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CAS No. : | 400777-00-6 | MDL No. : | MFCD11977418 |
Formula : | C10H12ClIN2O2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | YCBOUHLCYYKTFG-UHFFFAOYSA-N |
M.W : | 354.57 | Pubchem ID : | 53415320 |
Synonyms : |
|
Num. heavy atoms : | 16 |
Num. arom. heavy atoms : | 6 |
Fraction Csp3 : | 0.4 |
Num. rotatable bonds : | 4 |
Num. H-bond acceptors : | 3.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 72.21 |
TPSA : | 51.22 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | No |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | Yes |
CYP2C9 inhibitor : | Yes |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -6.31 cm/s |
Log Po/w (iLOGP) : | 2.83 |
Log Po/w (XLOGP3) : | 3.03 |
Log Po/w (WLOGP) : | 3.5 |
Log Po/w (MLOGP) : | 2.22 |
Log Po/w (SILICOS-IT) : | 2.78 |
Consensus Log Po/w : | 2.87 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -3.96 |
Solubility : | 0.0388 mg/ml ; 0.000109 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.77 |
Solubility : | 0.0601 mg/ml ; 0.000169 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -4.5 |
Solubility : | 0.0112 mg/ml ; 0.0000316 mol/l |
Class : | Moderately soluble |
PAINS : | 0.0 alert |
Brenk : | 2.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 2.61 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-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 |
---|---|---|
93% | Stage #1: at 60℃; for 12 h; Stage #2: With sodium hydrogencarbonate In water at 20℃; Saturated solution |
Step c: 6-chloro-4-iodopyridin-3-amine The solution of tert-butyl 6-chloro-4-iodopyridin-3-ylcarbamate (10.0 g, 28 mmol) in 3M HCl (600 mL) was heated at 60° C. for 12 h. The mixture was allowed to cool to room temperature and treated with sat. NaHCO3 to pH=8. The aqueous layer was extracted with ethyl acetate (100 mL*3). The combined organic layers were washed with brine, dried over anhydrous Na2SO4, concentrated and purified by chromatography on silica gel (10percent ethyl acetate in petroleum ether as eluant) to afford 6-chloro-4-iodopyridin-3-amine (6.6 g, 93percent). 1H-NMR (CDCl3, 400 MHz) δ 7.81 (s, 1H), 7.60 (s, 1H), 4.13 (br s, 2H). |
90% | Stage #1: With trifluoroacetic acid In dichloromethane at 20℃; for 2 h; Stage #2: With sodium hydroxide In water |
(6-Chloro-4-iodo-pyridin-3-yl)-carbamic acid tert-butyl ester (3.67 g, 10.3 mmol) was dissolved in DCM (32 mL) and TFA (8 mL) was added. The reaction mixture was stirred at ambient temperature for 2 h and then evaporated in vacuo. The resultant residue was treated with 5N aqueous sodium hydroxide solution (25 mL), diluted with water (100 mL) and extracted into ethyl acetate (2 x 100 mL). The combined organic layer was dried over anhydrous sodium sulfate, filtered and evaporated in vacuo to afford the title compound as yellow solid (2.37 g, 90percent). 1H NMR (CD3OD, 300MHz): 7.80 (s, 1H), 7.60 (s, 1H), 4.14 (s, 2H). LCMS (Method B): RT = 3.00 min, M+H+ = 255. |
82% | With trifluoroacetic acid In dichloromethane; ethyl acetate | 6-Chloro-4-iodo-3-pyridinamine Trifluoroacetic acid (2.4 mL) was added to a solution of 1,1-dimethylethyl (6-chloro-4-iodo-3-pyridinyl)carbamate (Description 7, 2.2 g, 6.2 mmol) in dichloromethane (50 mL) and the mixture was stirred at room temperature for 24 h. The solvent was evaporated under reduced pressure and the residue was dissolved in ethyl acetate. The mixture was washed with aqueous sodium hydroxide (1M), dried (MgSO4) and the solvent was evaporated under reduced pressure. The residue was purified by flash column chromatography on silica gel, eluding with isohexane/EtOAc (70:30), to give the title compound as a yellow solid (1.3 g, 82percent). 1H NMR (360 MHz, CDCl3) δ 7.80 (1H, s), 7.60 (1H, s), and 4.13 (2H, br s). m/z (ES+) 255, 257 (M+1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
