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CAS No. : | 22960-18-5 | MDL No. : | MFCD09907837 |
Formula : | C9H5BrFN | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | DOINWPRJXLNEBB-UHFFFAOYSA-N |
M.W : | 226.05 | Pubchem ID : | 21271249 |
Synonyms : |
|
Num. heavy atoms : | 12 |
Num. arom. heavy atoms : | 10 |
Fraction Csp3 : | 0.0 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 2.0 |
Num. H-bond donors : | 0.0 |
Molar Refractivity : | 49.4 |
TPSA : | 12.89 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -5.65 cm/s |
Log Po/w (iLOGP) : | 2.15 |
Log Po/w (XLOGP3) : | 2.86 |
Log Po/w (WLOGP) : | 3.56 |
Log Po/w (MLOGP) : | 2.98 |
Log Po/w (SILICOS-IT) : | 3.54 |
Consensus Log Po/w : | 3.02 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 1.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -3.66 |
Solubility : | 0.0495 mg/ml ; 0.000219 mol/l |
Class : | Soluble |
Log S (Ali) : | -2.79 |
Solubility : | 0.367 mg/ml ; 0.00162 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -4.84 |
Solubility : | 0.00327 mg/ml ; 0.0000145 mol/l |
Class : | Moderately soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.52 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P301+P312-P302+P352-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H320-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
97% | With sulfuric acid; sodium 3-nitrobenzenesulfonate; at 150℃; for 20h; | Step 1: 8-bromo-6-fluoroquinoline[004541 To a mixture of <strong>[1003-98-1]2-bromo-4-fluoroaniline</strong> (7.00 g, 36.84 mmol), glycerinum (7.00 g, 76.00 mmol) and sodium 3-nitrobenzenesulfonate (12.44 g, 55.30 mmol) was added 70% sulfuric acid (26 mL) slowly. After addition, the reaction mixture was heated to 150C for 20 hours. Then the reaction mixture was cooled to rt, and poured into water, and then adjusted to pH 7 with aqueous sodium hydroxide solution. The resulting mixture was filtered and the filter cake was dissolved in EtOAc. The mixture was stirred at it for a while and filtered. The filtrate was concentrated in vacuo. The crude was purified by silica column chromatography (PE/EtOAc (v/v) = 15/1) to give the title compound as a white solid (8.08 g, 97.0 %). The compound was characterized by the following spectroscopic data:MS(ESI, pos.ion)m/z: 226.0 (M+1), 228.0(M+3); exact mass of C9H5BrFN: 224.96. |
43% | With ferrous(II) sulfate heptahydrate; sodium 3-nitrobenzenesulfonate; In methanesulfonic acid; at 125℃; for 24h; | General procedure: General procedure for synthesis of substituted 8-bromoquinoline (Scheme 3): to a 50 mL roundbottom flask was added 4-substituted 2-bromoaniline, glycerol (17.0 equiv), m-nitrobenzenesulfonatesodium (1.2 equiv), FeSO4?7H2O (0.05 equiv), and MsOH. The reaction mixture was heated at 125 Cfor 24 h. After cooling to room temperature, aqueous NaOH solution (2.5 M) was added to thereaction mixture to adjust pH to 12. Then EtOH was added to form a black solution, which wasextracted with EA or DCM (3 × 100 mL). The combined organic phase was washed with H2O (100mL), brine (100 mL), and dried with anhydrous Na2SO4. After removing the solvents, the residue waspurified by silica gel chromatography. |
Example 2 Intermediate 2-6-fluoro-8-bromo-quinoline To a mixture of 7.0 g of <strong>[1003-98-1]2-bromo-4-fluoro-aniline</strong>, 7.0 g of glycerol and 13.0 g of m-nitrobenzene sulfonic acid sodium salt, 20 ml of 70% sulfuric acid was added drop by drop. The reaction temperature was raised to 150 C. for 4 hr. The mixture was cooled, poured on water neutralized with NaOH and the formed precipitate was filtered to yield 34.7 g of 6-fluoro-8-bromo-quinoline. MS (ES) m/z (relative intensity): 227 (M++H, 100). |
