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CAS No. : | 1015460-59-9 | MDL No. : | MFCD18803689 |
Formula : | C11H7BrN2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | JYFKMOCKASWCPZ-UHFFFAOYSA-N |
M.W : | 247.09 | Pubchem ID : | 71079324 |
Synonyms : |
|
Num. heavy atoms : | 14 |
Num. arom. heavy atoms : | 13 |
Fraction Csp3 : | 0.0 |
Num. rotatable bonds : | 0 |
Num. H-bond acceptors : | 1.0 |
Num. H-bond donors : | 1.0 |
Molar Refractivity : | 61.3 |
TPSA : | 28.68 Ų |
GI absorption : | High |
BBB permeant : | Yes |
P-gp substrate : | Yes |
CYP1A2 inhibitor : | Yes |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | Yes |
Log Kp (skin permeation) : | -5.67 cm/s |
Log Po/w (iLOGP) : | 1.88 |
Log Po/w (XLOGP3) : | 3.01 |
Log Po/w (WLOGP) : | 3.48 |
Log Po/w (MLOGP) : | 2.31 |
Log Po/w (SILICOS-IT) : | 3.71 |
Consensus Log Po/w : | 2.88 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | -3.96 |
Solubility : | 0.0274 mg/ml ; 0.000111 mol/l |
Class : | Soluble |
Log S (Ali) : | -3.28 |
Solubility : | 0.131 mg/ml ; 0.000528 mol/l |
Class : | Soluble |
Log S (SILICOS-IT) : | -5.44 |
Solubility : | 0.000889 mg/ml ; 0.0000036 mol/l |
Class : | Moderately soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 1.0 |
Synthetic accessibility : | 1.57 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H317-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 |
---|---|---|
87% | With dmap; In dichloromethane; at 20℃; for 6h; | 990 mg (4.0 mmol) of 7-bromo-5-hydro-pyrido [4,3-b] indole,586 mg (4.8 mmol) of dimethylaminopyridine,1.4 g (6.4 mmol) of di-tert-butyl dicarbonate,Was dissolved in 100 mL of dichloromethane,After 6 h at room temperature, the solvent was removed in vacuo,The solid was isolated by column chromatography to give 1.2 g of pale yellow solid (yield: 87%) |
86% | With dmap; In tetrahydrofuran; at 20℃; for 4h;Inert atmosphere; | A round bottomed flask is charged with <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (15.00 g, 60.7 mmol), di-tert-butyl dicarbonate (19.87 g, 91.1 mmol, 1.5 eq), and dimethylaminopyridine (0.204 g, 1.8 mmol, 0.03 eq). Tetrahydrofuran (550 mL) is added and the resulting brown solution is allowed to stir at room temperature. The reaction is determined to be complete by LCMS after 4 hours. The reaction is concentrated to a brown solid. The solids are triturated in approximately 500 mL hexanes (with stirring), isolated by filtration, washed with hexanes, and then dried under high vacuum to afford the title compound as a dark tan solid (18.03 g, 86%). The material is used in the subsequent step without further purification. 1H NMR (400 MHz, DMSO-d6): delta 9.37 (d, 7=1.2 Hz, 1H), 8.59 (d, Jo=6.0 Hz, 1H), 8.36 (d, 7=1.2 Hz, 1H), 8.19 (dd, 7=8.4 Hz, 7=0.4 Hz, 1H), 7.99 (dd, J,=6.0 Hz, Jm=1.2 Hz, 1H), 7.59 (dd, J,=8.4 Hz, Jm=1.6 Hz, 1H), 1.66 (s, 9H). 13C NMR (100.6 MHz, CDCl3): delta 150.06, 147.46, 143.37, 142.47, 139.07, 127.07, 122.51, 122.71, 121.27, 120.92, 119.67, 110.97, 85.67, 28.24. HRMS: Calc for C16H15N2O2Br (M+H)+ 347.0395, found 347.0400, Err= 1.4 ppm. |
86% | With dmap; In dichloromethane; at 20℃; for 6h;Inert atmosphere; | The mixture of compound 2 (495mg, 2.0mmol), DMAP (293mg, 2.4mmol), and (Boc)2O (698mg, 3.2mmol) in CH2Cl2 (70mL) was stirred at rt for 6h, and then was concentrated to dryness. The solid residue was purified by silica gel chromatography using an eluent (2:98 MeOH/CH2Cl2) to give a white solid product 7 (597mg, 86%). Rf=0.79 (1:12 MeOH/CH2Cl2), mp 156-158C. 1H NMR (CDCl3): delta 1.77 (s, 9H, 3×CH3), 7.53 (dd, J=1.5, 8.0Hz, 1H, Ar-H), 7.89 (d, J=8.0Hz, 1H, Ar-H), 8.08 (d, J=6.0Hz, 1H, Ar-H), 8.54 (d, J=0.5Hz, 1H, Ar-H), 8.64 (d, J=6.0Hz, 1H, Ar-H), 9.23 (d, J=1.0Hz, 1H, Ar-H). MS (ESI): 347 ([M+H]+, 100%).(i). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
59% | Step 3: 7-(6-Fluoropyridin-3-yl)-5H-pyrido[4,3-b]indole A mixture of <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (400 mg, 1.63 mmol), (6-fluoropyridin-3-yl)boronic acid (344 mg, 2.44 mmol), PdCl2(dppf) (120 mg, 0.163 mmol), tBu3PHBF4 (95 mg, 0.326 mmol) and Cs2CO3 (1.1 g, 3.26 mmol) in dioxane/water (20 mL, 20:1) was heated to 90 C. for 4 hours under N2. The solid was filtered and the filtrate was evaporated. The residue was purified by chromatography (silica gel, 200-300 mesh, CH2Cl2: MeOH=30:1) to afford 7-(6-Fluoropyridin-3-yl)-5H-pyrido[4,3-b]indole (250 mg, 59% yield). | |
53% | With palladium diacetate; potassium carbonate; CyJohnPhos; In 1,2-dimethoxyethane; water; for 48h;Reflux; | Palladium(II) acetate (18mg, 0.08mmol) was added to a solution containing compound 2 (198mg, 0.8mmol), (6-fluoropyridin-3-yl)boronic acid (158mg, 1.12mmol), dicyclohexylphosphinobiphenyl (30.8mg, 0.088mmol) and K2CO3 (332mg, 2.4mmol) in DME (50mL) and water (6mL). The reaction mixture was refluxed for 48h, cooled down to room temperature (rt), diluted with water and extracted with ethyl acetate (50mL×3). The combined organic extracts were washed with brine, dried over MgSO4 and concentrated in reduced pressure. The residue was purified by silica gel chromatography using an eluent (2:98 MeOH/CH2Cl2) to obtain a white solid product 3 (112mg, 53%). Rf=0.33 (1:12 MeOH/CH2Cl2), mp >300C. 1H NMR (acetone-d6): delta 7.20 (ddd, J=0.5, 3.5, 8.5Hz, 1H, Ar-H), 7.50 (dd, J=0.8, 6.0Hz, 1H, Ar-H), 7.61 (dd, J=1.5, 8.0Hz, 1H, Ar-H), 7.89 (d, J=1.0Hz, 1H, Ar-H), 8.30-8.33 (m, 1H, Ar-H), 8.35 (d, J=8.0Hz, 1H, Ar-H), 8.47 (d, J=5.0Hz, 1H, Ar-H), 8.58 (dd, J=0.5, 2.0Hz, 1H, Ar-H), 9.39 (s, 1H, Ar-H), 10.95 (br s, 1H, NH). MS (ESI): 264 ([M+H]+, 100%). MS (ESI): 262 ([M-H]-, 20%).( |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | With triethyl phosphite; at 110℃; for 3h;Inert atmosphere; | 1.68 g of 3- (4-bromobenzene) -4-nitropyridineDissolved in 60mLTriethyl phosphite,Under nitrogen protection, heating at 110 for 3h,cool down,The triethyl phosphite was removed under reduced pressure,The resulting solid was separated by column chromatography,To give 1.05 g of brown-yellow solid (yield: 71%). |
70% | With triethyl phosphite; at 110℃; for 3h;Inert atmosphere; | A solution of compound 1 (0.84g, 3.0mmol) in 30mL of triethyl phosphate was heated at 110C for 3h under N2. The reaction was monitored with TLC for every 1h. After the starting material was disappeared, the reaction mixture was cooled down, and volatiles were removed in vacuo. The residue was purified by silica gel chromatography using an eluent (2:98 MeOH/CH2Cl2) to give a light brown color solid product 2 (0.52g, 70%). Rf=0.48 (1:12 MeOH/CH2Cl2), mp 258-260C (dec.). 1H NMR (DMSO-d6): delta 7.42 (dd, J=2.0, 8.5Hz, 1H, Ar-H), 7.49 (dd, J=1.0, 5.5Hz, 1H, Ar-H), 7.76 (d, J=2.0Hz, 1H, Ar-H), 8.1 (d, J=8.5Hz, 1H, Ar-H), 8.4 (d, J=5.5Hz, 1H, Ar-H), 9.36 (s, 1H, Ar-H), 11.82 (s, 1H, NH). MS (ESI): 247 ([M+H]+, 100%). |
62% | Step 2: 7-bromo-5H-pyrido[4,3-b]indole A mixture of 3-(4-bromophenyl)-4-nitropyridine (20.0 g, 71.7 mmol) in triethyl phosphate (400 ml) was stirred at 110 C. for 2 hours under nitrogen atmosphere. TLC showed the reaction was complete. The volatiles were evaporated under reduced pressure to give a residue which was purified by recrystallization (methanol) to afford 7-bromo-5H-pyrido[4,3-b]indole (11.0 g, yield 62%) as brown solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
