4-CHLORO-PYRIDINE-2,6-DICARBOXYLICACID

White solid

The following example describes the preparation of a material (treating agent) used to produce modified pigments according to an embodiment of the present invention, comprising a pigment having attached at least one heteroaryl group having at least two carboxylic acid groups or salts thereof. A solution of lead(II) nitrate (66 mg, 0.20 mmol) in ethanol/water (30 cm3, 2:1 molar ratio)was slowly added to an aqueous solution of PDA-Cl (40 mg, 0.20 mmol, 40 cm3). After24 h the precipitate of 3 was filtered and the clear solution was kept for slow evaporation.The result of slow evaporation was polycrystalline material not suitable for single crystalX-ray analysis. Elem. analysis for C7H2Pb1Cl1N1O4 (406.76 g mol1) Calc. (Found) %: C, 20.67 (20.53); H, 0.49 (0.25); N, 3.44 (3.34), yield: 46mg corresponding to 57%.A solution of cadmium(II) nitrate tetrahydrate (95 mg, 0.25 mmol) in ethanol/water(10 cm3, 2:1 molar ratio) was slowly added to a solution of H2PDA-Cl (50 mg, 0.25 mmol) in ethanol/water (40 cm3, 2:1 molar ratio). After 24 h the yellow precipitate of 2 was filtered and the clear solution was kept for slow evaporation. After a month, beige crystals suitable for X-ray analysis were afforded. Elem. analysis forC7H6Cd1Cl1N1O6 (347.98 g mol1) Calc. (Found) %: C, 24.16 (24.05); H, 1.73 (1.70); N, 4.03 (3.92), yield: 31mg corresponding to 36%.A solution of silver(I) nitrate (62.4 mg, 0.25 mmol) in ethanol/water (10 cm3, 2:1 molarratio) was slowly added to a solution of H2PDA-Cl (50 mg, 0.25 mmol) in ethanol/water(40 cm3, 2:1 molar ratio). After 24 h the yellow precipitate of 1 was filtered and theclear solution was kept in the dark for evaporation. After a month, beige needles suitablefor X-ray analysis were obtained. Elem. analysis for C14H11Ag1Cl2N2O10(546.02 g.mol1) Calc. (Found) %: C, 30.79 (31.03); H, 2.03 (1.98); N, 5.13 (5.19), yield:23mg corresponding to 17%.

Molecular Weight:201.56
XLogP3:1.2
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:5
Rotatable Bond Count:2
Exact Mass:200.9828853
Monoisotopic Mass:200.9828853
Topological Polar Surface Area:87.5
Heavy Atom Count:13
Complexity:211
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes