Structure of 24134-09-6
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CAS No. : | 24134-09-6 |
Formula : | C5H7BrN2 |
M.W : | 175.03 |
SMILES Code : | CC1=NC=C(Br)N1C |
MDL No. : | MFCD06659905 |
InChI Key : | WIRCWIXZNDCIST-UHFFFAOYSA-N |
Pubchem ID : | 7204879 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P280-P305+P351+P338-P310 |
Num. heavy atoms | 8 |
Num. arom. heavy atoms | 5 |
Fraction Csp3 | 0.4 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 1.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 36.15 |
TPSA ? Topological Polar Surface Area: Calculated from |
17.82 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.68 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.0 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.49 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.77 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.48 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.28 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.02 |
Solubility | 1.68 mg/ml ; 0.0096 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-0.96 |
Solubility | 19.1 mg/ml ; 0.109 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.03 |
Solubility | 1.62 mg/ml ; 0.00927 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
Yes |
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
No |
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-6.66 cm/s |
Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
Ghose? Ghose filter: implemented from |
None |
Veber? Veber (GSK) filter: implemented from |
0.0 |
Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.55 |
PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
Brenk? Structural Alert: implemented from |
0.0 alert: heavy_metal |
Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.93 |
* 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 N-Bromosuccinimide; In dichloromethane; at 0℃; for 2h; | A mixture of 1,2-dimethyl-1H-imidazole (2.80 g, 29.1 mmol) and NBS (5.40 g, 30.3 mmol) in dichloromethane (100 mL) was stirred for 2 hours at 0 C. and diluted with 100 mL of dichloromethane. The mixture was washed with 3×200 mL of H2O, dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum. The residue was purified by flash column chromatography (silica gel column, 10:1 CH2Cl2/MeOH) to give the title compound as a pink solid. | |
3.78 g | With N-Bromosuccinimide; In N,N-dimethyl-formamide; at 25℃; for 3h;Inert atmosphere; | To a solution of 1,2-dimethyl-1H-imidazole (1a) (96 mg, 1 mmol) in DMF (5 mL), was added NBS (169 mg, 0,95 mmol) and the resulting reaction mixture was stirred in the dark at room temperature for 3 h. The orange-yellowish solution thus obtained was diluted with EtOAc (50 mL), washed with a 10% aqueous solution of NaOH (2 x 50 mL), water (50 mL) and brine (50 mL). The aqueous phases were back-extracted with EtOAc (50 mL) and the combined organic phases dried over Na2SO4 and filtered. The solvent was removed at reduced pressure, affording the title compound as colorless crystals (3.78 g, 76%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate; In N,N-dimethyl-formamide; at 20℃; | To a solution of 4-bromo-2-methyl-1 H-imidazole (2 g, 12.42 mmol) in N, N- dimethylformamide (10 ml.) was added potassium carbonate (3.78 g, 27.3 mmol) followed by methyl iodide (0.928 ml_, 14.91 mmol). The reaction mixture was stirred at room temperature overnight and then partitioned between dichloromethane and water and the layers separated. The aqueous layer was extracted with dichloromethane (x2) and the organic layers were combined and concentrated, azeotroping with toluene to give a mixture of the title compounds. 