26% | With tetrakis(triphenylphosphine) palladium(0); caesium carbonate; In 1,4-dioxane; at 100℃; for 20h;Inert atmosphere; | Method B (from 4): A mixture of compound 2 (99mg, 0.4mmol), 4 (184mg, 0.64mmol), Pd(PPh3)4 (46mg, 0.04mmol), and Cs2CO3 (391mg, 1.2mmol) in 1,4-dioxane (100mL) was stirred at 100C under N2 atmosphere for 20h. After cooling to RT, the volatiles were removed under reduced pressure. The residue was purified by silica gel chromatography using an eluent (3:97 MeOH/CH2Cl2) to obtain a yellow solid product 5 (30mg, 26%). Analytical data was identical with Method A. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
7% | With tetrakis(triphenylphosphine) palladium(0); caesium carbonate; In 1,4-dioxane; at 100℃; for 20h;Inert atmosphere; | Method A: A mixture of compound 2 (99mg, 0.4mmol), 2-nitro-5-pyridineboronic acid pinacol ester (160mg, 0.64mmol), Pd(PPh3)4 (46mg, 0.04mmol), and Cs2CO3 (391mg, 1.2mmol) in 1,4-dioxane (100mL) was stirred at 100C under N2 atmosphere for 20h. After cooling to RT, the volatiles were removed under reduced pressure. The residue was purified by silica gel chromatography using an eluent (3:97 MeOH/CH2Cl2) to afford a yellow solid product 5 (8mg, 7%). Rf=0.32 (1:12 MeOH/CH2Cl2), mp >300C. 1H NMR (DMSO-d6): delta 7.52 (d, J=5.5Hz, 1H, Ar-H), 7.76 (dd, J=1.5, 8.0Hz, 1H, Ar-H), 7.98-8.04 (m, 1H, Ar-H), 8.42-8.47 (m, 3H, Ar-H), 8.61 (dd, J=2.5, 8.5Hz, 1H, Ar-H), 9.12 (d, J=2.0Hz, 1H, Ar-H), 9.42 (s, 1H, Ar-H), 11.96 (s, 1H, NH). MS (ESI): 291 ([M+H]+, 100%). MS (ESI): 289 ([M-H]-, 40%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
69% | Preparative Example 23 (0778) (0779) Step A (0780) To a solution of custom made <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (0.49 g, 1.98 mmol) in N,N?-dimethylformamide (5 mL) was added cesium carbonate (0.32 g, 0.99 mmol) and the mixture was stirred at room temperature for 10 minutes and dimethylcarbonate was added dropwise (334 muL, 3.96 mmol). The reaction mixture was heated at 160 C. for 3 hours and after cooling, water (20 mL) and ethyl acetate (20 mL) were added to the mixture. The phases were separated and the aqueous phase was extracted with ethyl acetate (2×20 mL). The organic phases were combined and dried over Na2SO4. The solvent was removed under reduced pressure and the residue was purified on a HP-Sil column using a Biotage Isolera One purification system employing a dichloromethane/methanol gradient (100/0->90/10) to afford the crude title compound (0.36 g, 69%). (0781) 1H NMR (400 MHz, DMSO-d6) delta=9.36 (s, 1H), 8.52 (d, 1H), 8.21 (d, 1H), 7.95 (d, 1H), 7.62 (d, 1H), 7.45 (dd, 1H), 3.88 (s, 3H). (0782) MS (ESI): m/z=263.95 [M+H]+. | |
To a solution of custom made 7-bromo-5H-pyrido[4,3-£>]indole (0.49 g, 1.98 mmol) in Lambda/,Lambda/'- dimethylformamide (5 mL) was added cesium carbonate (0.32 g, 0.99 mmol) and the mixture was stirred at room temperature for 10 minutes and dimethylcarbonate was added dropwise (334 mu, 3.96 mmol). The reaction mixture was heated at 160C for 3 hours and after cooling, water (20 mL) and ethyl acetate (20 mL) were added to the mixture. The phases were separated and the aqueous phase was extracted with ethyl acetate (2 X 20 mL). The organic phases were combined and dried over Na2S04. The solvent was removed under reduced pressure and the residue was purified on a HP-Sil column using a Biotage Isolera One purification system employing a dichloromethane/methanol gradient (100/0 -> 90/10) to afford the crude title compound (0.36 g, 69 %). 