With sulfuric acid; sodium 3-nitrobenzenesulfonate; In water; at 150℃; for 4h; | To a mixture of 7.0 g of <strong>[1003-98-1]2-bromo-4-fluoro-aniline</strong>, 7.0 g of glycerol and 13.0 g of m- nitrobenzene sulfonic. acid sodium salt, 20 ml of 70% sulfuric acid was added drop by drop. The reaction temperature was raised to 150 C for 4 hr. The mixture was cooled, poured on water neutralized with NAOH and the formed precipitate was filtered to yield 34.7 g of 6- FLUORO-8-BROMO-QUINOLINE. MS (ES) m/z (relative intensity): 227 (M++H, 100). | |
To a mixture of <strong>[1003-98-1]2-bromo-4-fluoroaniline</strong> (commercially available, 7.0 g), glycerol (7.0 g) and m-nitrobenzene sulfonic acid sodium salt (13.0 g) was added 20 ml of 70% sulfuric acid dropwise. The reaction temperature was raised to 150 C. for 4 hr. The mixture then was cooled to room temperature, poured on ice water and filtered through celite. The filtrate was neutralized with NaOH and the resulting precipitate was collected by vacuum filtration to yield 3.47 g of the title compound as a light yellow solid; MP=75-78 C.; MS (ES) m/z (relative intensity): 227 (M+H)+ (100). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium t-butanolate;tris-(dibenzylideneacetone)dipalladium(0); tetrakis(triphenylphosphine) palladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In tetrahydrofuran; for 3h;Heating / reflux; | Example 3 Intermediate 3-6-fluoro-8-(t-Boc)-piperazino-quinoline To a mixture of 2.2 g of 6-fluoro-8-bromo-quinoline in THF, was added 0.045 g of Pd2(dba)3, 1.3 g of NaOt-Bu, 0.044 g of binap, 0.052 g of tetrakis(triphenylphosphine) palladium (0) and 2.2 g of t-Boc piperazine. The mixture was refluxed for 3 hours. The reaction mixture was then cooled to room temperature, diluted with ether, filtered through celite and concentrated in vacuo. The crude material was then purified by flash chromatography to give 3.0 g of 6-fluoro-8(t-Boc)-piperazino-quinoline. MS (ES) m/z (relative intensity): 332 (M++H, 100). | |
With 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; sodium t-butanolate;tris-(dibenzylideneacetone)dipalladium(0); tetrakis(triphenylphosphine) palladium(0); In tetrahydrofuran; for 3h;Heating / reflux; | To a mixture of 2.2 g OF 6-FLUORO-8-BROMO-QUINOLINE in THF, was added 0.045 g of Pd2 (dba) 3,1. 3 g of NaOt-Bu, 0.044 g of binap, 0.052 g of tetralcis (triphenylphosphine) palladium (0) and 2.2 g of t-Boc piperazine. The mixture was refluxed for 3 hours. The reaction mixture was then cooled to room temperature, diluted with ether, filtered through celite and concentrated in vacuo. The crude material was then purified by flash chromatography to give 3.0 g of 6-FLUORO-8 (t-Boc) -piperazino-quinoline. MS (ES) M/Z (relative intensity): 332 (M++H, 100). | |
With sodium t-butanolate;tris-(dibenzylideneacetone)dipalladium(0); tetrakis(triphenylphosphine) palladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; In tetrahydrofuran; for 3h;Heating / reflux; | To a mixture of 6-fluoro-8-bromoquinoline (Step 1, 2.2 g) in anhydrous tetrahydrofuran, was added tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3, 0.045 g) sodium tert-butoxide (1.3 g), 2,2'-bis(diphenylphosphino)-1,1'-binapthyl (BINAP, 0.044 g), 0.052 g tetrakis(triphenylphosphine)-palladium (0) (0.052 g) and tert-butoxycarbonyl-piperazine (2.2 g). The mixture was refluxed for 3 hours under a nitrogen atmosphere. The reaction was then cooled to room temperature, diluted with ether, filtered through celite and concentrated on a rotary evaporator. The crude material was purified by flash chromatography using 100% CH2Cl2 to give 3.0 g of the desired product as a brown oil; MS (ES) m/z (relative intensity): 332 (M+H)+ (100). