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CAS No. : | 536-38-9 | MDL No. : | MFCD00000625 |
Formula : | C8H6BrClO | Boiling Point : | - |
Linear Structure Formula : | BrCH2C(O)C6H4Cl | InChI Key : | FLAYZKKEOIAALB-UHFFFAOYSA-N |
M.W : | 233.49 | Pubchem ID : | 68303 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P280-P305+P351+P338-P310 | UN#: | 3261 |
Hazard Statements: | H314 | Packing Group: | Ⅱ |
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 |
---|---|---|
General procedure: A stirred mixture of <strong>[90008-50-7]3-amino-6-propoxypyridazine</strong> 3 (4.50g, 29.4mmol), 2-bromo-1-[4-(2-methoxyethoxy)phenyl]ethanone 11 (8.03g, 29.4mmol) and EtOH (280mL) was heated at reflux for 2.5 hours. The mixture was cooled and NaHCO3 (2.50g, 30mmol) was added. The mixture was stirred at room temperature for 15 hours, heated at reflux for 1 hour, then cooled and evaporated. The residue was extracted with CHCl3 (150mL) and the extract washed with saturated, aqueous NaCl solution (50mL), dried (MgSO4) and evaporated. The residue was purified by flash chromatography over silica gel. Elution with 1-2% MeOH in CH2Cl2 afforded a green/brown solid. Treatment with decolourising charcoal and recrystallization from cyclohexane gave 6f (3.95g, 41%) as pale green crystals, m.p. 82.5-84C. 1H NMR (CDCl3) ? 1.06 (3H, t, J=7.2Hz), 1.75-1.94 (2H, m), 3.47 (3H, s), 3.74-3.81 (2H, m), 4.14-4.21 (2H, m), 4.27 (2H, t, J=6.6Hz), 6.68 (1H, d, J=9.3Hz), 7.00 (2H, d, J=8.8Hz), 7.76-7.88 (3H, m), 7.94 (1H, s). MS (APCI+) m/z 328 (M+H, 100%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydrogencarbonate; | 6.1. 2-(4-Chlorophenyl)-6-methoxyimidazo[1,2-a]pyridine A mixture of 1.3 g (10.5 mmol) of 5-methoxy-2-pyridinamine, 2.44 g (1eq) of alpha-bromo-4-chloroacetophenone and 1.76 g (2eq) of sodium bicarbonate in 20 ml of 95percent strength alcohol is heated under reflux for 4 h 30 min. under argon. The mixture is evaporated to dryness and the residue taken up between CH2 Cl2 and H2 O, followed by washing, drying and evaporation. The product is purified by chromatography and then crystallized in ether. M.p. 148°-9° C. 5-Methoxy-2-pyridinamine was obtained according to a process described in the literature: G. J. Clark and L. W. Deady, Aust. J. Chem. 34, 927 (1981). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
INTERMEDIATE 4; 6-(4-Chlorophenyl)-5-(hydroxymethyl)imidazo [2, 1-b] [ 1 ,3] thiazoIe-2-carbaldehyde; A solution of <strong>[1003-61-8]2-aminothiazole-5-carboxaldehyde</strong> (1.0 g, 7.8 mmol) and 2-bromo-4'- chloroacetophenone (1.8 g, 7.8 mmol) in acetone (5 mL) was heated at reflux for 5 h. The solvent was evaporated and the crude material purified by preparative HPLC (Xterra Cl 8, 50 mM NH4HCO3 (pH 10) - CH3CN) to give the intermediate compound 6-(4- chlorophenyl)imidazo[2,l-b][l,3]thiazole-2-carbaldehyde as a yellow solid (176 mg). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | To <strong>[89226-13-1]tert-butyl 2-amino-2-thioxoethylcarbamate</strong> (1.0 g, 5.3 mmol) and 4-chlorophenacylbromide (1.2 g, 5.3 mmol) was added ethanol (8 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was concentrated under reduced pressure, 4 mol/L hydrochloric acid/1,4-dioxane solution (10 ml) was added to the obtained residue, and the mixture was stirred at room temperature for 2 hr. The precipitate was collected by filtration, washed with a small amount of 1,4-dioxane, and dried under reduced pressure to give the title compound as a white powder (1.4 g, 5.3 mmol, 100%). 1H NMR (400 MHz, DMSO) delta 8.56 (s, 3H), 8.27 (s, 1H), 8.04 (d, J=8.6 Hz, 2H), 7.55 (d, J=8.6 Hz, 2H), 4.51 (s, 2H). MS (ESI) m/z 225 (M+H)+ |
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