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CAS No. : | 59-48-3 | MDL No. : | MFCD00005711 |
Formula : | C8H7NO | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | JYGFTBXVXVMTGB-UHFFFAOYSA-N |
M.W : | 133.15 | Pubchem ID : | 321710 |
Synonyms : |
2-Indolinone;NSC 274863;Indolin-2-one;2-Oxindole;2-indolone
|
Chemical Name : | Indolin-2-one |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302 | 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 |
---|---|---|
85% | With piperidine In ethanol at 90℃; Inert atmosphere | General procedure: The appropriate aldehyde (1 equiv) was added to EtOH (3 mL/0.2 mmol) and the mixture was stirred until complete solution. Theoxindole (1 equiv) and piperidine (0.1 equiv) were added, and themixture was heated to 90°C for 3-7 h, and cooled. The resultingprecipitatewas filtered, washed with cold ethanol and dried to givethe pure compound. If necessary, additional recrystallization inethanol was applied to obtain the pure product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With piperidine In ethanol for 3 h; Reflux | General procedure: The preparation of compounds 3-25 was carried out by refluxing oxindole with different aromatic aldehydes in ethanol in the presence of a catalytic amount of piperidine were refluxed for 3 h. After cooling reaction mixture was concentrated at reduced pressure to obtain solid of 3-oxindole derivatives, then washed with 1:1 mixture of hexane-ethyl acetate (25 mL) and dried to afford titles compoundsin good yields (Table 1). Only in two cases (10 and21), both E and Z isomers were obtained, these isomers wereseparated by column chromatography using 1:9 ethyl acetate: hexane as eluent. The structures of synthetic compounds 3-25 were elucidated by 1H NMR and EI MS. Elemental analysis results were also found to be satisfactory. |
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