1H NMR delta (MeOH-d4): Major isomer: 2.31 (3H, s), 3.58 (3H, s), 6.97 (1 H, s). Minor isomer: 2.38 (3H, s), 3.55 (3H, s), 6.82 (1 H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium carbonate;bis-triphenylphosphine-palladium(II) chloride; In ethanol; toluene;Heating / reflux; | A mixture of {3-chloro-5-[(methyloxy)carbonyl]phenyl}boronic acid (1.703 g, 7.94 mmol), 4-bromo-1 ,2-dimethyl-1 H-imidazole (D37a, 1.1 12 g, 6.35 mmol) and 5- bromo-1 ,2-dimethyl-1 H-imidazole (D37b, 222 mg, 1.271 mmol) as an isomeric mixture, sodium carbonate (1.347 g, 12.71 mmol) and bis(triphenylphosphine)palladium(ll) dichloride (446 mg, 0.635 mmol) in toluene (10 ml.) and ethanol (1 ml.) was stirred under reflux overnight. The reaction mixture was partitioned between dichloromethane and water and the layers separated. The aqueous layer was extracted with dichloromethane (x2) and the combined organic layers were dried (magnesium sulfate) and concentrated. The residue was acidified and purified using SCX chromatography, eluting with methanol then 2N ammonia in methanol. The basic fractions were combined and concentrated to leave the crude mixture of title compounds which was used without further purification. LC/MS (ES+ve): [M+H]+ 265, 267 (Ci3H13CIN2O2 requires [M+H]+ 265, 267) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
44% | To a solution of 5-bromo-1 ,2-dimethyl-1H-imidazole (10.0 g, 57.1 mmol) in dichloromethane (50 ml_) was added dropwise ethylmagnesium bromide (3 M in Et2O, 19.0 ml_, 57.0 mmol). After stirring at room temperature for 30 min, the reaction mixture was cooled down to 0C with an <n="114"/>ice-brine bath and N-Methoxy-N-methyl-benzamide (8.70 ml_, 57.1 mmol) was added dropwise. The mixture was stirred for 7.5h at room temperature. The mixture was worked-up by addition of water (100 ml_), then acidified with aq. HCI (1 M) until pH = 7. After extraction with dichloromethane (2 x 75 ml_), the organic layers were washed with water (2 x 100 ml_) then dried over MgSO4 and concentrated in vacuo. Purification of the residue on silica gel afforded (1 ,2-dimethyl-1H-imidazol-5-yl)(phenyl)methanone [8.41 g, yield 44% ; HPLC/MS : m/z = 201 (M+H) ; logP(HcooH) = 0.56]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
121 mg | With piperidine; bis-triphenylphosphine-palladium(II) chloride; copper(l) iodide; In N,N-dimethyl-formamide; at 50℃; for 3h;Inert atmosphere; | General procedure: To a solution of 2-disubstituted 1-methyl-1H-imidazole 1 (1 mmol) in DMF (5 mL), NBS(169 mg, 0,95 mmol) was added and the resulting reaction mixture was stirred in the dark at room temperature for 3h. Then, Pd(PPh3)2Cl2 (14 mg, 0.02 mmol, 2 mol%), CuI (8 mg, 0.04mmol, 4 mol%), an alkyne 3 (1,1 mmol) and piperidine (300 muL, 255 mg, 3 mmol) were added and the resulting reaction mixture was stirred at 80C (when trimethylsilylacetylene was employed as the alkyne, the reaction was carried out at 50C) for 3 h. The reaction mixture was diluted with EtOAc (100 mL), then saturated aqueous NH4Cl (100 mL) was added. The resulting mixture was stirred