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Structure of 13054-02-9
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 13054-02-9 |
Formula : | C6H4INO2 |
M.W : | 249.01 |
SMILES Code : | O=C(O)C1=CN=C(I)C=C1 |
MDL No. : | MFCD03426924 |
InChI Key : | PCGJGRDGMJRQAJ-UHFFFAOYSA-N |
Pubchem ID : | 819062 |
GHS Pictogram: |
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Signal Word: | Danger |
Hazard Statements: | H301-H311-H331 |
Precautionary Statements: | P261-P264-P270-P271-P280-P302+P352-P304+P340-P310-P330-P361-P403+P233-P405-P501 |
Class: | 6.1 |
UN#: | 2811 |
Packing Group: | Ⅲ |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydrogen sulfate; hydrogen iodide; | 6-Iodonicotinic acid (Compound B) To 27.97 g (186.6 mmol) of sodium iodide cooled to -78 C. was added 121.77 g (71.6 ml, 952.0 mmol) of hydriodic acid (in 57 wt % aqueous solution). The reaction mixture was allowed to warm slightly with stirring for 5 minutes, and then 30 g (190.4 mmol) of 6-chloronicotinic acid was added. The resulting mixture was allowed to warm to room temperature with stirring and then heated at 120-125 C. in an oil bath for 42 hours. A dark brown layer formed above the yellow solid material. The reaction mixture was allowed to cool to room temperature and then poured into acetone (chilled to 0 C.). The resultant yellow solid was collected by filtration, washed with 200 ml of 1N NaHSO3 solution, and dried in vacuum (3 mm Hg) to give the title compound as a pale yellow solid. PMR (DMSO-d6): d 7.90 (1H, dd, J=8.1, 2 Hz), 7.99 (1H, d, J=8.1 Hz), 8.80 (1H, d, J=2 Hz). | |
With sodium hydrogen sulfate; hydrogen iodide; | 6-Iodonicotinic acid To 27.97 g (186.6 mmol) of sodium iodide cooled to -78 C. was added 121.77 g (71.6 ml, 952.0 mmol) of hydriodic acid (57 wt %). The reaction mixture was allowed to warm slightly with stirring for 5 minutes, and then 30.00 g (190.4 mmol) of 6-chloronicotinic acid was added. The resulting mixture was allowed to warm to room temperature with stirring and then heated at 120-125 C. in an oil bath for 42 hours. A dark brown layer formed above the yellow solid material. The reaction mixture was allowed to cool to room temperature and then poured into acetone (chilled to 0 C.). The resultant yellow solid was collected by filtration, washed with 200 ml of 1N NaHSO3 solution, and dried in high vacuum (3 mm Hg) to give the title compound as a pale yellow solid. PMR (DMSO-d6): δ 7.90 (1H, dd, J=8.1, 2 Hz), 7.99 (1H, d, J=8.1 Hz), 8.80 (1H, d, J=2.Hz). | |
With sodium hydrogen sulfate; hydrogen iodide; | 6-Iodonicotinic acid To 27.97 g (186.6 mmol) of sodium iodide cooled to -78 C. was added 121.77 g (71.6 ml, 952.0 mmol) of hydriodic acid (in 57 wt % aqueous solution). The reaction mixture was allowed to warm slightly with stirring for 5 minutes, and then 30.00 g (190.4 mmol) of 6-chloronicotinic acid was added. The resulting mixture was allowed to warm to room temperature with stirring and then heated at 120-125 C. in an oil bath for 42 hours. A dark brown layer formed above the yellow solid material. The reaction mixture was allowed to cool to room temperature and then poured into acetone (chilled to 0 C.). The resultant yellow solid was collected by filtration, washed with 200 ml of 1N NaHSO3 solution, and dried in vacuum (3 mm Hg) to give the title compound as a pale yellow solid. PMR (DMSO-d6): d 7.90 (1H, dd, J=8.1, 2 Hz), 7.99 (1H, d, J=8.1 Hz), 8.80 (1H, d, J=2 Hz). |
With hydrogen iodide; sodium iodide; at 100 - 130℃; for 40.0h;Heating / reflux; | A mixture of 15.962 g ((0.106 mol) of sodium iodide in 51 g (30 ml, 40 mmol) of hydriodic acid were stirred for 5 minutes. To the mixture was added 17.184 g (0.109 mol) of 6-chloro-nicotinic acid and the resulting mixture refluxed at 100-130 C. for 40 hours. The dark brown mixture was then taken up in 300 ml of acetone and stirred to dissolve the excess NaI. The product was collected by suction filtration, rinsed with 100 mL in 1N NaHSO3 and dried to give the title compound as a yellow solid. PMR (DMSO-d6): δ 3.36 (1H, s), 7.89 (1H, dd, J=2.5, 8.2 Hz), 8.00 (1H, d, J=7.5 Hz), 8.79 (1H, d, J=2.4 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
