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CAS No. : | 5538-51-2 | MDL No. : | MFCD00000663 |
Formula : | C9H7ClO3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | DSGKWFGEUBCEIE-UHFFFAOYSA-N |
M.W : | 198.60 | Pubchem ID : | 79668 |
Synonyms : |
|
Chemical Name : | 2-(Chlorocarbonyl)phenyl acetate |
Signal Word: | Danger | Class: | 8 |
Precautionary Statements: | P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338 | UN#: | 3261 |
Hazard Statements: | H314 | Packing Group: | Ⅱ |
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 |
---|---|---|
With triethylamine; In benzene; | EXAMPLE 29 3-(Acetylsalicyloyl)-8-Oxa-3-Azabicyclo(3.2.1)Octane SPC8 o-Acetoxybenzoyl chloride (0.1 mole, 19.85 grams) was slowly added to a mixture of 8-oxa-3-azabicyclo(3.2.1)octane (0.1 mole, 11.13 grams) and triethylamine (0.1 mole) in 60 ml of benzene at 20 C. The reaction mixture was stirred 2.5 hours at 25 C. The salt was filtered off and washed with benzene. After removal of benzene, the product was obtained as a viscous liquid which was purified by column chromatography (alumina). Impurities were eluted with ether and the product with methanol to yield the product represented by formula (IX). Analysis for C15 H17 NO4. Calculated: C, 65.44%; H, 6.23%; N, 5.09%. Found: C, 65.55%; H, 6.05%; N, 5.05%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | With pyridine; In dichloromethane; at 0 - 20℃; for 24h; | A mixture of N-carbobenzyloxy-L-threonine benzyl ester (Z-Thr-OBzl, 21.77 g, 63.40 mmole) and pyridine (25 mL) in anhydrous dichloromethane (500 mL) was cooled in an ice bath while under a nitrogen atmosphere. Acetylsalicyloyl chloride (17.63 g, 88.76 mmole) was added and the mixture was allowed to warm to room temperature and stir overnight. After 24 hours, the mixture was poured into ice-cold 2N hydrochloric acid (400 mL). After mixing, the layers were separated and the dichloromethane fraction was washed with water (500 mL), saturated sodium bicarbonate solution (500 mL), water (500 mL), brine (500 mL) and dried over sodium sulfate (25 g). After filtration, concentration under reduced pressure, and drying under high vacuum, the remaining yellow oil (35.43 g) was purified by flash chromatography on silica gel (300 g, 0.035- 0.070 mm, 6 nm pore diameter), eluting with hexanes/ethyl acetate (3: 1). After concentration of the product containing fractions under reduced pressure and drying under high vacuum until the weight was constant, the experiment produced the protected acetylsalicylic-L-threonine ester SPIB0010201 (28.1 g, 88% yield) as a colorless oil. IH NMR (300 MHz, CDC13) : 5 = 7.74 (1H, d, J= 7. 5 Hz), 7.51 (1H, dt, J= 7. 5,1. 5 Hz), 7. 34-7. 17 (lah, m), 7.06 (1H, d, J= 7. 2 Hz), 5.62 (2H, m), 5.13 (4H, m), 4.65 (1H, dd, J= 9.6, 2.4 Hz), 2.29 (3H, s), 1. 38 (3H, d, J= 6.6 Hz). 3C NMR (75 MHz, CDC13) : 8 = 169.35, 169.22, 162.73, 156.26, 150.41, 135.79, 134.67, 133.77, 131.24, 128.35, 128.24, 128.08, 127.95, 125.78, 123.51, 122.61, 71.22, 67.72, 67.26, 57.64, 20.98, 16. 88. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
81% | With N-ethyl-N,N-diisopropylamine; In tetrahydrofuran; at 22℃; for 4h;Inert atmosphere; | Fig. 2 shows the synthesis of VP939. A solution of CAPE (500mg, 1.76mmol) and N,N-diisopropylethylamine (0.67ml, 3.87mmol) in 7ml of anhydrous tetrahydrofurane (THF) was added drop-wise to a solution of 2-(acetyloxy)benzoyl chloride (Sigma Aldrich, Italy; 769mg, 3.87mmol) in anhydrous THF (2ml) and the mixture was stirred under nitrogen for 4h at 22C. After removing the THF, the mixture was dissolved in ethyl acetate. The obtained organic phase was washed with water (2×75ml) followed by saturated sodium chloride solution, dried over sodium sulfate, filtered, and evaporated. The isolated crude material was purified by column chromatography (silica gel 60, 230-400mesh, Merck) using ethyl acetate/cyclohexane (3:7) as eluant. The title compound was obtained as a colorless sticky oil (861mg, 81%): IR (KBr) cm-1 3055, 2987, 1752, 1717, 1607, 1265, 1243, 1193, 1112, 1037, and 739; 1H NMR (DMSO-d6) delta 8.07-7.90 (m, 3H, aromatic), 7.83-7.64 (m, 3H+1H, aromatic+CH=CHCOO), 7.53-7.45 (m, 1H, aromatic), 7.42-7.18 (m, 9H, aromatic), 6.71 (d, J=16.0, 1H, CH=CHCOO), 4.38 (t, J=6.8Hz, 2H, OCH2CH2Ph), 2.98 (t, J=6.8Hz, 2H, OCH2CH2Ph), 2.21 (s, 3H, OCOCH3), 2.20 (s, 3H, OCOCH3). Anal. (C35H28O10) C, H. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
60% | General procedure: Fangchinoline (100 mg, 0.16 mmol) was dissolved in 8 mL of CH2Cl2. The mixture was cooled to 0 C under N2. Pyridine (25 mg, 0.32 mmol) was added to the mixture. The solution was stirred for 1 h and various types of acyl chlorides (0.24 mmol, in 2 mL of CH2Cl2) were added dropwise over 10 min. The mixture was stirred for 1 h at 0 C and was stirred another hour at room temperature. The mixture was washed with water, dried over anhydrous Na2SO4 and filtered. After being concentrated under vacuum, the residue was purified by flash chromatography on silica gel using CH2Cl2/CH3OH as eluant to afford the desired products 6a-6p. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
75% | General procedure: Potassium selenocyanate (0.14 g, 1.0 mmol) dissolved inacetone (5.0 mL) was treated with the appropriate acyl chloride1a?i (1.0 mmol). The reaction mixture was stirred at r.t. for15 min, followed by addition of appropriate aminobenzensulfonamide(2?6) (1.0 mmol) and stirred for 40 min at the same temperature.After this time the mixture was quenched with H2O and theformed precipitate was filtered-off and dried on air. The obtainedproducts 7?22 were used as they are. |
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