for 30 minutes and extracted with EtOAc (3x 25mL). The organic extracts were washed with water (3 x 25 mL) and brine (1 x 25 mL), driedover anhydrous Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash chromatogaraphy on silica gel. This procedure was employed to prepare compounds 4a-l. GLC analysis showed that all these compounds had chemical purity higherthan 98%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate;dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; In 1,4-dioxane; water; at 100℃; for 0.5h;Inert atmosphere; microwave irradiation; | Example 65 3-[(1S)-1-(2-chloro-3-fluoro-6-methoxyphenyl)ethyl]-5-(1,2-dimethyl-1H-imidazol-5-yl)-1H-pyrrolo[2,3-b]pyridine A solution of <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (0.0183 g, 0.104 mmol), 3-[(S)-1-(2-chloro-3-fluoro-6-methoxy-phenyl)-ethyl]-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrrolo[2,3-b]pyridine (0.030 g, 0.070 mmol), potassium carbonate (0.0289 g, 0.209 mmol) and 1,1'-bis(diphenylphosphino)ferrocenepalladium(II) dichloride, dichloromethane (2.84 mg, 0.00348 mmol) in previously degassed 4:1 dioxane:water (1.50 mL) was evacuated and charged with N2 (2*) and heated under microwave conditions [Biotage, 100 C., 30 min, high absorption]. The reaction mixture was purified by Gilson HPLC resulting in the title compound as a white solid. 1H NMR (400 MHz, CD3OD): delta=1.80 (d, J=7.1 Hz, 3H), 2.58 (s, 3H), 3.47 (s, 3H), 3.67 (s, 3H), 5.12 (q, J=7.1 Hz, 1H), 6.90 (dd, J=4.3, 9.1 Hz, 1H), 7.08 (dd, J=9.0, 9.0 Hz, 1H), 7.22 (s, 1H), 7.46 (d, J=1.0 Hz, 1H), 7.56 (s, 1H), 8.18 (d, J=1.8 Hz, 1H). MS (ES+): m/z 399.12, 401.11 (76/24) [MH+]. HPLC: tR=2.77 min (polar-5 min, ZQ3). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
56% | With cesium fluoride;tetrakis(triphenylphosphine) palladium(0); In methanol; 1,2-dimethoxyethane; at 150℃; for 0.166667h;Microwave irradiation; | Preparation 163: 4-(1 ,2-dimethyl-1 H-imidazol-5-yl)aniline; [00335] Tetrakis(triphenylphosphine)palladium (0.053g, 0.046mmol) was added to a solution of 4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)aniline (0.1 g, 0.456mmol), 5- bromo-1 ,2-dimethyl-1 /-/-imidazole (0.088g, 0.502mmol) and cesium fluoride (0.208g, 1 .369mmol) in DME/MeOH (2/1 , 2.9ml_). The reaction mixture was heated for 10 minutes at ~ 50 C under microwave irradiation. The reaction was diluted with EtOAc and quenched with water. The layers were separated and the aqueous layer was extracted with EtOAc. The combined organic layers were dried (Na2S04), filtered and concentrated under reduced pressure. The crude mixture was purified using Biotage silica gel column chromatography eluting with 1 to 5% MeOH/aq. NH3 (10/1 ) in DCM followed by filtration through a SCX-2 column to afford the title product as a white solid (48mg, 56%).1 H NMR (500MHz, CDCI3): delta 2.42 (s, 3H), 3.46 (s, 3H), 3.81 (br s, 2H), 6.71 -6.74 (m, 1 H), 6.85 (s, 1 H), 7.12-7.14 (m, 1 H).LC (Method B)-MS (ESI, m/z) fR 0.24 min, 188 [M+H]+ |