1H NMR (400 MHz, DMSO-cf6) delta = 9.36 (s, 1 H), 8.52 (d, 1 H), 8.21 (d, 1 H), 7.95 (d, 1 H), 7.62 (d, 1 H), 7.45 (dd, 1 H), 3.88 (s, 3H) MS (ESI): m/z = 263.95 [M+H]+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | In mineral oil; | Step 4: 7-bromo-5-methyl-5H-pyrido[4,3-b]indole] To a solution of <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (8.0 g, 32.4 mmol) in N,N-dimethylformamide (50 ml) was added sodium hydride (1.4 g, 35.6 mmol, 60% in mineral oil) at 0 C., and the reaction mixture was stirred at 0 C. for 30 minutes. To the resulting mixture was added iodomethane (4.6 g, 32.4 mmol) at 0 C., and the reaction mixture was allowed to warm up to room temperature and stirred overnight. TLC showed the reaction was complete. The reaction mixture was quenched with water (30 ml) at 0 C., and extracted with ethyl acetate (50 ml*2). The combined organic layers were washed with water (80 ml) then brine (90 ml), dried over anhydrous sodium sulfate, and concentrated under reduced pressure to give a crude residue which was purified by silica gel flash chromatography (eluted with 20-40% ethyl acetate in hexane) to afford 7-bromo-5-methyl-5H-pyrido[4,3-b]indole (6.0 g, yield 71%) as brown solid. Using procedures described above for the Exemplary Compound 61, 5-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)oxy)pentanal was converted into the title compound, 3-(5-((5-(4-(3-(5-(5-methyl-5H-pyrido[4,3-b]indol-7-yl)pyridin-2-yl)propyl)piperazin-1-yl)pentyl)oxy)-1-oxoisoindolin-2-yl)piperidine-2,6-dione according to the scheme below. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
50.0% | Step 7: 3-(5-(5H-pyrido[4,3-b]indol-7-yl)pyridin-2-yl)prop-2-yn-1-ol To the mixture of <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (50 mg, 0.20 mmol) and (6-(3-Hydroxyprop-1-yn-1-yl)pyridin-3-yl)boronic acid (53 mg, 0.30 mmol) in dioxane (10 mL) and water (1.0 mL) were added PdCl2(dppf) (29 mg, 0.04 mmol), Cs2CO3 (130 mg, 0.40 mmol) and tBu3PHBF4 (23 mg, 0.08 mmol). The mixture was stirred at 100 C. for 3 hours under N2 atmosphere. After cooling to room temperature, the reaction was quenched with water (3 mL), and the mixture was extracted with EtOAc (20 ml*3). The combined organic layers were washed with brine, dried (Na2SO4), filtered and concentrated under reduced pressure. The residue was purified on silica gel column (MeOH:DCM=1:20-1:10) to give the desired compound (30 mg, 0.10 mmol, yield: 50.0%) as a yellow solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Step 1: Benzyl 4-(5H-pyrido[4,3-b]indol-7-yl)-3,6-dihydropyridine-1(2H)-carboxylate A mixture of <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (492 mg, 2 mmol), benzyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,6-dihydropyridine-1(2H)-carboxylate (755 mg, 2.2 mmol), Pd(aMphose)Cl2 (146 mg, 0.2 mmol) and CsF (1.2 g, 8 mmol) in dioxane/H2O (20 mL/2 mL) was stirred at 90 C. for 16 hours. After cooling to room temperature, the reaction was quenched by the addition of water (30 mL). The mixture was extracted with ethyl acetate (20 mL*3). The combined organic layers were washed with brine (20 mL*2), dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was applied onto a silica gel column eluting with dichloromethane/methanol to afford 260 mg (0.68 mmol, 34%) of the desired product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
