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CAS No. : | 68014-21-1 | MDL No. : | MFCD00798174 |
Formula : | C23H24NO2P | Boiling Point : | No data available |
Linear Structure Formula : | (C6H5)3PNCO2C(CH3)3 | InChI Key : | KNXPVXCUELYHDM-UHFFFAOYSA-N |
M.W : | 377.42 | Pubchem ID : | 2756802 |
Synonyms : |
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Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P260-P264-P280-P301+P310+P330+P331-P303+P361+P353+P310-P304+P340+P310-P305+P351+P338+P310-P363-P405-P501 | UN#: | 1759 |
Hazard Statements: | H314 | Packing Group: | Ⅲ |
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 |
---|---|---|
60% | In 1,4-dioxane; for 24h;Reflux; | General procedure: Ketimines was synthetized by methodology describe by Masuda1 and his coworkersusing various isatins and tert-butyl (triphenylphosphoranylidene)carbamateH2NHN OtBuON OtBuOPPhPh Ph2.PPh3AcOH/H2O1.NaNO2S8by aza-Witting reaction. In a 25 mL bottle flask was added isatin (4.0 mmol) and tertbutyl(triphenylphosphoranylidene) (4.2 mmol) in 1,4-dioxane anhydrous. To mixturewas stirred at reflux for 24 hours. The mixture was cooled to room temperature andthe solvent was evaporated under vacuum. The oil residue was purified by silica gelcolumn chromatography (Hex:AcOEt 95:5) to afford as a ketimines derived fromisatin nucleus furnished moderate to good yields (26-60%). tert-Butyl (2-Oxo-1-propylindolin-3-ylidene)carbamate (1a)Yellow solid; yield: 0.052 g (60%). IR (KBr): 2984, 1724, 1710, 1675, 1610, 1473, 1368, 1233, 1254, 1148,1096, 755, 462 cm-1.1H NMR (500 MHz, CDCl3): = 0.95-1.00 (t, J = 7.8 Hz, 3 H), 1.63 (s, 9H, t-C4H9), 1.65-1.78 (sext, J = 7.4 Hz, 2 H), 3.62-3.67 (t, J = 7.8 Hz, 2H), 6.83-6.86 (d, J = 9 Hz, 1 H, ArH), 7.05-7.10 (t, J = 7.8 Hz, 1 H, ArH),7.44-7.65 (m, 2 H, ArH).MW: 288.34 g/mol, C16H20N2O3. |