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Structure of 81093-21-2
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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
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CAS No. : | 81093-21-2 |
Formula : | C9H11Br |
M.W : | 199.09 |
SMILES Code : | BrCC1=C(C(=CC=C1)C)C |
MDL No. : | MFCD03844741 |
InChI Key : | UFYRPPWFKLXRQV-UHFFFAOYSA-N |
Pubchem ID : | 113627 |
GHS Pictogram: |
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Signal Word: | Danger |
Hazard Statements: | H314-H290 |
Precautionary Statements: | P501-P234-P264-P280-P390-P303+P361+P353-P301+P330+P331-P363-P304+P340+P310-P305+P351+P338+P310-P406-P405 |
Class: | 8 |
UN#: | 3261 |
Packing Group: | Ⅱ |
* 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 |
---|---|---|
i 1-Bromomethyl-2,3-dimethylbenzene A mixture of 1-hydroxymethyl-2,3-dimethylbenzene (ref) (5 g) and phosphorous tribromide (1.16 ml) in benzene (50 ml) was heated at reflux for 3 hours. The mixture was diluted with toluene, washed with water, dried (MgSO4) and evaporated. Yield 7 g. MS: GC-MS: 200/198 (M) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With 2-nitropropane; sodium ethanolate; In ethanol; at 20℃; | Step 1; Sodium ethoxide, 2 , 3-dimethylbenzylbromide and 2-nitropropane in ethanol at about 20 0C. Workup with a solution of sodium hydroxide. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate; In N,N-dimethyl-formamide; at 80℃; for 3h; | To a solution of methyl 2-methyl-5-(4-morpholinyl)-1H-benzimidazole-7-carboxylate, prepared as described in Example 26, step d (0.2 g, 0.726 mmol) in N,N-Dimethylformamide (DMF) (10 mL) was added <strong>[81093-21-2]2,3-dimethylbenzyl bromide</strong> (0.289 g, 1.453 mmol) and potassium carbonate (0.301 g, 2.179 mmol), The resulting reaction mixture was stirred for 3 h at 80 C. The solution was cooled to room temperature and poured into water and was extracted with EtOAc. The combined organic phase was washed with Brine and concentrated. The residue was purified on Biotage Isolera purification system using a Biotage 10 g SNAP silica gel cartridge and eluted with a gradient of DCM to 5% MeOH/DCM over 10 column volumes. The expected compound was collected and evaporated to yield a tan solid. The tan solid was dissolved in tetrahydrofuran (THF) (10.00 mL) followed by the addition of 1M lithium hydroxide solution (10 mL, 10 mmol). The reaction was stirred at 50 C. for 2 h. The reaction was cooled to room temperature and the organic solvent was removed in vacuo. The solution was diluted with water (20 mL) and acidified with 1 N HCl. The mixture was then filtered and the grey solid was purified by reversed phase HPLC with a gradient of acetonitrile (0.1% TFA) and water (0.1% TFA v/v) (20-50%) over 10 minutes. The appropriate fractions were collected and evaporated to yield the desired product (55.2 mg, 0.145 mmol, 20.02% yield). 1H NMR (400 MHz, CHLOROFORM-d) delta ppm 2.31 (s, 3H) 2.36 (s, 3H) 2.85 (s, 3H) 3.13-3.24 (m, 4H) 3.80-3.96 (m, 4H) 5.49-5.61 (m, 2H) 6.29-6.38 (m, 1H) 6.94-6.99 (m, 1H) 7.00-7.07 (m, 1H) 7.14-7.23 (m, 1H) 7.72 (m, 1H). MS(ES+) m/e 379.8 [M+H]+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
38% | With caesium carbonate; In N,N-dimethyl-formamide; at 120℃; for 1h; | General procedure: A stirred solution of 2-aminothiazole 10 or 17 (0.08 g, 0.27 mmol), an appropriately substituted benzyl bromide (11a-ab) (0.03 mL, 0.29 mmol), and Cs2CO3 (0.11 g, 0.35 mmol) in DMF (5 mL) was heated at 120 C for 1 h Yield 38%, mp 210.6 C; Purity by HPLC: 99.17% (35% acetonitrile); 1H NMR (400 MHz, CDCl3): delta 2.27 (s, 3H), 2.31 (s, 3H), 2.36 (s, 3H), 4.50 (s, 2H), 5.80 (br s, 1H), 7.02 (dd, 1H, J = 7.6, 2.4 Hz), 7.07-7.14 (m, 2H), 7.22 (br d, 1H, J = 7.6 Hz), 7.47-7.54 (m, 3H), 7.60 (dd, 1H, J = 9.2, 1.6 Hz), 8.28 (s, 1H), 8.74 (dd, 1H, J = 1.6, 0.8 Hz); 13C NMR (100 MHz, CDCl3) delta 15.23, 20.67, 24.44, 48.90, 115.31, 117.75, 120.58, 120.77, 122.73, 125.96, 126.86, 128.40, 130.19, 133.25, 134.73, 135.38, 137.06, 137.77, 146.62, 149.65, 152.34, 154.42, 158.21, 167.33; IR (KBr) 3228, 2972, 1551 cm-1; HRMS-ESI m/z [M + H]+ calcd. for C24H23N6S: 427.1699, found 427.1703. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
71% | With potassium carbonate; In N,N-dimethyl-formamide; at 80℃; for 3h; | a) 4-(4-bromo-1-(2,3-dimethylbenzyl)-2-methyl-1H-benzo[d]imidazol-6-yl)morpholine To the mixture of 4-(4-bromo-2-methyl-1H-benzo[d]imidazol-6-yl)morpholine (0.4 g, 1.351 mmol) in N,N-Dimethylformamide (DMF) (10 mL) was added <strong>[81093-21-2]1-(bromomethyl)-2,3-dimethylbenzene</strong> (0.323 g, 1.621 mmol) and potassium carbonate (0.560 g, 4.05 mmol). The resulting reaction mixture was stirred at 80 C. for 3 h. It was cooled to room temperature and poured into water (100 mL). The aqueous mixture was extracted with DCM (100 mL*2). The combined organic phases were washed with Brine (100 mL) and concentrated. The crude material was purified on silica column (20?90% EtOAc in Hexane) to give the product as solid (0.4 g, 71%). 1H NMR (400 MHz, CHLOROFORM-d) delta ppm 2.33 (s, 3H) 2.37 (s, 3H) 2.53 (s, 3H) 2.98-3.14 (m, 4H) 3.66-3.93 (m, 4H) 5.24 (s, 2H) 6.24 (d, J=7.58 Hz, 1H) 6.53 (d, J=2.27 Hz, 1H) 6.89-7.00 (m, 1H) 7.06-7.17 (m, 2H); MS (ES+) m/e 414.1[M+H]+ |
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