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CAS No. : | 249889-68-7 |
Formula : | C9H7ClN2O |
M.W : | 194.62 |
SMILES Code : | COC1=NC2=C(Cl)C=CN=C2C=C1 |
MDL No. : | MFCD09027618 |
InChI Key : | OPAVZRJSEDSFMQ-UHFFFAOYSA-N |
Pubchem ID : | 22244395 |
GHS Pictogram: | ![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P280-P305+P351+P338-P310 |
* 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 dmap; In chlorobenzene; at 140℃; for 14.0h; | Example 13; iV-(l-ethyl-lJ-pyrazol-4-yl)-2-[2-methoxy-4-(6-methoxy-l,5-naphthyridin- 4~yloxy)phenyl] acetamide; A mixture of 4-chloro-6-methoxy-l,5-naphthyridine (0.08 g), JV-(I -ethyl-lH-pyrazol-4- yl)-2-(4-hydroxy-2-methoxyphenyl)acetamide (0.113 g), 4-dimethylaminopyridine (0.151 g) and chlorobenzene (1 ml) was stirred and heated under argon to 140C for 14 hours. The resultant mixture was cooled to ambient temperature and partitioned between methylene <n="154"/>chloride and 2N aqueous hydrochloric acid. The organic extract was dried over magnesium sulphate and evaporated. The residue was purified by column chromatography on silica using a solvent gradient from ethyl acetate to a 19:1 mixture of ethyl acetate and methanol as eluent. There was thus obtained the title compound as a solid (0.018 g); 1H NMR Spectrum:5 (DMSOd6) 1.32 (t, 3H), 3.58 (s, 2H), 3.75 (s, 3H), 3.95 (s, 3H), 4.07 (q, 2H), 6.79 (m, IH), 6.91 (d, IH), 6.93 (d, IH), 7.29 (d, IH), 7.31 (d, IH), 7.41 (s, IH), 7.87 (s, IH), 8.28 (d, IH), 8.61 (d, IH), 10.01 (s, IH); Mass Spectrum: M+H+ 434. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With caesium carbonate; In N,N-dimethyl-formamide; at 130℃; for 3.5h; | The 2-[2-methoxy-4-(6-methoxy-l55~naphthyridm-4-yloxy)phenyl]acetic acid used as a5 starting material was prepared as follows :; -Under an atmosphere of argon, a mixture of 4-chloro-6-methoxy-l,5-naphthyridine (0.97 g), tert-bvLtyl 2-(4-hydroxy-2-methoxyphenyl)acetate (1.19 g), caesium carbonate (3.26 g) and DMF (10 ml) was stirred and heated to 13O0C for 3.5 hours. The resultant mixture was cooled to ambient temperature and partitioned between ethyl acetate and water.I0 The organic phase was dried over magnesium sulphate and evaporated. The residue was purified by column chromatography on silica using increasingly polar mixtures of petroleum ether and ethyl acetate as eluent. There was thus obtained tert-bxxtyl 2-[2-methoxy- 4-(6-methoxy-l,5-naphthyridin-4-yloxy)phenyl]acetate (1.22 g); 1H NMR Spectrum: (DMSOd6) 1.41 (s, 9H)5 3.51 (s, 2H), 3.75 (s, 3H)5 3.94 (s, 3H)5 6.71 (m5 IH), 6.92 (m, 2H)5 is 7.24 (d5 IH)5 7.29 (d, IH)5 8.27 (d5 IH)5 8.61 (d, IH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With caesium carbonate; In N,N-dimethyl-formamide; at 130℃; for 7.0h; | Under an atmosphere of argon, a mixture of 4-chloro-6-methoxy-l,5-naphthyridine (0.485 g), methyl 2-(5-hydroxy-3-methoxypyridin-2-yl)acetate (0.493 g), caesium carbonate (1.63 g) and DMF (10 ml) was stirred and heated to 13O0C for 7 hours. The resultant mixture was cooled to ambient temperature and partitioned between ethyl acetate and water. The organic phase was dried over magnesium sulphate and evaporated. The residue was purified by column chromatography on silica using increasingly polar mixtures of ethyl acetate and methanol as eluent. There was thus obtained methyl 2-[3-methoxy-5-(6-methoxy- l,5-naphthyridin-4-yloxy)pyridin-2-yl]acetate as a solid (0.51 g); 1H NMR Spectrum: <n="172"/>T/GB2007/001221- 171 -(DMSOd6) 3.63 (s, 3H), 3.79 (s, 2H), 3.8 (s, 3H)5 3.83 (s, 3H), 7.13 (d, IH), 7.29 (d, IH)5 7.44 (d, IH)5 7.98 (d, IH)5 8.3 (d, IH)5 8.68 (d, IH); Mass Spectrum: M+H+ 356. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trichlorophosphate; at 20℃; for 3.0h; | (c) 4-Chloro-6-methoxy-[1,5]naphthyridine The acid (8b) (6.82 g) was heated in quinoline (20ml) at reflux for 2 hours, the mixture was cooled and poured into ether (200ml) and the orange solid was filtered and washed with ether (5 x 200ml). A sample (3.87g) of the dried solid was treated with phosphorus oxychloride (30ml) at room temp for 3 hours, the solvent was removed in vacuo and the residue quenched with crushed ice (200g). The mixture was basified with ammonia solution and filtered. The solid was washed with dichloromethane (10 x 100ml), which was evaporated and chromatographed on silica gel (dichloromethane as eluent) to give a yellow solid (3.0g). MS (+ve ion electrospray) m/z 195, 197 (MH+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trichlorophosphate; In quinoline; | (d) 4-Chloro-6-methoxy-[1,5]naphthyridine Example 3 c (6.82 g) was heated in quinoline (20 ml) at reflux for 2 h, the mixture was cooled and poured into ether (200 ml) and the orange solid was filtered and washed with ether (5*200 ml). A sample (3.87 g) of the dried solid was treated with phosphorus oxychloride (30 ml) at room temp for 3 h, the solvent was removed in vacuo and the residue quenched with crushed ice (200 g) The mixture was basified with ammonia solution and filtered. The solid was washed with DCM (10*100 ml) and which were combined and evaporated. Flash chromatography (SiO2, DCM as eluent) gave the title compound as a yellow solid (3.00 g). m/z: 195,197 (MH+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
(c) 4-Chloro-6-methoxy-[1,5]naphthyridine The acid (6b) (6.82 g) was heated in quinoline (20 ml) at reflux for 2 hours, the mixture was cooled and poured into ether (200 ml) and the orange solid was filtered and washed with ether (5*200 ml). A sample (3.87 g) of the dried solid was treated with phosphorus oxychloride (30 ml) at room temp for 3 hours, the solvent was removed in vacuo and the residue quenched with crushed ice (200 g). The mixture was basified with ammonia solution and filtered. The solid was washed with dichloromethane (10*100 ml), which was evaporated and chromatographed on silica gel (dichloromethane as eluent) to give a yellow solid (3.0 g). MS (+ve ion electrospray) m/z 195, 197 (MH+). | ||
(c) 4-Chloro-6-methoxy-[1,5]-naphthyridine The acid (30b) (6.82 g) was heated in quinoline (20 ml) at reflux for 2 hours, the mixture was cooled and poured into ether and the orange solid was filtered and washed with ether. A sample (3.87 g) of the dried solid was treated with phosphorus oxychloride (30 ml) at room temp for 3 hours, the solvent was removed in vacuo and the residue quenched with crushed ice (200 g). The mixture was basified with ammonia solution and filtered. The solid was washed with dichloromethane (10*100 ml), which was evaporated and chromatographed on silica gel (dichloromethane as eluent) to give a yellow solid (3.0 g). MS (+ve ion electrospray) m/z 195, 197 (MH+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | With dmap; caesium carbonate; In dimethyl sulfoxide; at 