36% | With tetrakis(triphenylphosphine) palladium(0); | Step 3: tert-butyl 17-((5-(5H-pyrido[4,3-b]indol-7-yl)pyridin-2-yl)oxy)-3,6,9,12,15-pentaoxaheptadecan-1-oate To a stirred solution of <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (300 mg, 1.22 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane) (620 mg, 2.44 mmol), and potassium acetate (239 mg, 2.44 mmol) in dioxane (5 ml) was added 1,1'-Bis(diphenylphosphino)ferrocene palladium(II)dichloride (176 mg, 0.24 mmol) at room temperature under nitrogen atmosphere, the mixture was degassed with nitrogen three times. The result mixture was stirred at 90° C. overnight. LCMS showed the reaction was complete. To the reaction mixture were added 14-((5-bromopyridin-2-yl)oxy)-3,6,9,12-tetraoxatetradecan-1-ol (930 mg, 1.83 mmol), aqueous sodium carbonate solution (2N, 3.2 ml) and tetrakis(triphenylphosphine)palladium (70 mg, 0.06 mmol); the mixture was degassed with nitrogen three times. The resulting mixture was stirred at 80° C. for 3 hours under nitrogen atmosphere. The reaction mixture was partitioned between ethyl acetate (30 ml) and water (20 ml). The organic layer was collected and the aqueous layer was extracted with ethyl acetate (20 ml). The combined organic layers were washed with brine (30 ml), dried over anhydrous sodium sulfate, and concentrated under reduced pressure to give a crude residue which was purified by silica gel flash chromatography (eluted with 2percent methanol in dichloromethane) to afford tert-butyl 17-((5-(5H-pyrido[4,3-b]indol-7-yl)pyridin-2-yl)oxy)-3,6,9,12,15-pentaoxaheptadecan-1-oate (260 mg, yield 36percent) as grey oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | With potassium carbonate; | Step 8: tert-butyl 4-((1r,3r)-3-((5-(5H-pyrido[4,3-b]indol-7-yl)pyridin-2-yl)oxy)cyclobutoxy)piperidine-1-carboxylate To a solution of tert-butyl 4-[3-[[5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-pyridyl]oxy]cyclobutoxy]piperidine-1-carboxylate (240 mg, 0.50 mmol, 1 eq), <strong>[1015460-59-9]7-bromo-5H-pyrido[4,3-b]indole</strong> (125 mg, 0.50 mmol, 1 eq) and potassium carbonate (140 mg, 1.01 mmol, 2 eq) in a mixture of dimethylformamide (8 mL) and water (2 mL) was added [1,1'-bis(diphenylphosphino)ferrocene]dichloropalladium(II) (37 mg, 0.05 mmol, 0.1 eq). The mixture was degassed in vacuum and purged with nitrogen three times. The mixture was stirred at 100 C. for 3 hours. The mixture was poured into 50 mL saturated brine, and then extracted with ethyl acetate (50 mL*2). The combined organic layer was washed with brine (50 mL*3), dried over anhydrous sodium sulfate, filtered and concentrated in vacuum. The residue was purified by preparative thin layer chromatography (dichloromethane:methanol=20:1). Tert-butyl 4-[3-[[5-(5H-pyrido[4,3-b]indol-7-yl)-2-pyridyl]oxy]cyclobutoxy]piperidine-1-carboxylate (175 mg, 0.34 mmol, 67% yield) as an off-white solid was obtained. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
80% | With tri-tert-butyl phosphine; palladium diacetate; sodium t-butanolate; In toluene; for 2h;Reflux; | Tri-tert-butylphosphine (4.4 mL of a 1.0 M solution in toluene, 1.48 g, 0.05 mmol), palladium acetate (0.4 g, 1.83 mmol) and sodium tert-butoxide (22.8 g, 238 mmol) were added to 7-bromo-5H-pyrido[4,3-B]indole (45.2 g, 183 mmol) and iodobenzene (37.7 g, 185 mmol) in degassed toluene (1 L), and the mixture was heated under reflux for 2 hr. The reaction mixture was cooled to room temperature, diluted with toluene and filtered over EtOAc. The filtrate was diluted with water and extracted with toluene and the organic phases were combined and evaporated in vacuo. The residue was filtered through silica gel and recrystallized. Intermediate A1-1 (47.2 g, yield 80%) was obtained |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