56% | With tetrakis(triphenylphosphine) palladium(0); cesium fluoride; In methanol; 1,2-dimethoxyethane; at 150℃; for 0.166667h;Microwave irradiation; | Preparation 163 4-(1,2-dimethyl-1H-imidazol-5-yl)aniline Tetrakis(triphenylphosphine)palladium (0.053 g, 0.046 mmol) was added to a solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (0.1 g, 0.456 mmol), <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (0.088 g, 0.502 mmol) and cesium fluoride (0.208 g, 1.369 mmol) in DME/MeOH (2/1, 2.9 mL). The reaction mixture was heated for 10 minutes at 150 C. under microwave irradiation. The reaction was diluted with EtOAc and quenched with water. The layers were separated and the aqueous layer was extracted with EtOAc. The combined organic layers were dried (Na2SO4), filtered and concentrated under reduced pressure. The crude mixture was purified using Biotage silica gel column chromatography eluting with 1 to 5% MeOH/aq. NH3 (10/1) in DCM followed by filtration through a SCX-2 column to afford the title product as a white solid (48 mg, 56%). 1H NMR (500 MHz, CDCl3): delta 2.42 (s, 3H), 3.46 (s, 3H), 3.81 (br s, 2H), 6.71-6.74 (m, 1H), 6.85 (s, 1H), 7.12-7.14 (m, 1H). LC (Method B)-MS (ESI, m/z) tR 0.24 min, 188 [M+H]+ |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
99% | With tetrakis(triphenylphosphine) palladium(0); cesium fluoride; In methanol; 1,2-dimethoxyethane; at 150℃; for 0.166667h;Microwave irradiation; | Preparation 53 (1154) -(1 ,2-dimethyl-1 /-/-imidazol-5-yl)-2-methoxyaniline (1155) (1156) A suspension of 2-methoxy-4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)aniline (925 mg, 3.71 mmol), 5-bromo-1 ,2-dimethylimidazole (650 mg, 3.71 mmol), CsF (1 .7 g, 1 1 .14 mmol) and Pd(PPh3)4 (86 mg, 0.074 mmol) in DME/MeOH (2:1 , 18 mL) was heated to 1 50C for 10 minutes under microwave irradiation. The reaction mixture was diluted with EtOAc and water. The aqueous layer was basified by addition of 2M aqueous Na2C03 and extracted with EtOAc. The combined organic layers were washed with brine, dried (MgS04) and concentrated in vacuo. The residue was purified by reverse phase column chromatography eluting with 1 00% water to afford the title compound (800 mg, 99%). (1157) 1 H NMR (500 MHz, MeOH-d4) delta ppm 6.84 (d, J = 2.0 Hz, 1 H), 6.81 (s, 1 H), 6.78 (d, J = 2.0 Hz, 1 H), 6.75 (s, 1 H), 3.88 (s, 3H), 3.53 (s, 3H), 2.41 (s, 3H). (1158) HRMS (ESI) MS m/z calcd for C12H16N3O [M+H]+ 218.1288 , found 21 8.1200. |
42% | With cesium fluoride;tetrakis(triphenylphosphine) palladium(0); In methanol; 1,2-dimethoxyethane; at 150℃; for 1h;Microwave irradiation; | Preparation 95: 4-(1 ,2-Dimethyl-1 H-imidazol-5-yl)-2-methoxyaniline; [00265] To a microwave vial was added 5-bromo-1 ,2-dimethyl-1 /-/-imidazole (230mg, 1 .31 mmol), 2-methoxy-4-(4,4,5,5-tetramethyl-1 ,3,2-dioxaborolan-2-yl)aniline (393mg, 1 .58mmol), Pd(PPh3)4 (152mg, 0.13mmol), CsF (599mg, 3.94mmol) and DME/MeOH 3/1 (4ml_). The mixture was heated in a microwave at 150C for 1 hour. The reaction mixture was then filtered and concentrated onto silica gel and purified by Biotage silica gel column chromatography eluting with (EtOAc/MeOH 100/0 to 96/4) to give the title product as a light brown oil (120mg, 42 %). 1 H NMR (500 MHz, CDCI3): delta 2.43 (s, 3H), 3.48 (s, 3H), 3.87 (s, 3H), 6.73-6.78 (m, 3H), 6.87 (s, 1 H). LC (Method A)-MS (ESI, m/z) tR 0.49 min, 218 [(M+H+), 100%]. |