130℃; | The residue was suspended in diisopropylethylamine (7 ml), phosphorus oxychloride (1.5 ml) was added to the suspension, and the mixture was stirred at 100C for one hr. Water was added to the reaction mixture under ice cooling. The aqueous layer was neutralized with an aqueous sodium hydrogencarbonate solution, and the organic layer was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by column chromatography with an acetone-chloroform system to give <strong>[249889-68-7]8-chloro-2-methoxy-[1,5]naphthyridine</strong> (572 mg, yield 29%) (3 steps). 8-Chloro-2-methoxy-[1,5]naphthyridine (50 mg), 5,6-dimethyl-[2,2']bipyridinyl-3-ol (51 mg), and 4-dimethylaminopyridine (94 mg) were dissolved in dimethylsulfoxide (1.5 ml), cesium carbonate (251 mg) was added to the solution, and the mixture was stirred at 130C overnight. The reaction mixture was cooled to room temperature, and water was added thereto. The organic layer was extracted with chloroform, and the chloroform layer was then washed with water and saturated brine and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by thin layer chromatography with a methanol-chloroform system to give the title compound (70 mg, yield 75%). 1H-NMR (CDCl3, 400 MHz): delta 2.34 (s, 3H), 2.66 (s, 3H), 3.92 (s, 3H), 6.92 (d, J = 5.4 Hz, 1H), 7.17 - 7.26 (m, 3H), 7.65 (dd, J = 7.6, 7.6 Hz, 1H), 8.16 (d, J = 8.1 Hz, 1H), 8.36 (s, 1H), 8.53 (d, J = 5.9 Hz, 1H), 8.58 (m, 1H) Mass spectrometric value (ESI-MS, m/z): 381 (M+Na)+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
28% | With dmap; In 1,2-dichloro-benzene; at 130℃; for 8.0h; | 2-Phenyl-[1,8]naphthyridin-3-ol (57 mg), <strong>[249889-68-7]8-chloro-2-methoxy-[1,5]naphthyridine</strong> (50 mg), and 4-dimethylaminopyridine (94 mg) were suspended in 1,2-dichlorobenzene (1.5 ml), and the suspension was stirred at 130C for 8 hr. The reaction mixture was cooled to room temperature, and an aqueous sodium hydrogencarbonate solution was added to the reaction mixture. The organic layer was extracted with chloroform, and the chloroform layer was then washed with water and saturated brine and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by thin layer chromatography with a methanol-chloroform system to give the title compound (27 mg, yield 28%). 1H-NMR (CDCl3, 400 MHz): delta 3.68 (s, 3H), 7.15 (d, J = 9.0 Hz, 1H), 7.18 (d, J = 5.1 Hz, 1H), 7.40 - 7.42 (m, 3H), 7.46 (dd, J = 4.4, 8.3 Hz, 1H), 7.58 (s, 1H), 8.03 (dd, J = 2.0, 8.3 Hz, 1H), 8.32 (d, J = 9.3 Hz, 1H), 8.38 - 8.41 (m, 2H), 8.69 (d, J = 5.1 Hz, 1H), 9.10 (dd, J = 2.0, 4.1 Hz, 1H) Mass spectrometric value (ESI-MS, m/z): 403 (M+Na)+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N-ethyl-N,N-diisopropylamine; trichlorophosphate; at 100℃; for 1.0h; | The residue was suspended in diisopropylethylamine (7 ml), phosphorus oxychloride (1.5 ml) was added to the suspension, and the mixture was stirred at 100C for one hr. Water was added to the reaction mixture under ice cooling. The aqueous layer was neutralized with an aqueous sodium hydrogencarbonate solution, and the organic layer was extracted with ethyl acetate. The ethyl acetate layer was then washed with water and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by column chromatography with an acetone-chloroform system to give 8-chloro-2-methoxy-[1,5]naphthyridine (572 mg, yield 29%) (3 steps). 