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CAS No. : | 2415-80-7 | MDL No. : | MFCD00001272 |
Formula : | C9H8Cl2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WLWFQGXZIDYWQF-UHFFFAOYSA-N |
M.W : | 187.07 | Pubchem ID : | 95349 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P301+P312-P302+P352-P304+P340-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 |
---|---|---|
77% | With nitrosylsulfuric acid; In nitromethane; at 70 - 75℃; for 3h; | General procedure: A reaction vessel with a magnetic stirrer was charged with reactants in the followingsequence: NOHSO4 (3 mmol), nitromethane (3 ml) and the corresponding1,1-dichlorocyclopropane(1 mmol), then closed with a joint stopper, andplaced in a thermostatic bath. The reaction mixture was vigorously stirredand heated gradually from room temperature up to 70-75 C and thenkept at 70-75 C for 3-4 h. Afterwards, the resulting mixture was passedthrough a layer of SiO2 (40/60), the latter was additionally washed withchloroform (3 × 5 ml). The filtrate was evaporated under reduced pressureto afford the crude product which was recrystallized from ethanol orpurified by column chromatography (Silica gel 40/60, ethyl acetate-lightpetroleum, 1:10). The 1H and 13C NMR spectra of isoxazoles 2a-i, 4b,cand 5b,c were as described elsewhere.14-16 |