76% | With dmap; triethylamine; In dichloromethane; at 0 - 20℃; for 2.0h;Heating / reflux; | Triethylamine (1.67 μl, 1.19 mmol), ethyl chloroformate (0.70 ml, 7.32 mmol) and 4-dimethylaminopyridine (0.45 g, 3.68 mmol) are added, at O0C, to a solution of 6-iodonicotinic acid (4) (Newkome, G. R., Moorf?eld, C. N. and Sabbaghian, B., J. Org. Chem., 1986, 51, 953-954) (250 mg, 1.00 mmol) in anhydrous dichloromethane (25 ml). After returning to ambient temperature, the reaction mixture is brought to reflux for 2 hours. The solution is evaporated to dryness and then the residue is purified on a column of alumina eluted with dichloromethane, to result in the ester 5 (211 mg, 0.76 mmol) ; yield: 76%; Rf: 0.92 (Al2O3, dichloromethane); melting point: 46-48 C; 1H NMR (200 MHz, CDCl3) d 1.32 (t, 3H, J = 3 Hz), 4.32 (q, 2H, J = 7 Hz), 7.78 (m, 2H), 8.82 (d, IH, J = 2 Hz); 13C NMR (50 MHz, CDCl3) d 14.2, 61.6, 123.3, 125.7, 134.7, 138.0, 151.4, 164.7; IR (KBr) v cm"1: 1268, 1292, 1577, 1711, 3082; MS (m/z, %) 277 (M+, 61), 232 (21), 204 (20), 150 (100), 127 (16), 77 (43), 51 (22). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With dmap; dicyclohexyl-carbodiimide; In dichloromethane; | EXAMPLE 8: 6- (8, 8-Dimethyl-5-p-tolyl-7,8-dihydro-2- naphthylselanylethynyl) nicotinic acid a. Ethyl 6-IODONICOTINATE 112 g (450 mmol) of 6-iodonicotinic acid are dissolved in 1.3 1 of dichloromethane and 40 ml (670 mmol) of ethanol. 102 g (495 mmol) of N, N'- dicyclohexylcarbodiimide and 16.5 g (1.345 mol) of dimethylaminopyridine are added. The reaction medium is stirred for one hour, filtered through Celite and concentrated. The residue obtained is taken up in heptane and filtered to give a powder (116 g; yield = 93%). |
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In dichloromethane; at 20 - 55℃; for 32.0h;Heating / reflux; | A mixture of 16.230 g (84.5 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride in 90 ml of methylene chloride was cannulated into a mixture of 17.80 g (71.2 mmol) of <strong>[13054-02-9]6-iodo-nicotinic acid</strong> in 30 ml of methylene chloride. The resulting mixture was stirred and 7.85 g (0.171 mmol) of ethanol, and then 0.826 g (6.8 mmol) of 4-dimethylaminopyridine was added and the resulting mixture refluxed at 55 C. for 20 hours and then stirred at room temperature for 12 hours. Ether and water were added and the layers separated. The aqueous layer was extracted with 2×40 ml of ether and the organic portions combined, washed with saturated NaCl, dried over Na2SO4, and concentrated yielding a white solid which was purified by flash chromatography (SiO2, 10% ethyl acetate in hexanes) to give the title compound as a white solid. PMR (CDCl3): δ 1.41 (3H, t, J=7.1 Hz), 4.41 (2H, q, J=7.1 Hz), 7.83 (1H, d, J=8.2 Hz), 7.89 (1H, dd, J=2.4, 8.2 Hz), 8.93 (1H, d, J=2.1 Hz). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
In methanol; toluene; at 0 - 20℃; for 2.0h; | 6-Iodo-nicotinic acid methyl ester To a mixture of 6-Iodo-nicotinic acid (6.8 g, 27.4 mmol), toluene (40 mL) and MeOH (40 mL) cooled at 0 C, was added TMS diazomethane dropwise. The reaction mixture was then stirred at ambient temperature for additional 2 hours. The reaction mixture was concentrated in vacuo, the yellow residue was recrystallized from toluene to give the desired product as yellow crystals (5.6 g), MP 136-138 C, MS (APCI+) : n2/z 263.8 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With N-ethyl-N,N-diisopropylamine; In ISOPROPYLAMIDE; at 110℃; for 16.0h;Product distribution / selectivity; | To a 250 mL round bottom flask was charged with 6-iodonicotinic acid (373.3mg, 1.5 mmol), Preparation 4 (414 mg, 1 mmol), dimethylacetamide (2 mL) and diisopropylethylamine (320 mg, 2.5 mmol). After the reaction mixture was stirred at 110C for 16 hours under nitrogen, it was cooled to room temperature and was slowly added to ice water (2 mL) with stirring. The resulting white slurry was filtered by vacuum filtration and the product was washed with water (3 x 2 mL). The crude product was dried in vacuo at 6O0C for 16 hours to afford Example 6 as a white solid (472 mg, 88%). The crude product was re-dissolved in chloroform (25 mL) and stirred overnight at room temperature then 4C for 30 minutes. The white crystals was collected by vacuum filtration, washed with cold chloroform (2 x 5 mL), and dried under vacuo at 60 C to give Example 6 (347 mg, 75% yield). LCMS (M+l)+ = EPO <DP n="76"/>536. 