Structure of 4265-27-4
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CAS No. : | 4265-27-4 |
Formula : | C12H14O |
M.W : | 174.24 |
SMILES Code : | CCCCC1=CC2=CC=CC=C2O1 |
MDL No. : | MFCD00005851 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P233-P260-P261-P264-P271-P280-P302+P352-P304-P304+P340-P305+P351+P338-P312-P321-P332+P313-P337+P313-P340-P362-P403-P403+P233-P405-P501 |
* 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 |
---|---|---|
78.7% | With sodium hydrogencarbonate;aluminium chloride; In water; methoxybenzene; | EXAMPLE 1 Preparation of 2-n-butyl 3-(4-methoxy benzoyl) benzofuran 40 ml of anhydrous dichloroethane are placed in a reactor under argon and cooled to -20 C. Then 3 ml (41.87 mmoles) of phosgene, 2.5 ml (14.2 mmoles) of 2-n-butyl benzofuran and 2.13 g (15.96 mmoles) of aluminium chloride are successively introduced into the reactor. The solution is gradually heated to room temperature, stirred during 24 hours and cooled to -20 C. 1.55 ml (14.25 mmoles) of anisole are added and the solution is then heated to room temperature, stirred for 2 hours and poured into 100 ml of water. After 30 mn of vigorous stirring, the organic phase is separated, washed with 30 ml of a saturated solution of sodium bicarbonate, 40 ml of water then dried over sodium sulfate. After evaporation of the solvent and purification of the crude product obtained on a column of silica (eluant: methylene chloride/hexane 1/1), 3.44 g (11.17 mmoles) of 2-n-butyl 3-(4-methoxy benzoyl) benzofuran are obtained. Yield: 78.7%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
100% | With iron(III) chloride; In water; toluene; | (a) 2-n-Butyl-3(-4-methoxybenzoyl)benzofuran Into a reactor were introduced 520 g (600 ml) of toluene and 174 g (1mol) of 2-n-butylbenzofuran. The mixture was heated to reflux, with stirring and the medium and the apparatus were dried by taking off a forerun, using a Dean Stark system. Approximately 35 g (about 40 ml) of toluene were removed by distillation in this manner. The reactor was cooled to room-temperature and 174 g (1.02 mol) of 4-methoxybenzoyl chloride were introduced rapidly in a single portion. The mixture was chilled to -10 C.+- 2 C. and 130 g (0.8 mol) of anhydrous ferric chloride were added, also rapidly and as a single portion. The reaction medium was maintained at -10 C.+- 2 C. for 15 minutes and was then allowed to return to room-temperature. The mixture was kept stirred for 6 hours and was once again chilled to about 0 C. After this operation, 200 g of purified water were then added gradually, without exceeding 20 C. After being kept at room-temperature for 30 minutes, the insoluble product (4-methoxybenzoic acid) was filtered off and was then rinsed on the filter with 90 g of toluene. The filtrates were collected in a separating funnel, the lower aqueous phase was separated off and the organic layer was washed with a solution of 30 g of 36%-hydrochloric acid in 200 g of purified water, and then with water until neutral. The organic phase was dried and the solvent was removed under vacuum until the mass reached a temperature of 80 C. under a residual pressure of about 50 mm Hg. In this manner, about 308 g of 2-n-butyl-3-(4-methoxy-benzoyl)-benzofuran were obtained in crude form. Yield:about 100%. The 2-n-butyl-3-(4-methoxybenzoyl)benzofuran obtained by this method had, on average, the following contents of impurities identified by thin-layer chromatography. |
With iron(III) chloride; In water; toluene; | (a) 2-n-Butyl-3-(4-methoxybenzoyl)benzofuran Into a reactor fitted with devices for stirring, adding reactants and with a condenser were introduced 174 g (1 mol) of 2-n-butylbenzofuran and 520 g of toluene. Traces of water were removed by azeotropic distillation. The mixture was cooled to 20 C. and 174 g (0.12 mol) of 4-methoxybenzoyl chloride were added rapidly. After cooling to -10 C., the medium was treated with 130 g of ferric chloride, added in a single portion. After 15 minutes at this temperature, the mixture was allowed to return to ambient temperature and was stirred for 6 hours at this temperature. The medium was hydrolyzed by the addition of 200 ml of water, the temperature not being allowed to exceed 20 C. After 15 minutes at this temperature, an insoluble product (4-methoxybenzoic acid) was filtered off, the filter was washed with toluene, and the aqueous phase was separated off. The organic phase was washed with a solution of 30 g of 36%-hydrochloric acid in 200 ml of water, and then with water until neutral, and was then dried. In this manner, a toluene solution containing about 308 g (about 100%) of 2-n-butyl-3-(4-methoxybenzoyl)benzofuran was obtained and was used as such. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Ca. 81.2% | With aluminum (III) chloride; In 1,2-dichloro-ethane; at -20 - -10℃;Large scale; | 10.70 kg (80.4 mol, 1.0 eq) of aluminum trichloride was added to 60.00 kg of 1,2-dichloroethane at -20 to -10 C.14.00 kg (80.4 mol, 1.0 eq) of compound 5 was added with stirring.After stirring uniformly, 16.46 kg (96.5 mol, 1.2 eq) of Compound 7 was added at -20 to -10 C, and the reaction was kept for 1 to 2 hours.After the reaction, the reaction solution was transferred to 90.00 kg of purified water, the pH was adjusted to 2 with dilute hydrochloric acid, and the organic phase was added and washed with 25.00 kg of purified water twice.The organic phase was washed with 45.00 kg of a saturated aqueous solution of sodium chloride and dried over 1.40 g of anhydrous sodium sulfate.The organic phase was concentrated under reduced pressure at 55 C.20.11 kg (65.0 mol) of compound 8 was obtained.The yield was about 81.2%. |
71% | With aluminum (III) chloride; In dichloromethane; at 20℃; for 24h;Inert atmosphere; | General procedure: To a solution of compound 2 (5.4 g, 24.83 mmol)and 4-methoxybenzoyl chloride (4.4 mL, 32.28 mmol) in DCM (50 mL) was added AlCl3(3.3 g, 24.83 mmol). The mixture was stirred at room temperature for 24hours and was quenchedwith ice water (50 mL). The reaction mixture was extractedwith DCM (350 mL). The organic phase was dried over Na2SO4,filtered and concentrated to give the crude product, which was purified byflash chromatography [PE/EA=10:1] to give 3 (6.9 g, 78.9%) as a yellowsolid. |
64% | 2-butylbenzofuran (400 mg, 0.405 mL, 2.30 mmol) was weighed out into a dry RBF (25 mL) containing a SB. The material was diluted in CS2 (6.0 mL), capped and a N2 balloon attached. The mixture was stirred and cooled in an ice bath (30 min). Next, 4-methoxybenzoyl chloride (0.404 mL, 2.98 mmol) was added followed by dropwise addition of tin (IV) chloride (0.370 mL, 2.98 mmol). The contents were stirred (3 h) at 0 C and slowly warmed to RT and stirred (3 d). The reaction mixture was diluted with ¾0 and extracted with EtOAc (4 x 12 mL). The combined organic layer was washed with HC1 (0.5 N), H20, sat. NaHC03, and brine. The organic layer was dried (Na2S0 ), filtered and concentrated in vacuo. The crude material was purified by column chromatography on Si02 (100% hexanes to 5% ethyl acetate in hexanes) to give 86 (0.455 g, 1.48 mmol, 64%) as a clear oil. -NMR (400 MHz) CDC13: 7.87-7.85 (d, 2 H), 7.49-7.47 (d, 1 H), 7.38-7.36 (d, 1 H), 7.28-7.25 (m, 1 H), 7.20-7.16 (m, 1 H), 6.97- 6.95 (d, 2 H), 3.88 (s, 3 H), 2.95-2.91 (t, 2 H) 1.79-1.75 (m, 2 H), 1.40-1.34 (m, 2 H), 0.92- 0.88 (t, 3 H); .3C-NMR (100 MHz) CDC13: 190.5, 164.6, 163.4, 153.6, 131.9, 131.7, 127.2, 124.1, 123.3, 121.2, 1 16.8, 113.7, 1 11.9, 55.5, 30.2, 27.8, 22.4, 13.7. |
10.6 g | Add to the 100 ml reaction bottle5.50 grams of aluminum trichloride and24 ml of dichloromethane,Stir down to 0 C,Temperature control within 5 C to drop into it7.0 g of p-methoxybenzoyl chloride was stirred and allowed to stand for 1 hour after the completion of the dropwise addition.6.00 g of 2-butylbenzofuran was dissolved in 24 ml of dichloromethane, and the mixture was added dropwise to the above reaction liquid at a controlled temperature of 5 C. After the completion of the dropwise addition, the temperature was slowly raised to 25 C, and the reaction was kept for 2 hours, and the reaction was completed.After cooling to room temperature, pour into ice water, separate the liquid, and extract the aqueous phase with dichloromethane.Combine the organic layers and wash twice,The organic phase is concentrated under reduced pressure to give an oil10.60 grams. |
Tags: 4265-27-4 synthesis path| 4265-27-4 SDS| 4265-27-4 COA| 4265-27-4 purity| 4265-27-4 application| 4265-27-4 NMR| 4265-27-4 COA| 4265-27-4 structure
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