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CAS No. : | 5527-95-7 | MDL No. : | MFCD00143288 |
Formula : | C7H4ClFO | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 158.56 | Pubchem ID : | - |
Synonyms : |
|
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | 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 |
---|---|---|
toluene-4-sulfonic acid; In toluene; for 2h;Heating / reflux; | 3.2 g (20 mmol) of the aldehyde 18 and 4.7 g (30 mmol) of the 1,3-diol are dissolved in 50 ml of toluene, 0.4 g of p-toluenesulfonic acid is added, and the mixture is heated on a water separator for 2 h. The cooled solution is washed with sat. sodium hydrogencarbonate solution and evaporated. The residue is passed through silica gel. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium methylate; In methanol; at 20℃; | General procedure: In the first synthetic step (step a, Scheme 1), a series of (Z)-substituted diarylacrylonitrile analogues were synthesized by reacting substituted benzyl carbaldehydes with their corresponding substituted phenylacetonitriles in 5% NaOMe in methanol. The reaction mixture was stirred at room temperature for 2-3 h for the reaction to complete and the final product precipitated of the solution. The precipitate was filtered, washed with water and dried to yield the final compound in yields ranging from 70 to 95% (Scheme 1) [16]. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
30.9g | With toluene-4-sulfonic acid; In toluene;Inert atmosphere; Reflux; Dean-Stark; | Under a nitrogen atmosphere, 4-chloro-3-fluorobenzaldehyde (25 g), <strong>[2612-28-4]2-propyl-1,3-propanediol</strong> (18.6 g), and p- toluenesulfonic acid monohydrate (0 the .90g) was dissolved in toluene (500mL), it was brought to reflux.The resulting water was removed using a Dean-Stark apparatus, and stirred for further 30 minutes.Was allowed to cool to room temperature, the addition of a saturated aqueous solution of sodium hydrogen carbonate (200mL) were separated, and the organic layer was washed with saturated brine (200mL), and dried over anhydrous sodium sulfate, evaporated under reduced pressure and the organic solvent did.The residue was purified by silica gel column chromatography, and recrystallized from methanol to give 2- (4-chloro-3-fluoro-phenyl) -5-propyl-1,3-dioxane (30.9g). |
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