8-Chloro-2-methoxy-[1,5]naphthyridine (50 mg), 5,6-dimethyl-[2,2']bipyridinyl-3-ol (51 mg), and 4-dimethylaminopyridine (94 mg) were dissolved in dimethylsulfoxide (1.5 ml), cesium carbonate (251 mg) was added to the solution, and the mixture was stirred at 130C overnight. The reaction mixture was cooled to room temperature, and water was added thereto. The organic layer was extracted with chloroform, and the chloroform layer was then washed with water and saturated brine and was dried over anhydrous sodium sulfate. The solvent was removed by distillation under the reduced pressure, and the residue was purified by thin layer chromatography with a methanol-chloroform system to give the title compound (70 mg, yield 75%). 1H-NMR (CDCl3, 400 MHz): delta 2.34 (s, 3H), 2.66 (s, 3H), 3.92 (s, 3H), 6.92 (d, J = 5.4 Hz, 1H), 7.17 - 7.26 (m, 3H), 7.65 (dd, J = 7.6, 7.6 Hz, 1H), 8.16 (d, J = 8.1 Hz, 1H), 8.36 (s, 1H), 8.53 (d, J = 5.9 Hz, 1H), 8.58 (m, 1H) Mass spectrometric value (ESI-MS, m/z): 381 (M+Na)+ | |
With trichlorophosphate; at 110℃; for 12.0h;Inert atmosphere; | Step 3: 8-Chloro-2-methoxy-1,5-naphthyridine To the intermediate 6-methoxy-1,5-naphthyridin-4(1H)-one (15.0 g, 0.085 mumol) was added POCl3 (300 mL) dropwise under nitrogen atmosphere at RT. The reaction mixture was heated to 110 C. with constant stirring. After 12 h, the mixture was concentrated in vacuo and azeotroped with toluene (2*100 mL). The residue was dissolved in ice-water (100 mL) and adjusted pH of the solution to 7 using 10% NaHCO3 solution, and extracted with EtOAc (4*100 mL). The combined organic extracts were washed with water (2*100 mL), saturated NaCl solution (100 mL), dried (Na2SO4), filtered and concentrated in vacuo. | |
Step 3: 8-Chloro-2-methoxy-1.5-naphthyridine; To the intermediate 6-methoxy-l,5-naphthyridin-4(lH)-one (15.0 g, 0.085mol) was added POCI3 (300 mL) dropwise under nitrogen atmosphere at RT. The reaction mixture was heated to 110 C with constant stirring. After 12 h, the mixture was concentrated in vacuo and azeotroped with toluene (2 * 100 mL). The residue was dissolved in ice-water (100 mL) and adjusted pW of the solution to 7 using 10% NaHCO3 solution, and extracted with EtOAc (4 x 100 mL). The combined organic extracts were washed with water (2 x 100 mL), saturated NaCl solution ( 100 mL), dried (Na2SO4), filtered and concentrated in vacuo. |
With N-ethyl-N,N-diisopropylamine; trichlorophosphate; In chlorobenzene; at 70℃; for 1.5h; | Under an atmosphere of argon, a solution of phosphorus oxychloride (0.128 ml) in chlorobenzene (0.15 ml) was added dropwise to a stirred mixture of 6-methoxy-4-oxo- l,4-dihydro-l,5-naphthyridine (0.176 g), diisopropylethylamine (0.261 ml) and chlorobenzene (5 ml). The resultant mixture was heated to 700C for 1.5 hours. The mixture was evaporated and the residue was partitioned between diethyl ether and a saturated aqueous sodium 0 bicarbonate solution. The organic phase was dried over magnesium sulphate and evaporated. There was thus obtained 4-chloro-6-methoxy-l,5-naphthyridine (0.15 g); 1H NMR Spectrum: <n="155"/>(DMSOd6) 4.07 (s, 3H), 7.37 (d, IH)5 7.92 (d, IH), 8.34 (d, IH), 8.72 (d, IH); Mass Spectrum: M+H+ 195. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
