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CAS No. : | 2881-63-2 | MDL No. : | MFCD00018713 |
Formula : | C11H11ClO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | DGCZHKABHPDNCC-UHFFFAOYSA-N |
M.W : | 226.66 | Pubchem ID : | 101336 |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
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 |
---|---|---|
52% | With trifluoromethylsulfonic anhydride; triethylamine; Triphenylphosphine oxide; In 1,2-dichloro-ethane; at 85℃; for 1.5h;Inert atmosphere; | Step 2: ethyl 3-(4-chlorophenyl)propiolateTo a soluton of Ph3PO (13.5 g, 24.3 mmol) in dry DCE (80 mL) was added Tf20 (5.1 g, 24.3 mmol) at 0C under nitrogen atmosphere and the mixture was stirred at 0C for 15 min. To this solution was added ethyl 3-(4-chlorophenyl)-3-oxopropanoate (5 g, 22.1 mmol) and TEA (4.92 g, 48.6 mmol) and the mixture was heated at 85C for 1.5 hr. The resulting solution was cooled to rt and washed with brine (50 mL x 3). After the removal of solvent, the crude residue was purified with column chromatography (PE) to afford ethyl 3-(4- chlorophenyl)propiolate (2.4 g, 52%) as a colorless oil. |
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