33% | Stage #1: With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In tetrahydrofuran at -78℃; Stage #2: With iodine In tetrahydrofuran at -78℃; |
Step b: tert-Butyl 6-chloro-4-iodopyridin-3-ylcarbamate To a solution of TMEDA (25.4 g, 219.3 mmol) in dry THF (300 mL) was added dropwise n-BuLi (87.7 mL, 219.3 mmol) at -78° C., the mixture was stirred for 0.5 h at this temperature. A solution of tert-butyl 6-chloropyridin-3-yl-carbamate (20 g, 87.7 mmol) in THF (170 mL) was added dropwise to the reaction mixture at -78° C. and the resulting mixture was continued to stir for 1 h at -78° C. Then a solution of I2 (26.7 g, 105.3 mmol) in dry THF (170 mL) was added dropwise at -78° C. After 1 h, the reaction was quenched with sat. aqueous NH4Cl (300 mL). The organic layer was separated and the aqueous phase was extracted with EtOAc (150 mL*3). The combined organic layers were dried over anhydrous Na2SO4 and concentrated under reduced pressure to yield a residue that was purified by column chromatography on silica gel (petroleum ether/ethyl acetate, 10/1) to give tert-butyl 6-chloro-4-iodopyridin-3-ylcarbamate (10.0 g, 33percent). 1H-NMR (CDCl3, 400 MHz) δ 8.95 (s, 1H), 7.73 (s, 1H), 6.64 (br s, 1H), 1.53 (s, 9H). |
32.3% | Stage #1: With n-butyllithium In tetrahydrofuran at -78℃; for 0.5 h; Inert atmosphere Stage #2: With iodine In tetrahydrofuran at -78℃; for 4 h; |
Step 2 To the solution of tert-butyl (6-chloropyridin-3-yl)carbamate (160 g, 0.7 mol) in 1 L of anhydrous THF was added n-BuLi (600 mL, 1.5 mol) at -78° C. under N2 atmosphere. After the addition was finished, the solution was stirred at -78° C. for 30 min, and the solution of I2 (177.68 g, 0.7 mol) in 800 mL of anhydrous THF was added. Then the solution was stirred at -78° C. for 4 hrs. TLC indicated the reaction was over. Water was added for quench, and EtOAc was added to extract twice. The combined organic phases were washed with brine, dried over Na2SO4, filtered and purified by flash chromatography to afford 80 g of tert-butyl (6-chloro-4-iodopyridin-3-yl)carbamate as a yellow solid (32.3percent). |
32.3% | Stage #1: With n-butyllithium In tetrahydrofuran at -78℃; for 0.5 h; Inert atmosphere Stage #2: With iodine In tetrahydrofuran at -78℃; for 4 h; |
Step 2: (0190) To the solution of tert-butyl(6-chloropyridin-3-yl)carbamate (160 g, 0.7 mol) in 1 L of anhydrous THF was added n-BuLi (600 mL, 1.5 mol) at −78° C. under N2 atmosphere. After the addition was finished, the solution was stirred at −78° C. for 30 min, and the solution of I2 (177.68 g, 0.7 mol) in 800 mL of anhydrous THF was added. Then the solution was stirred at −78° C. for 4 hrs. TLC indicated the reaction was over. Water was added for quench, and EtOAc was added to extract twice. The combined organic phases were washed with brine, dried over Na2SO4, filtered and purified by flash chromatography to afford 80 g of tert-butyl(6-chloro-4-iodopyridin-3-yl)carbamate as a yellow solid (32.3percent). |
32.3% | Stage #1: With n-butyllithium In tetrahydrofuran at -78℃; for 0.5 h; Inert atmosphere Stage #2: With iodine In tetrahydrofuran at -78℃; for 4 h; |
To the solution of tert-butyl (6-chloropyridin-3-yl)carbamate (160 g, 0.7 mol) in 1 L of anhydrous THF was added n-BuLi (600 mL, 1.5 mol) at −78° C. under N2atmosphere. After the addition was finished, the solution was stirred at −78° C. for 30 min, and the solution of I2(177.68 g, 0.7 mol) in 800 mL of anhydrous THF was added. Then the solution was stirred at −78° C. for 4 hrs. TLC indicated the reaction was over. Water was added for quench, and EtOAc was added to extract twice. The combined organic phases were washed with brine, dried over Na2SO4, filtered and purified by flash chromatography to afford 80 g of tert-butyl (6-chloro-4-iodopyridin-3-yl)carbamate as a yellow solid (32.3percent). |
