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CAS No. : | 122-85-0 | MDL No. : | MFCD00003380 |
Formula : | C9H9NO2 | Boiling Point : | - |
Linear Structure Formula : | CH3CONH(C6H4)C(O)H | InChI Key : | SKLUWKYNZNXSLX-UHFFFAOYSA-N |
M.W : | 163.17 | Pubchem ID : | 73942 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H332-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 |
---|---|---|
91% | With ammonium hydroxide; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; oxygen; In ethanol; at 50℃; for 24h; | General procedure: Under an air atmosphere, a Schlenk tube was charged with MCM-41-bpy-CuI (40 mg, 0.025 mmol), alcohol (0.5 mmol), TEMPO (4 mg, 0.025 mmol), aqueous ammonia (0.5 mmol, 25e28%, w/w) and EtOH (1.0 mL). The mixture was stirred at 50 C for 18-48 h. After completion of the reaction, the reaction mixture was cooled to room temperature, diluted with ethyl acetate (10 mL), and filtered. The MCM-41-bpy-CuI complex was washed with EtOH (2*5 mL), and Et2O (5 mL) and reused in the next run. The filtrate was concentrated under reduced pressure and the residue was purified by flash column chromatography on silica gel (petroleum/ethyl acetate=15:1 to 10:1) to provide the desired product. |
86%Spectr. | With bismuth vanadate; oxygen; In acetonitrile; at 40℃; under 760.051 Torr; for 3h;Schlenk technique; Irradiation; | General procedure: Bismuth vanadate (32.3 mg, 100 mmol) was added to a Schlenkflask containing benzyl alcohol stock solution (1 mL, 0.1 mmol inacetonitrile) and acetonitrile (9 mL). The mixture was left to stirfor 30 min to disperse the catalyst under a dioxygen atmospherevia a balloon. The mixture was then irradiated with a 30W blueLED array at a distance of 2 cmwith an irradiance of 245mWcm2.The mixture reached ca. 40 C by the end of the reaction and afterirradiation, the catalyst was removed using centrifugation at4000 rpm for 30 min. For GC analysis, 1 mL of supernatant wastaken and 1 lL injected. For NMR analysis, the supernatant wasreduced in volume using a rotary evaporator at 65 mbar at 20 C,and the residue dissolved in d6-DMSO containing maleic acid asan internal standard. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With sodium tetrahydroborate; In methanol; at 20℃; | To a solution of 4-acetamidobenzaldehyde (10 g, 61.3 mmol) in methanol (100 mL) was added sodium borohydride (800 mg) at room temperature in portions. The reaction mixture was stirred over night, and the progress of reaction checked by TLC using 4:1 hexanes: EtOAc as eluent. Absence of starting material indicated the completion of reduction and the reaction mixture was concentrated in a rotavap. The residue was partitioned between water (25 mL) and ethyl acetate (4*50 mL) and the organic layer was washed with brine (25 mL). The ethyl acetate layer was dried over anhydrous sodium sulfate and the removal of the solvent gave the alcohol as a pale yellow solid, which was dried under high vacuum. 8.6 g (85%); 1H NMR (DMSO-d6): delta 2.0 (s, 3H), 4.5 (d, 2H), 5.2 (t, 1H), 7.25 (d, 2H), 7.55 (d, 2H), 9.95 (s, 1H). |
85% | With methanol; sodium tetrahydroborate; at 20℃; | Preparation of 4-acetamidobenzyl alcohol. To a solution of 4-acetamidobenzaldehyde (10 g, 61.3 mmol) in methanol (100 mE) was added sodium borohydride (800 mg) at room temperature in portions. The reaction mixture was stirred over night, and the progress of reaction checked by TLC using 4:1 hexanes:EtOAc as eluent. Absence of starting material indicated the completion of reduction and the reaction mixture was concentrated in a rotavap. The residue was partitioned between water (25 mE) and ethyl acetate (4x50 mE) and the organic layer was washed with brine (25 mE). The ethyl acetate layer was dried over anhydrous sodium sulfate and the removal of the solvent gave the alcohol as a pale yellow solid, which was dried under high vacuum. 8.6 g (85%); ?H NMR (DMSO-d5): oe 2.0 (s, 3H), 4.5 (d, 2H), 5.2 (t, 1H), 7.25 (d, 2H), 7.55 (d, 2H), 9.95 (s, 1H) ppm. |
61% | With ReOBr2(2-(2-hydroxy-5-methylphenyl)benzotriazole-(H))(PPh3); phenylsilane; In tetrahydrofuran; for 1.33333h;Reflux; | General procedure: In a typical experiment, to a mixture of carbonyl compound (1.0mmol) and [ReOBr2(hmpbta)(PPh3)] (5mol%) in THF (3mL) at reflux temperature was added PhSiH3 (2.0mmol). The reaction mixture was stirred under air atmosphere (the reaction times are indicated in the Table 4) and the progress of the reaction was monitored by TLC or 1H NMR. Upon completion, the reaction was quenched with 1equiv of tetrabutylammonium fluoride (TBAF) (1.0M THF) during 1h. Then, the reaction mixture was evaporated and purified by silica gel column chromatography with the appropriate mixture of n-hexane and ethyl acetate to afford the alcohols, which are all known compounds. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
54% | In isopropyl alcohol; | a) Preparation of 2-ethylhexyl 3-(4-acetylaminophenyl)-2-cyanoacrylate A mixture of 35 g (0.18 mol) of 2-ethylhexyl cyanoacetate and 30 g (0.18 mol) of 4-acetamidobenzaldehyde in 300 ml of isopropanol is refluxed for 3 hours. The reaction mixture is then allowed to cool and is crystallized. The crystals formed are separated out by filtration and are recrystallized from a minimum amount of isopropanol. After filtration and drying, 33.3 g (54% yield) of 2-ethylhexyl 3-(4-acetylaminophenyl)-2-cyanoacrylate are obtained in the form of a pale yellow powder. Melting point: 119 C. UW absorption (as a solution in ethanol): λmax=351 nm, εmax=30 960, EI %=904 Elemental analysis for C20H26N2O3 calculated: C 70.15; H 7.65; N 8.18; O 14.02 found: C 70.08; H 7.65; N 8.16; O 14.03 |
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