51% | 81.i. N1-(6-methoxy-[1,5]naphthyridin-4-yl)-ethane-1,2-diamine A mixture of <strong>[249889-68-7]8-chloro-2-methoxy-1,5-naphthyridine</strong> (1.71 g, 8.81 mmol) and ethylenediamine (1.18 mL, 2 eq.) was heated slowly to 80 C. over 1 h and subsequently up to 100 C. for 2 h. After cooling to rt, the yellow solution was taken in DCM and successively washed with NaHCO3. The aq. layer was back extracted with DCM (3 times) and the combined org. layers were concentrated to afford the title intermediate as a pale yellow oil (0.98 g, 51% yield). MS (ESI, m/z): 219.4 [M+H+]. | |
51% | In tetrahydrofuran; at 80 - 100℃; for 3.0h; | Example 81 : (S)-3-(2,3-dihydro-benzo [ 1 ,4] dioxin-6-yl)-5- { [2-(6-methoxy- [l,5]naphthyridin-4-ylamino)-ethylamino]-methyl}-oxazolidin-2-one:; 81. i. N1 -(6-methoxy-fl, 5]naphthyridin-4-yl)-ethane-l,2-diamine:; A mixture of 8-chloro-2-methoxy-l,5-naphthyridine (1.71 g, 8.81 mmol) and ethylenediamine (1.18 mL, 2 eq.) was heated slowly to 800C over 1 h and subsequently up to 1000C for 2 h. After cooling to rt, the yellow solution was taken in DCM and successively washed with NaHCO3. The aq. layer was back extracted with DCM (3 times) and the combined org. layers were concentrated to afford the title intermediate as a pale yellow oil (0.98 g, 51% yield). MS (ESI, m/z): 219.4 [M+H+]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; In 1,4-dioxane; at 100℃; for 20.0h;Sealed tube; | A mixture of 8-chloro-2-(methyloxy)-l,5-naphthyridine (12 g, 61.7 mmol) in 4M HCl in dioxane (150 rtiL) was combined in a sealed tube and stirred at 100 0C for 20 h. The reaction was cooled to room temperature and then concentrated in vacuo. The residue was dried in a vacuum oven (80 0C) overnight to provide the bis- HCl salt of the title compound. MS(ES)+ m/e 181 [M+H]+. This crude product was used directly in the next step |
Tags: 249889-68-7 synthesis path| 249889-68-7 SDS| 249889-68-7 COA| 249889-68-7 purity| 249889-68-7 application| 249889-68-7 NMR| 249889-68-7 COA| 249889-68-7 structure
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P370 + P378 | In case of fire: |
P370 + P380 | In case of fire: Evacuate area. |
P370 + P380 + P375 | In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion. |
P371 + P380 + P375 | In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion. |
Storage | |
Code | Phrase |
P401 | |
P402 | Store in a dry place. |
P403 | Store in a well-ventilated place. |
P404 | Store in a closed container. |
P405 | Store locked up. |
P406 | Store in corrosive resistant/ container with a resistant inner liner. |
P407 | Maintain air gap between stacks/pallets. |
P410 | Protect from sunlight. |
P411 | |
P412 | Do not expose to temperatures exceeding 50 oC/ 122 oF. |
P413 | |
P420 | Store away from other materials. |
P422 | |
P402 + P404 | Store in a dry place. Store in a closed container. |
P403 + P233 | Store in a well-ventilated place. Keep container tightly closed. |
P403 + P235 | Store in a well-ventilated place. Keep cool. |
P410 + P403 | Protect from sunlight. Store in a well-ventilated place. |
P410 + P412 | Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF. |
P411 + P235 | Keep cool. |
Disposal | |
Code | Phrase |
P501 | Dispose of contents/container to ... |
P502 | Refer to manufacturer/supplier for information on recovery/recycling |
Physical hazards | |
Code | Phrase |
H200 | Unstable explosive |
H201 | Explosive; mass explosion hazard |
H202 | Explosive; severe projection hazard |
H203 | Explosive; fire, blast or projection hazard |