42% | With tetrakis(triphenylphosphine) palladium(0); cesium fluoride; In methanol; 1,2-dimethoxyethane; at 150℃; for 1h;Microwave irradiation; | Preparation 95 4-(1,2-Dimethyl-1H-imidazol-5-yl)-2-methoxyaniline To a microwave vial was added <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (230 mg, 1.31 mmol), 2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline (393 mg, 1.58 mmol), Pd(PPh3)4 (152 mg, 0.13 mmol), CsF (599 mg, 3.94 mmol) and DME/MeOH 3/1 (4 mL). The mixture was heated in a microwave at 150 C. for 1 hour. The reaction mixture was then filtered and concentrated onto silica gel and purified by Biotage silica gel column chromatography eluting with (EtOAc/MeOH 100/0 to 96/4) to give the title product as a light brown oil (120 mg, 42%). 1H NMR (500 MHz, CDCl3): delta 2.43 (s, 3H), 3.48 (s, 3H), 3.87 (s, 3H), 6.73-6.78 (m, 3H), 6.87 (s, 1H). LC (Method A)-MS (ESI, m/z) tR 0.49 min, 218 [(M+H+), 100%]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
n-BuLi (2.66 M in hexanes, 0.963 mL, 2.56 mmol) was added dropwise to a stirred slurry of <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (470 mg, 2.68 mmol) in THF (7 mL) at ?-70 C. under argon. After stirring for another 7 min, the slurry was treated dropwise over 5 min with a solution of methyl 4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinoline-6-carboxylate (500 mg, 1.22 mmol, Intermediate 64) in THF (6 mL). The reaction was stirred in the dry ice/acetone bath for another 10 min, then removed from the cold bath and stirred for 6 min, then stirred in an ice bath for 2 min, then quenched with 5 M NH4Cl (0.77 mL, 3.85 mmol) to give an orange solution. The reaction was dried (Na2SO4), filtered, and concentrated, and the residue was purified by silica flash column chromatography (0-10% MeOH/DCM) to provide the title compound. 1H NMR (400 MHz, CDCl3) delta 8.21 (d, J=1.97 Hz 1H), 7.68 (d, J=8.59 Hz, 1H), 7.52 (d, J=8.08 Hz, 2H), 7.37-7.44 (m, 3H), 6.19 (s, 2H), 4.90 (br s, 1H), 4.33 (s, 2H), 4.06 (s, 3H), 3.41 (s, 6H), 2.30 (s, 6H); MS m/e 570.2 (M+H). | ||
n-BuLi (2.66 M in hexanes, 0.963 mL, 2.56 mmol) was added dropwise to a stirred slurry of <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (470 mg, 2.68 mmol) in THF (7 mL) at ?-70 C. under argon. After stirring for another 7 minutes, the slurry was treated dropwise over 5 minutes with a solution of methyl 4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinoline-6-carboxylate (500 mg, 1.22 mmol, Intermediate 75) in THF (6 mL). The reaction was stirred in the dry ice/acetone bath for another 10 minutes, then removed from the cold bath and stirred for 6 minutes, then stirred in an ice bath for 2 minutes, then quenched with 5 M aqueous NH4Cl (0.77 mL, 3.85 mmol) to give an orange solution. The reaction mixture was dried (Na2SO4), filtered, and concentrated to dryness. The residue was purified by silica flash column chromatography (0-10% MeOH/DCM) to provide the title compound. | ||
Intermediate 76: (4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)bis(1,2-dimethyl-1H-imidazol-5-yl)methanol H-BuLi (2.66 M in hexanes, 0.963 mL, 2.56 mmol) was added dropwise to a stirred slurry of 5~ bromo- 1 ,2-dimethyl- IH-imidazole (470 mg, 2.68 mmol) in THF (7 mL) at- 70 C under argon. After stirring for another 7 minutes, the slurry was treated dropwise over 5 minutes with a solution of methyl 4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinoline-6-carboxylate (500 mg, 1.22 mmol, Intermediate 75) in THF (6 mL). The reaction was stirred in the dry ice/acetone bath for another 10 minutes, then removed from the cold bath and stirred for 6 minutes, then stirred in an ice bath for 2 minutes, then quenched