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CAS No. : | 14062-25-0 | MDL No. : | MFCD00016333 |
Formula : | C10H11BrO2 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | ZFDCWHPNBWPPHG-UHFFFAOYSA-N |
M.W : | 243.10 | Pubchem ID : | 7020609 |
Synonyms : |
|
Signal Word: | Warning | Class: | |
Precautionary Statements: | P305+P351+P338 | UN#: | |
Hazard Statements: | H302-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 |
---|---|---|
85% | With 1,8-diazabicyclo[5.4.0]undec-7-ene In dimethyl sulfoxide at 21℃; for 12 h; | General procedure: To a 5 mL Schlenk tube were added aryl / heteroaryl acetates 3 (1.0 mmol, 1.0 equiv.), vinyl diphenylsulfonium triflate (434.4 mg, 1.2 mmol, 1.2 equiv.) and DMSO (5 mL). The mixture was stirred at room temperature for 2 min and to the mixture was added DBU (456 mg, 3 mmol, 3.0 equiv.). The mixture was stirred for 12 hours at room temperature till the reaction was complete. To the resulting mixture was added saturated ammonium chloride solution (25 mL), and the mixture was then extracted with EtOAc (3 x 150 mL). The combined organic layers were washed with H2O (2 x 30 mL), dried with anhydrous sodium sulfate. After concentration, product 4 was purified using column chromatography on silica gel using an appropriate eluent. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
26% | With sodium hydride In tetrahydrofuran; N,N-dimethyl-formamide; mineral oil at 20℃; | Example 14A Ethyl 1-(4-bromophenyl)cyclopropanecarboxylate 1.45 g (36.2 mmol) of sodium hydride in mineral oil (60percent pure) were initially charged in 100 ml of DMF. A mixture of 4.0 g (16.5 mmol) of ethyl (4-bromophenyl)acetate and 6.5 g (34.6 mmol) of 1,2-dibromoethane was dissolved in 50 ml of THF and slowly added dropwise. The mixture was stirred at RT overnight. The reaction mixture was diluted with ethyl acetate and washed with water and saturated sodium chloride solution. The organic phase was separated off, dried over magnesium sulphate and filtered, and the filtrate was concentrated. The residue was purified by preparative HPLC [Reprosil C18, 10 μm, 250 mm*40 mm (30percent methanol/70percent water to 100percent methanol) over a run time of 25 min]. After HPLC control, the product-containing fractions were combined and concentrated. This gave 1.15 g (26percent of theory) of a liquid. GC-MS [Method 5]: Rt=5.45 min; MS(ESIpos): m/z=268/270 (M+) 1H-NMR (400 MHz, DMSO-d6): δ [ppm]=1.09 (t, 3H), 1.16-1.20 (m, 2H), 1.46-1.50 (m, 2H), 4.02 (q, 2H), 7.26-7.31 (m, 2H), 7.47-7.51 (m, 2H) |
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