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CAS No. : | 2840-29-1 | MDL No. : | MFCD00579106 |
Formula : | C7H6BrNO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | TZFJADFQEBASQU-UHFFFAOYSA-N |
M.W : | 216.03 | Pubchem ID : | 3418752 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | |
Hazard Statements: | H317-H319 | Packing Group: | |
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 |
---|---|---|
68% | With sodium borohydrid; In methanol; ethyl acetate; | Reference Example 35 The compound in Reference Example 34 (4.94 g, 20.1 mmol) and nickel chloride-hexahydrate (9.56 g, 40.2 mmol) were mixed in methanol (100 mL) and the solution was stirred. Then, sodium borohydride (3.8 g, 0.1 mol) was added gradually, while the solution was cooled on an ice bath to keep the reaction temperature low. Then, the mixture was stirred at room temperature for 30 minutes and concentrated under reduced pressure; the residue was dissolved in ethyl acetate; the solution was filtered through Celite; and the filtrate was washed with saturated aqueous citric acid solution and then saturated aqueous sodium chloride solution. The organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure, and the precipitated crystals were washed with hexane, to obtain 3-amino-4-bromobenzoic acid (2.95 g, 68%) as a colorless solid. 1H-NMR(DYSO-d6),delta:7.01(1H,dd,J=8.3,2.5Hz),7.39 (1H, d, J = 2.5Hz), 7.45 (1H, d, J = 8.3Hz) ppm FABMS:215(M+1) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
48.9% | With thionyl chloride; In toluene; for 2h;Heating / reflux; | Thionyl chloride (4.4 g, 37 mmol) was added to a solution of 3-amino-4-bromo- benzoic acid (2 g, 9.25 mmol) in toluene (12 ml). The reaction mixture was heated to reflux for 2 hours. Excess thionyl chloride and toluene were distilled off under reduced pressure. The purification of the residue was performed by bulb-to-bulb distillation at 130C under vacuum (0.40 mbar) to give 3-sulfinylamino-4-bromo-benzoyl chloride (0.978 g, 48.9% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 20 - 100℃; for 15h; | To a solution of <strong>[2840-29-1]3-amino-4-bromo-benzoic acid</strong> (6.0 g, 276 mmol) in dimethyl formamide (30 ml), was added sequentially at ambient temperature zinc cyanide (11.66 g, 99.4 mmol) and tetrakis(triphenylphosphine)palladium (9.57 g, 8.28 mmol). The mixture was heated to 100C for 14 hours. The reaction mixture was allowed to cool to <n="29"/>ambient temperature before the sequential addition of more zinc cyanide (0.65 g, 5.54 mmol) and tetrakis(triphenylphosphine)palladium (1.9 g, 1.64 mmol) at ambient temperature. The mixture was heated to 1000C for 1 more hour. The reaction mixture was allowed to cool to ambient temperature and was quenched by addition of a mixture of toluene and aqueous ammonia (IM). The phases were separated and the aqueous layer was extracted with toluene. The combined organic phases were dried over sodium sulfate and concentrated. The residue was purified by column chromatography on silica gel (eluent: ethyl acetate / cyclohexane 1:2 to 1 :0) to give 3-amino-4-cyano-benzoic acid (2.94 g, 67% yield). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
41% | With palladium on activated charcoal; potassium carbonate; In water; at 180℃; for 1h;Microwave irradiation; | Standard conditions: iodobenzoic acid (0.55 mmol) , HP(0)Ph2, base, Pd/C, 0 (10 mL) , conventional heating, 100 C, 1 h. b 70 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With N1,N1-dimethyl-N2-((propylimino)methylene)ethane-1,2-diamine; benzotriazol-1-ol; In dichloromethane; for 24h;Inert atmosphere; | Step 1 : 3-Amino-4-bromo-N-(2-(4-methylpiperazin-1 -yl)benzyl)benzamideN1 ,N1-dimethyl-N2-((propylimino)methylene)ethane-1 ,2-diamine (0.70 ml, 3.99 mmol) was added to a stirred solution / suspension of <strong>[2840-29-1]3-amino-4-bromobenzoic acid</strong> (719 mg, 3.33 mmol), (2-(4-methylpiperazin-1-yl)phenyl)methanamine (820 mg, 3.99 mmol) and HOBt (140 mg, 1.0 mmol) in dry DCM (20 ml) under argon. After 24 hrs the reaction mixture was diluted with DCM and washed several times with water. The solvent was removed in vacuo and the resulting yellow oil was triturated with DCM/ diethyl to give a yellow crystalline powder;LCMS: Rt 0.85 min; MS m/z 403.2 [M+H]+; Method 2minl_C_v0031 H NMR (400 MHz, CDCI3) delta 6.48 (1 H, d), 6.42 (1 H, br s), 7.30 (3H, m), 7.20 (1 H, d), 7.14 (1 H, t), 6.92 (1 H, d), 4.72 (2H, d), 4.23 (2H, br s), 3.02 (4H, br s(, 2.62 (4H, br s), 2.35 (3H, s) |
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