1H-NMR (DMSO-D6, 500 MHz) δ 8.68 (s, IH), 8.31 (s, IH), 8.00 (s, 2H), 7.90 (s, IH), 7.63 (s, 2H), 6.84 (s, 2H), 4.37 (t, J=9.9Hz, IH), 4.16(d, J= 9.9 Hz, 3H), 4.00(d, J=12.1Hz, IH), 3.19 (s, 3H); 13C-NMR (DMSO-D6, 500 MHz) δ 170.81, 166.46, 158.01, 152.81, 150.37, 139.08, 137.81, 133.65, 132.88, 132.15, 128.83, 127.64, 124.46, 114.62, 110.73, 105.48, 48.03, 46.75, 45.24, 24.73. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium iodide; | 6-iodonicotinic acid Sodium iodide (20.59 g, 137.40 mmol) was cooled to -78 C. under argon and then hydriodic acid (97.13 g, 759.34 mmol) was added. The cooling bath was removed and the suspension was stirred for 5 minutes. To this mixture was added 6-chloronicotinic acid (22.09 g, 140.20 mmol) and the resulting mixture was slowly warmed to ambient temperature with stirring. The mixture was heated to reflux at 125 C. for 24 hours, cooled to ambient temperature and poured into acetone (500 ml) at 0 C. The yellow solid was collected by filtration and washed with 200 ml of 1N aqueous NaHSO3 solution. Recrystallization from methanol (crystals were washed with ethyl ether) afforded the title compound as white crystals: mp 177-179 C. ›lit. mp 187-192, Newkome et al. "Reductive Dehalogenation of Electron-Poor Heterocycles: Nicotinic Acid Derivatives" J. Org. Chem. 51: 953-954 (1986). 1H NMR (DMSO-d6): δ 8.81 (1H, dd, J=0.8, 2.4 Hz), 8.01 (1H, dd, J=0.8, 8.2 Hz), 7.91 (1H, dd, J=2.4, 8.2 Hz). | |
With sodium iodide; | 6-iodonicotinic acid Sodium iodide (20.59 g, 137.40 mmol) was cooled to -78 C. under argon and then hydriodic acid (97.13 g, 759.34 mmol) was added. The cooling bath was removed and the suspension was stirred for 5 minutes. To this mixture was added 6-chloronicotinic acid (22.09 g, 140.20 mmol) and the resulting mixture was slowly warmed to ambient temperature with stirring. The mixture was heated to reflux at 125 C. for 24 hours, cooled to ambient temperature and poured into acetone (500 ml) at 0 C. The yellow solid was collected by filtration and washed with 200 ml of 1N aqueous NaHSO3 solution. Recrystallization from methanol (crystals were washed with ethyl ether) afforded the title compound as white crystals: mp 177-179 C. ›lit. mp 187-192, Newkome et al. "Reductive Dehalogenation of Electron-Poor Heterocycles: Nicotinic Acid Derivatives" J. Org. Chem. 51: 953-954 (1986). 1H NMR (DMSO-d6): δ 8.81 (1H, dd, J=0.8, 2.4 Hz), 8.01 (1H, dd, J=0.8, 8.2 Hz), 7.91 (1H, dd, J=2.4, 8.2 Hz). | |
With hydrogen iodide; | 6-Iodonicotinic acid (Compound B) To 27.97 g (186.6 mmol) of sodium iodide cooled to -78 C. was added 121.77 g (71.6 ml, 952.0 mmol) of hydriodic acid (in 57 wt % aqueous solution). The reaction mixture was allowed to warm slightly with stirring for 5 minutes and then 30.00 g (190.4 mmol) of 6-chloronicotinic acid was added. The resulting mixture was allowed to warm to room temperature with stirring and then heated at 120-125 C. in an oil bath for 42 hours. A dark brown layer formed above the yellow solid material. The reaction mixture was allowed to cool to room temperature and then poured into acetone (chilled to 0 C.). The resultant yellow solid was collected by filtration, washed with 200 ml of 1 N aqueous NaHSO3 solution, and dried in vacuum (3 mm Hg) to give the title compound as a pale yellow solid. PMR (DMSO-d6):d 7.90 (1H, dd, J=8.1, 2 Hz), 7.99 (1H, d, J=8.1 Hz), 8.80 (1H, d, J=2 Hz). |
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