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | -(6-Fluoro- uinolin-8-yl)-ethanoneTo a solution of 6-fluoro-8-bromo-quinoline (1.53 g, 6.8 mmol) in acetonitrile (35 ml_) was added palladium(ll) acetate (0.31 g, 1.36 mmol, 0.2 eq.), butyl vinyl ether (2.04 g, 20 mmol, 3.0 eq.), and 1 ,3-bis(diphenylphosphino)propane (0.70 g, 1.7 mmol, 0.25 eq) was added triethylamine (1.1 g, 11 mmol, 1.6 eq). The resulting mixture was heated to 90 C for 17 hr and then evaporated under reduced pressure. The residue was dissolved in aqueous hydrochloric acid (2M, 15 ml_) and stirred, at room temperature, for 1.5 hr. This mixture was then diluted with water (35 ml_) and the pH adjusted with solid sodium hydrogen carbonate until neutral. The mixture was then extracted with ethyl acetate (100 ml_); the organic phase was dried over over magnesium sulphate. The resulting mixture was filtered and concentrated under reduced pressure to give a brown oil. This crude product was purified by chromatography on silica gel eluting with 10% ethyl acetate in pentane (by volume) to produce the title compound as a pale yellow solid (0.91 g, 71 %).1H NMR (400 MHz, CDCI3): δ ppm 2.96 (s, 3H), 7.48 (dd, 1 H), 7.56 (dd, H), 7.74 (dd, 1 H), 8.16 (dd, 1 H), 8.95 (dd, 1 H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
55% | With hydrogenchloride; In water; at 111℃; for 24h; | General procedure: A 1N HCl solution (82.5 mL) was added to the aniline (~1 mmol) in a round bottom flask. To this was added acrolein diethyl acetal (2.5 mmol). The resulting solution was refluxed at 111 C for 24 hours. After cooling to room temperature, the solution was neutralized (pH 7-8) by addition of solid Na2CO3. The product was then extracted into dichloromethane (3 x 100 mL), and the combined organic layers were dried over Na2SO4 and evaporated under reduced pressure. The crude residue was then purified by column chromatography (elution mixture of hexane with ethyl acetate or 15% ethyl acetate/cyclohexane with methanol) to give the desired quinoline product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
93% | With tris-(dibenzylideneacetone)dipalladium(0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; sodium t-butanolate; In toluene; at 85℃;Schlenk technique; Inert atmosphere; | General procedure: To an oven-dried Schlenk flask were added diamine 3 (1.0 equiv),Pd2(dba)3 (5 mol%), rac-BINAP (10 mol%), NaOtBu (3.0 equiv), and toluene under Ar atmosphere.Then 8-haloqunoline 4 (2.2 equiv) was added directly. The flask was sealed, and the reaction wasstirred at 85 C until the complete consumption of the starting material 3. The mixture was cooled toroom temperature, filtered through a silica plug, and the plug was washed with EA. The combinedfiltrates were concentrated under reduced pressure, and the residue was purified by silica gelchromatography to give the desired product Ln. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 100℃; | The mixture of <strong>[22960-18-5]8-bromo-6-fluoroquinoline</strong> (15.7 g, 69.5 mmol), Zn(CN)2 (4.9 g, 41.7 mmol, 0.8 equiv.) and Pd(PPh3)4 (8 g, 6.9 mmol, 10 % mol) in anhydrous DMF (100 mL) was stirred at 100 C for overnight. Then reaction was cooled to room temperature and diluted with H2O (500 mL). Yellow solid was filtered off, washed with H2O and dried under vacuum. Crude product was used in the next step without further purification. | |
With tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 100℃; | The mixture of <strong>[22960-18-5]8-bromo-6-fluoroquinoline</strong> (15.7 g, 69.5 mmol), Zn(CN)2 (4.9 g, 41.7 mmol, 0.8 equiv.) and Pd(PPh3)4 (8 g, 6.9 mmol, 10 % mol) in anhydrous DMF (100 mL) was stirred at 100 C for overnight. Then reaction was cooled to room temperature and diluted with H2O (500 mL). Yellow solid was filtered off, washed with H2O and dried under vacuum. Crude product was used in the next step without further purification. |