with 5 M aqueous NH4C1 (0.77 mL, 3.85 mmol) to give an orange solution. The reaction mixture was dried (Na2S04), filtered, and concentrated to dryness. The residue was purified by silica flash column chromatography (0- 50% MeOH/DCM) to provide the title compound |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A solution of 5-bromo-1,2-dimethyl- 1H-imidazole (10.6 g, 60.8 mmol) in THF (400 mE) was cooled to -77 C. Maintaining a temperature of<-70 C., nBuLi (27.7 ml, 72.0 mmol, 2.5 M in hexanes) was added over 10 mm. After 10 mm, a solution of (4-chloro-2-methoxy-3-(4-(trifluorom- ethyl)benzyl)quinolin-6-yl)(1 -methyl-i H-i ,2,3-triazol-5-yl)methanone (20.0 g, 43.4 mmol, Intermediate 63) inTHF (290 mE) was added over 10 mm maintaining a temperature of <-60 C. The reaction mixture was allowed to warm to 0 C. over 1 hand then quenched with aqueous ammonium chloride (500 mE, 13 wt %). The resulting layers were separated and the organic layer was washed with brine (400 mE). The organic layer was dried over Mg504, filtered, and concentrated. The residue was taken up in acetone (200 mE) and allowed to stir for 2 h. The resulting suspension was filtered and washed with acetone (20 mE). After drying in a vacuum oven at 60 C. the title compound was obtained as a white solid. ?H NMR (400 MHz, CDC13) oe ppm 8.24 (d, J=2.2 Hz, iH), 7.72 (d, J=8.7 Hz, iH), 7.54-7.47 (m, 3H), 7.42-7.33 (m, 3H), 7.06 (s, iH), 5.97 (s, iH), 4.32-4.22 (m, 2H), 4.06 (s, 3H), 3.88 (s, 3H), 3.32 (s, 3H), 2.13 (s, 3H); MS mle 557.1 (M+H). (4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl) quinolin-6-yl)(i ,2-dimethyl- 1 H-imidazol-5-yl)(i -methyliH-i,2,3-triazol-5-yl)methanol was resolved into its constituent enantiomers by chiral HPEC [Chiralcel OD, mobile phase: 85% heptane, 15% ethanol]. Afier resolution, the individual enantiomers were crystallized from acetone (7.5 mE/g) and isolated by filtration after the addition of heptane (15 mE/g). The first eluting enantiomer was Example 80B: ?H NMR (400 MHz, CDC13) oe ppm 8.23 (d, J=2.2 Hz, iH), 7.72 (d, J=8.8 Hz, iH), 7.51 (d, J=8.2 Hz, 2H), 7.43-7.33 (m, 3H), 7.05 (s, iH), 6.99 (bs, iH), 6.01 (s, iH), 4.30 (s, 2H), 4.06 (s, 3H), 3.88 (s, 3H), 3.34 (s, 3H), 2.17 (s, 3H); MS mle 557.1 (M+H). The second eluting enantiomer was Example 80C:?H NMR (500 MHz, CDC13) oe ppm 8.19 (d, J=2.2 Hz, iH), 7.74 (d, J=8.7 Hz, iH), 7.52 (d, J=8.2 Hz, 2H), 7.43-7.35 (m, 3H), 7.14 (s, iH), 6.08 (s, iH), 5.32 (bs, iH), 4.33 (s, 2H),4.07 (s, 3H), 3.91 (s, 3H), 3.38 (s, 3H), 2.28 (s, 3H); MS mle557.1 (M+H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a 50-mL round-bottom flask containing a solution of <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (440 mg, 2.51 mmol, Intermediate 24, step a) and THF (20 mL) under nitrogen was added isopropylmagnesium chloride in THF (2.0 M, 1.2 mL, 2.4 mmol) dropwise. The mixture was stirred for 0.5 hours at room temperature, and a solution of 4-chloro-N-methoxy-N-methylbenzamide (500 mg, 2.50 mmol, Intermediate 18, step a) in THF (5 mL) was introduced. After stirring for 7.5 hours at room temperature, the reaction was quenched by addition of 10 mL of EtOH, and concentrated under vacuum. The residue was purified by flash column chromatography (silica gel, 50% EtOAc in petroleum, 0-10% MeOH in CH2Cl2) to give the title compound as a white solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