H204 | Fire or projection hazard |
H205 | May mass explode in fire |
H220 | Extremely flammable gas |
H221 | Flammable gas |
H222 | Extremely flammable aerosol |
H223 | Flammable aerosol |
H224 | Extremely flammable liquid and vapour |
H225 | Highly flammable liquid and vapour |
H226 | Flammable liquid and vapour |
H227 | Combustible liquid |
H228 | Flammable solid |
H229 | Pressurized container: may burst if heated |
H230 | May react explosively even in the absence of air |
H231 | May react explosively even in the absence of air at elevated pressure and/or temperature |
H240 | Heating may cause an explosion |
H241 | Heating may cause a fire or explosion |
H242 | Heating may cause a fire |
H250 | Catches fire spontaneously if exposed to air |
H251 | Self-heating; may catch fire |
H252 | Self-heating in large quantities; may catch fire |
H260 | In contact with water releases flammable gases which may ignite spontaneously |
H261 | In contact with water releases flammable gas |
H270 | May cause or intensify fire; oxidizer |
H271 | May cause fire or explosion; strong oxidizer |
H272 | May intensify fire; oxidizer |
H280 | Contains gas under pressure; may explode if heated |
H281 | Contains refrigerated gas; may cause cryogenic burns or injury |
H290 | May be corrosive to metals |
Health hazards | |
Code | Phrase |
H300 | Fatal if swallowed |
H301 | Toxic if swallowed |
H302 | Harmful if swallowed |
H303 | May be harmful if swallowed |
H304 | May be fatal if swallowed and enters airways |
H305 | May be harmful if swallowed and enters airways |
H310 | Fatal in contact with skin |
H311 | Toxic in contact with skin |
H312 | Harmful in contact with skin |
H313 | May be harmful in contact with skin |
H314 | Causes severe skin burns and eye damage |
H315 | Causes skin irritation |
H316 | Causes mild skin irritation |
H317 | May cause an allergic skin reaction |
H318 | Causes serious eye damage |
H319 | Causes serious eye irritation |
H320 | Causes eye irritation |
H330 | Fatal if inhaled |
H331 | Toxic if inhaled |
H332 | Harmful if inhaled |
H333 | May be harmful if inhaled |
H334 | May cause allergy or asthma symptoms or breathing difficulties if inhaled |
H335 | May cause respiratory irritation |
H336 | May cause drowsiness or dizziness |
H340 | May cause genetic defects |
H341 | Suspected of causing genetic defects |
H350 | May cause cancer |
H351 | Suspected of causing cancer |
H360 | May damage fertility or the unborn child |
H361 | Suspected of damaging fertility or the unborn child |
H361d | Suspected of damaging the unborn child |
H362 | May cause harm to breast-fed children |
H370 | Causes damage to organs |
H371 | May cause damage to organs |
H372 | Causes damage to organs through prolonged or repeated exposure |
H373 | May cause damage to organs through prolonged or repeated exposure |
Environmental hazards | |
Code | Phrase |
H400 | Very toxic to aquatic life |
H401 | Toxic to aquatic life |
H402 | Harmful to aquatic life |
H410 | Very toxic to aquatic life with long-lasting effects |
H411 | Toxic to aquatic life with long-lasting effects |
H412 | Harmful to aquatic life with long-lasting effects |
H413 | May cause long-lasting harmful effects to aquatic life |
H420 | Harms public health and the environment by destroying ozone in the upper atmosphere |
Sorry,this product has been discontinued.
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