2.59 g | Stage #1: With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In tetrahydrofuran; diethyl ether at -10℃; for 2 h; Inert atmosphere Stage #2: With iodine In tetrahydrofuran; diethyl ether at -78 - 20℃; for 24 h; Inert atmosphere |
Under argon gas atmosphere, to diethyl ether (120mL)solution of (6-chloropyridin-3-yl) carbamic acid tert- butyl (5.0 g) and N, N,N ', N'- tetramethyl ethane-1,2-diamine (7.7 g), at -78 n-butyl lithium solution (2.65mol / L tetrahydrofuran solution, 25mL) was addeddropwise. after stirring the mixture for 2 hours at -10 , diethyl ether (40mL) solution of iodine (11.4g) wasdropped at -78 , and the mixture was stirred one day at roomtemperature. To the reaction mixture, a saturated aqueous ammonium chloridesolution was added, and extracted with diethyl ether. The organic layer was washed with 10percentaqueous solution of sodium pyrosulfite and saturated brine, dried overanhydrous magnesium sulfate, and evaporated under reduced pressure. Theresulting crude product was purified by silica gel column chromatography (eluting solvent: n- hexane / ethyl acetate = 100 / 0 ~60 / 40) to give the title compound (2.59 g). |
2.59 g | Stage #1: With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In diethyl ether; hexane at -78 - -10℃; for 2 h; Inert atmosphere Stage #2: With iodine In diethyl ether; hexane at -78 - 20℃; for 24 h; |
To a solution of (6-chloropyridin-3-yl)carbamic acid tert-butyl ester(5.0 g) at -78 ° C and N, N, N ', N'-tetramethylethane-1,2-diamine (7.7 g) of diethyl ether (120 mL) after the drop of the solution was stirred at 10° C for 2 hours, iodine (11.4 g) was added dropwise at -78 ° C, of diethyl ether (40 mL) solution. The mixture was stirred at room temperature for one day. To the reaction mixture was added a saturated aqueous ammonium chloride solution, and extracted with diethyl ether. The organic layer was washed with 10percent aqueous sodium metabisulfite solution, after washing with saturated saline, and then dried over anhydrous magnesium sulfate, and distilled off under reduced pressure. The obtained crude product was purified by silica gel column chromatography (elution solvent; n-hexane-ethyl acetate) to give the title compound (2.59 g). |
2.59 g | Stage #1: With n-butyllithium; N,N,N,N,-tetramethylethylenediamine In diethyl ether; hexane at -78 - -10℃; for 2 h; Inert atmosphere Stage #2: With iodine In diethyl ether; hexane at -78 - 20℃; for 24 h; Inert atmosphere |
Reference Example 4 (0080) (6-Chloro-4-iodopyridin-3-yl)cathamic acid tert-butyl ester (0081) To a solution of (6-chloropyridin-3-yl)cathamic acid tert-butyl ester (5.0 g) and N,N,N′,N-tetramethylethane-1,2-diamine (7.7 g) in diethyl ether (120 mL) was added dropwise n-buthyllithium (2.65 mol/L n-hexane solution, 25 mL) at −78° C. under an argon gas atmosphere. After the mixture was stirred at −10° C. for 2 hours, a solution of iodine (11.4 g) in diethyl ether (40 mL) was added dropwise at −78° C. The resulting mixture was stirred at room temperature for 1 day. To the reaction mixture was added a saturated aqueous ammonium chloride solution, and the resulting mixture was extracted with diethyl ether. The organic layer was washed with 10percent aqueous sodium pyrosulfite and brine, and dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. The obtained crude product was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate) to give the title compound (2.59 g). |
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