51% | With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium hydrogencarbonate; In acetonitrile; at 90℃; for 0.5h; | Compound P (500 mg, 2.02 mmol), compound Q (655 mg, 2.23 mmol), NaHC03 (510 mg, 6.06 mmol), and Pd(dppf)2Cl2 (70 mg) in MeCN and H20 (4:1, 10 mL) were stirred at 90 C for 30 min. The reaction mixture was cooled to r.t., diluted with H20 (50 mL), and extracted with DCM (3 x 100 mL). The organics were combined and concentrated in vacuo. The resulting solid was washed with cold DCM (3 mL) to afford compound R as a white powder, which was used without further purification (340 mg, 1.02 mmol, 51 %). MS (ESI) m/z 334 (M+H)+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a solution of the mixture of regioisomers from Step A above (1.1 g, 4.4 mmol) in xylene (20 mL) was added manganese(IV)-oxide (3.80 g, 40 mmol). The mixture was stirred at 110 C (internal temperature) overnight. The solid material (Mn02) was filtered off through a paper filter, and the solvents were removed under reduced pressure. The residue was purified on HP-Sil cartridges, by employing a dichloromethane/methanol gradient (100/0 -> 90/10) to obtain a mixture of regioisomers (0.47 g, 43%) (0148) MS (ESI): m/z = 247.19/249.18 [M+H]+ |
Yield | Reaction Conditions | Operation in experiment |
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Stage #1: 7-bromo-5H-pyrido[4,3-b]indole With tris-(dibenzylideneacetone)dipalladium(0); anhydrous potassium acetate; 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane; dicyclohexyl [2’,4’,6’-tris(propan-2-yl)-[1,1‘-biphenyl]-2-yl]phosphane In 1,4-dioxane at 110℃; for 3h; Inert atmosphere; Stage #2: 2-fluoro-5-chloropyridine With tripotassium phosphate tribasic In trans-1,3-dioxane; lithium hydroxide monohydrate at 110℃; for 6h; Inert atmosphere; | 1.3; 2.3 7-Bromo-5H-pyridine[4,3-b]indole (2.47g, 10mmol),Biboronate pinacol ester (BPIN, 5.1 g, 20 mmol),Potassium acetate (1.96 g, 20 mmol),Tris(dibenzylidene-BASE acetone)dipalladium(0)(Pd2dba3, 91.5mg, 0.1mmol),2-Dicyclohexylphosphine-2',4',6'-triisopropylbiphenyl (X-PHOS, 0.19g, 0.4mmol) and 40mL dioxane, under the protection of N2, refluxed at 110 °C for reaction 3h,TLC monitoring reaction is complete;After the reaction was over, 5-chloro-2-fluoropyridine (1.31 g, 10 mmol) was added via syringeDioxane (10mL) solution and 10mL concentration of 5mol/LK3PO4 aqueous solution was added to the obtained reaction system, and the reaction was refluxed at 110 ° C for 6 h.TLC monitoring reaction is complete;After the reaction, the obtained product system was cooled and the dioxane was removed under reduced pressure. The residue was washed 3 times with distilled water, and then extracted with dichloromethane 3 times (30 mL×3), and the organic phase obtained from the extraction was dried with anhydrous magnesium sulfate. , the desiccant was filtered off, the obtained filtrate was distilled under reduced pressure to recover dichloromethane, and the residue was recrystallized with a methanol-dichloromethane mixed solvent (the volume ratio of methanol and dichloromethane was 2:8),The obtained white solid was compound T807, the yield was 2.47 g, and the purity was 99.3%,The yield was 93.8%; the total yield of step (1), step (2) and step (3) was 73.2%. |
Tags: 1015460-59-9 synthesis path| 1015460-59-9 SDS| 1015460-59-9 COA| 1015460-59-9 purity| 1015460-59-9 application| 1015460-59-9 NMR| 1015460-59-9 COA| 1015460-59-9 structure
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