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Chemical Structure| 872141-24-7 Chemical Structure| 872141-24-7

Structure of 872141-24-7

Chemical Structure| 872141-24-7

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Product Details of [ 872141-24-7 ]

CAS No. :872141-24-7
Formula : C11H10FNO6
M.W : 271.20
SMILES Code : O=C(OC)C(C1=CC=CC(F)=C1[N+]([O-])=O)C(OC)=O
MDL No. :MFCD20441782

Safety of [ 872141-24-7 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319
Precautionary Statements:P501-P270-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313-P301+P312+P330

Application In Synthesis of [ 872141-24-7 ]

* 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.

  • Downstream synthetic route of [ 872141-24-7 ]

[ 872141-24-7 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 19064-24-5 ]
  • [ 108-59-8 ]
  • [ 872141-24-7 ]
YieldReaction ConditionsOperation in experiment
54% With potassium carbonate; In N,N-dimethyl-formamide; at 65℃; for 24h; To a solution of <strong>[19064-24-5]2,6-difluoronitrobenzene</strong> (5.0 g, 31.44 mmol) in dry dimethylformamide (DMF -50 mL) was added potassium carbonate (4.41 g, 32 mmol) and dimethylmalonate (3.6 mL, 31.44 mmol). The reaction mixture was heated to 65 C. and stirred for 24 hours. After cooling to room temperature, the mixture was neutralized with dilute aqueous HCl and extracted with diethyl ether, dried (MgSO4), and concentrated in vacuo. Crystallization from hexane/ethylacetate (95/5), gave 2-(3-fluoro-2-nitro-phenyl)-malonic acid dimethyl ester (4.6 g, 54%).
54% With potassium carbonate; In N,N-dimethyl-formamide; at 65℃; for 24h; Step 1 To a solution of <strong>[19064-24-5]2,6-difluoronitrobenzene</strong> (5.0 g, 31.44 mmol) in dry N,N-dimethylformamide (50 mL) was added potassium carbonate (4.41 g, 32 mmol) and dimethylmalonate (3.6 mL, 31.44 mmol). The reaction mixture was heated to 65 C. and stirred for 24 hours. After cooling to room temperature, the mixture was neutralized with a dilute aqueous solution of hydrochloric acid and extracted with diethyl ether. The ethereal layer was dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. Crystallization from 5% ethyl acetate/hexane gave 4.6 g (54%) of dimethyl (3-fluoro-2-nitrophenyl)malonate. MS (ESI) m/z 272 [M+H]+). Step 1:; To a solution of <strong>[19064-24-5]2,6-difluoronitrobenzene</strong> (5.0 g, 31.44 mmol) in dry N,N-dimethylformamide (50 mL) was added potassium carbonate (4.41 g, 32 mmol) and dimethylmalonate (3.6 mL, 31.44 mmol). The reaction mixture was heated to 65 C. and stirred for 24 hours. After cooling to room temperature, the mixture was neutralized with a dilute aqueous solution of hydrochloric acid and extracted with diethyl ether. The ethereal layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. Crystallization from 5% ethyl acetate/hexane gave 4.6 g (54%) of 2-(6-fluoro-2-nitro-phenyl)-malonic acid dimethyl ester. MS (ESI) m/z 272 [M+H]+).
52% With potassium carbonate; In N,N-dimethyl-formamide; at 65℃; for 24h; dimethyl 2-(3-fluoro-2-nitrophenyl)malonate; 1,3-Difluoro-2-nitrobenzene (2.83 g, 17.79 mmol) was dissolved in N,N-dimethylformamide (25 mL). Potassium carbonate (2.49 g, 18.02 mmol) was added to the mixture followed by dimethyl malonate (2.033 ml, 17.79 mmol). Mixture was warmed to 65 C. and held for 24 hours. Mixture was cooled to room temperature. Reaction was quenched with 1N hydrochloric acid. Material was extracted three times with diethyl ether and the aqueous phase was discarded. Material was washed twice with water and the aqueous phase was discarded. Material was washed with brine and the aqueous phase was discarded. Organics were dried MgSO4, filtered and then concentrated to dryness. Residue was crystallized with hexanes. Solids were filtered off and washed with hexanes. Title compound was obtained as yellow crystals in 52% yield. MS (M-H)-=270.1.
21% With potassium carbonate; In N,N-dimethyl-formamide; at 65℃; Step 1: dimethyl 2-(3-fluoro-2-nitro-phenyl)-malonate 5.40 g (38.3 mmol) potassium carbonate and 4.50 mL (38.0 mmol) dimethylmalonate were added successively to 6.00 g (37.7 mmol) <strong>[19064-24-5]2,6-difluoronitrobenzene</strong> in 60 mL DMF and the mixture was stirred overnight at 65 C. Then the reaction mixture was cooled to RT and slowly poured onto 75 mL of 1N aqueous hydrochloric acid solution. The aqueous phase was extracted several times with EtOAc. The combined organic phases were washed with water and saturated sodium chloride solution, dried on magnesium sulphate, filtered and evaporated down i. vac. The residue was stirred with n-hexane, suction filtered and dried. Yield: 2.18 g (21% of theoretical) ESI-MS: m/z=272 (M+H)+

 

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