2006). Acta Cryst. C62, o259–o261. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Cieplik, J., Pluta, J. & Gubrynowicz, O. (2003). Boll. Chim. Farm. 142, 146–150. PubMed CAS Google Scholar
Cieplik, J., Raginia, M., Pluta, J., Gubrynowicz, O., Bryndal, I. & Lis, T. (2008). Acta Pol. Pharm. Drug Res. 65, 427–434. CAS Google Scholar
Oxford Diffraction (2007). CrysAlis CCD and CrysAlis RED. Oxford Diffraction Ltd, Abington, England. Google Scholar
Pluta, J., Flendrich, M. & Cieplik, J. (1996). Boll. Chim. Farm. 135, 459–464. CAS PubMed Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Pyrimidines are very important molecules in biology and have many applications in the areas of pharmaceuticals. 6-Methyl-2-phenyl-4-thio-5-pyrimidine carboxylic acid is a key intermediate for our synthesis of a wide range of various 6-methyl-2-phenyl-5-substituted pyrimidine derivatives (Cieplik et al., 1995, 2003, 2008; Pluta et al., 1996). Microbiological testing of a number of such pyrimidine derivatives, designed and synthesized as immunomodulating agents, showed them to possess antibacterial and antifungal activity (Cieplik et al., 1995, 2003). In connection with these studies, we have described the structures of two polymorphic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine (Cieplik et al., 2006). Now, we have prepared a new compound of this class of derivatives, namely N-(2-fluorophenyl)-5-[(4-methoxyphenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine and present its structure here. In the crystal, the orientation of the amine groups with respect to each other results from intramolecular N—H···N hydrogen bond between N4—H4 and N5, which closes six-membered ring. Conformation of the title molecule is best defined by the dihedral angles formed between the pyrimidine ring plane and the planes of the phenyl group attached to C2 and the benzene rings of the (2-fluorophenyl)amino or (4-methoxyphenyl)aminomethyl groups, attached to C4 or C5 of the pyrimidine ring. These dihedral angles are 12.8 (2)°, 12.0 (2)° and 86.1 (2)°, respectively. The twist of 12.8 (2)° of the phenyl group is similar to that found in the polymorphic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine [5.2 (2)° and 6.4 (2)°; Cieplik et al., 2006]. Additionally, the aromatic atom C41 of the (2-fluorophenyl)amino group is nearly coplanar with the pyrimidine ring. The C51 atom of (4-methoxyphenyl)aminomethyl group deviates from the pyrimidine ring plane by -1.01 (1) Å.
Contrary to polymorhic forms of N-(4-chlorophenyl)-5-[(4-chlorophenyl)aminomethyl]-6-methyl-2-phenylpyrimidin-4-amine (Cieplik et al., 2006), the amine atom N5 does not participate in hydrogen bonding. The crystal structure of title compound is stabilized by weak C—H···O and C—H···π hydrogen bonds. In the crystal, the molecules are linked by C—H···O hydrogen bonds involving the methyl group C61 as a donor and O5 atom (x, -y + 1, z - 1/2) of the methoxy group as an acceptor. This interaction links the molecules into polymeric chains parallel to the c axis (Fig. 2). These chains are further linked by C—H···π interactions. The methyl group C61 acts as a donor to the fluorinated aryl ring C41—C46 (symmetry code: -x + 1/2, -y + 3/2, -z + 1) and also to the pirymidine ring (-x + 1/2, -y + 1/2, -z + 1). Additionally, the C53—H53 group acts as a donor of C—H···π(arene) interaction to the benzene ring C21—C26 (-x + 1/2, -y + 3/2, -z + 1). Combination of these interactions leads to layers of molecules parallel to the bc plane (Fig. 3).