14% | With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium carbonate; In water; N,N-dimethyl-formamide; at 80 - 100℃; | a) 6-( 1 ,2-Dimethyl- 1H-imidazol-5-yl)-8-((2-(trimethylsilyl)ethoxy)methoxy)-3-((2-(trimethylsilyl)ethoxy)methyl)guinazolin-4(3H)-oneA suspension of <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (0.02 g, 0.1 mmol), (6-(4,4,5,5-tetramethyl- 1,3 ,2-dioxaborolan-2-yl)- 8- ((2- (trimethylsilyl)ethoxy)methoxy)-3-((2-(trimethylsilyl)ethoxy)methyl)quinazolin-4(3H)-one (0.05 g, 0.08 mmol, example 28), bis (diphenylphosphino)feffocene-palladium(II)dichloride (0.01 g, 0.01 mmol), potassium carbonate (0.03 g, 0.25 mmol) and water (0.2 ml) in dimethylformamide (1 ml) was stirred in a sealed tube at 100 C for 2 hours and then at 80 C overnight. Filtration and chromatography(C18 reverse phase HPLC, methanol / water = 40:60 to 100:0) yielded the title compound as white solid (0.006 g, 14 %). MS: mle = 517.8 [M+H]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A solution of n-BuLi (2.66 M in hexane, 19.5 mL, 51.9 mmol) in THF (100 mL) was stirred under argon at ?-70 C. while a solution of <strong>[24134-09-6]5-bromo-1,2-dimethyl-1H-imidazole</strong> (9.13 g, 52.2 mmol) in THF [60 mL; containing 3 A molecular sieves (18 g)] was added dropwise over 8 minutes via cannula. After stirring for another 4 minutes at ?-70 C., neat ethyl methoxy(methyl)carbamate (2.96 mL, 22.7 mmol) was added dropwise over 3 minutes. This mixture was stirred at ?-70 C. for an additional 5 minutes, and the cold bath was then removed and the slurry was allowed to warm to room temperature with stirring for 1.5 hours. The reaction was then quenched with 5 M aqueous NH4Cl (15 mL), dried (Na2SO4), filtered, and concentrated under high vacuum at 80 C. The resulting orange gummy residue was triturated with hot heptane (?40 mL) and the decanted supernatant was allowed to crystallize to provide impure title compound. This was recrystallized from toluene (?30 mL) to provide, after washing the off-white crystalline filter cake with toluene (2*?3 mL), the title compound as an off-white crystalline solid. | ||
Intermediate 11: bis(1,2-dimethyl-1H-imidazol-5-yl)methanone A solution of -RuLi (2.66 M in hexane, 19.5 mL, 51.9 mmol) in THF (100 mL) was stirred under argon at-70 C while a solution of 5-bromo-l ,2-dimethyI-lH-imidazole (9.13 g, 52.2 mmol) in TFIF [60 mL; containing 3A molecular sieves (18 g)] was added dropwise over 8 minutes via cannula. After stirring for another 4 minutes at ~-70 C, neat ethyl metboxy(methyl)carbamate (2.96 mL, 22.7 mmol) was added dropwise over 3 minutes. This mixture was stirred at-70 C for an additional 5 minutes, and the cold bath was then removed and the slurry was allowed to warm to room temperature with stirring for 1.5 hours. The reaction was then quenched with 5 aqueous NH4C1 (15 mL), dried (Na2S04), filtered, and concentrated under high vacuum at 80 C, The resulting orange gummy residue was triturated with hot heptane (-40 mL) and the decanted supernatant was allowed to crystallize to provide impure title compound. This was recrystallized from toluene (-30 niL) to provide, after washing the off-white crystalline filter cake with toluene (2 x ~3 mL), the title compound as an off-white crystalline solid. |
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