Non-solvated crystals as well as preparation method and application thereof
A non-solvated, crystal technology, applied in the direction of organic chemical methods, non-central analgesics, anti-inflammatory agents, etc., can solve the problem of not preparing non-solvated crystals, etc.
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Embodiment 1
[0048] Example 1: Preparation of non-solvated crystal A of N-(2-aminophenyl)-6-(7-methoxyquinoline-4-oxygen)-1-naphthylcarboxamide
[0049] Put 5.0g of N-(2-aminophenyl)-6-(7-methoxyquinoline-4-oxo)-1-naphthylcarboxamide in a 2000mL three-necked flask, add 750mL of methanol, and place in a 65°C oil bath Heat and stir until dissolved. The resulting solution was cooled and crystallized in an ice-water bath at 0°C for 4 hours, the solid was collected by filtration, and dried in vacuum at 80°C for 12 hours to obtain non-solvated crystal A. Its X-ray powder diffraction pattern is as figure 2 As shown, there are characteristic peaks at reflection angles 2θ of about 4.42°, 6.88°, 8.78°, 9.26°, 12.74°, 13.82°, 15.78°, 18.58°, 20.86°, 22.56°, 25.72°, 27.08° and 28.72° ; Its infrared spectrum is as image 3 Shown at approximately 3452, 3404, 3357, 3230, 3064, 1622, 1576, 1525, 1506, 1452, 1423, 1388, 1363, 1311, 1253, 1224, 1161, 1088 and 1024cm -1 There is a characteristic absorpt...
Embodiment 2
[0050] Example 2: Preparation of non-solvated crystal B of N-(2-aminophenyl)-6-(7-methoxyquinoline-4-oxygen)-1-naphthylcarboxamide
[0051] Put 5.0g of N-(2-aminophenyl)-6-(7-methoxyquinoline-4-oxo)-1-naphthylcarboxamide in a 2000mL three-neck flask, add 1000mL of acetonitrile, and place in an oil bath at 80°C Heat and stir until dissolved. The resulting solution was cooled and crystallized in an ice-water bath at 0°C for 4 hours, the solid was collected by filtration, and dried in vacuum at 80°C for 12 hours to obtain non-solvated crystal B. The X-ray powder diffraction pattern of the crystal is shown in Figure 5 shown. Its X-ray powder diffraction pattern has characteristic peaks at about 4.88°, 9.68°, 12.74°, 14.52°, 17.72°, 19.82°, 21.86°, 24.30°, 25.26° at reflection angle 2θ; its infrared spectrum is as follows: Image 6 As shown, at about 3423, 3352, 3238, 3030, 1624, 1597, 1531, 1502, 1452, 1423, 1388, 1365, 1308, 1255, 1226, 1159, 1086, 1022cm -1 There is a chara...
Embodiment 3
[0052] Example 3: Preparation of non-solvated crystal C of N-(2-aminophenyl)-6-(7-methoxyquinoline-4-oxygen)-1-naphthylcarboxamide
[0053] Put 1.0g N-(2-aminophenyl)-6-(7-methoxyquinoline-4-oxo)-1-naphthylcarboxamide in a 50mL three-necked flask, add 5mL dimethyl sulfoxide, and stir at room temperature until dissolved. The obtained solution was dripped into 50 mL of water under stirring, stood still for 4 hours, filtered, washed with water, collected solid, and dried in vacuum at 80° C. for 24 hours to obtain non-solvated crystal C. The X-ray powder diffraction pattern of the crystal is shown in Figure 8 As shown, its X-ray powder diffraction pattern is about 4.84°, 9.68°, 12.92°, 14.60°, 16.46°, 17.20°, 17.44°, 17.88°, 19.20°, 20.54°, 21.06°, 22.00° at reflection angle 2θ , 25.28°, and 27.66° have characteristic peaks; its infrared spectrum is as Figure 9 As shown, there are characteristic absorptions at about 3452, 3369, 3217, 3016, 2962, 1793, 1728, 1626, 1595, 1574, ...
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