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Chemical Structure| 920284-79-3 Chemical Structure| 920284-79-3

Structure of 920284-79-3

Chemical Structure| 920284-79-3

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Product Details of [ 920284-79-3 ]

CAS No. :920284-79-3
Formula : C13H10FNO3
M.W : 247.22
SMILES Code : O=[N+](C1=C(F)C=CC=C1OCC2=CC=CC=C2)[O-]
MDL No. :MFCD14582899

Safety of [ 920284-79-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H320-H335
Precautionary Statements:P264-P270-P301+P312-P330

Application In Synthesis of [ 920284-79-3 ]

* 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 [ 920284-79-3 ]

[ 920284-79-3 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 19064-24-5 ]
  • [ 920284-79-3 ]
YieldReaction ConditionsOperation in experiment
87% To a suspension of sodium hydride (1.522 g, 38.06 mmol) in anhydrous DMF (150 mL) at room temperature was added benzyl alcohol (3.44 mL, 33.3 mmol) dropwise over 10 minutes, and stirring was continued for another 10 minutes. 2,6-Difluoronitrobenzene (5.046 g, 31.72 mmol) was added to the reaction mixture in one portion. The reaction mixture was stirred for an hour, and 100 mL water and 100 mL ethyl acetate were added. The layers were separated, and the aqueous layer was extracted with 75 mL ethyl acetate. The combined organic layers werre washed with 100 mL water and 100 mL brine, dried over sodium sulfate and concentrated in vacuo. The resulting residue was purified by flash chromatography (6% to 35% ethyl acetate in hexanes) to give 6.818 g (27.6 mmol, 87%) of 1-benzyloxy-3-fluoro-2-nitro-benzene as a yellow oil. MS: 248 (M+H)+. Also prepared in a similar manner using (2-hydroxy-ethyl)-methyl-carbamic acid tert-butyl ester in place of benzyl alcohol was [2-(3-Fluoro-2-nitro-phenoxy)-ethyl]-methyl-carbamic acid tert-butyl ester. MS: 215 (M-BOC+H)+.
  • 2
  • [ 19064-24-5 ]
  • [ 100-51-6 ]
  • [ 920284-79-3 ]
YieldReaction ConditionsOperation in experiment
81% With potassium carbonate; In N,N-dimethyl-formamide; at 60℃; for 12h; To a solution of compound A28f (318 mg, 2 mmol) in DMF (10 mL), were added K2C03 (552 mg, 4 mmol) and benzyl alcohol (226 L, 2.2 mmol). The reaction mixture was stirred for 12 h at 60 C. The reaction mixture was cooled to room temperature, diluted with water and extracted with EtOAc (3 x 30 mL). The combined organic layer was dried over Na2S04, concentrated under reduced pressure, and the crude material was purified by silica gel column chromatography (10% EtOAc/hexanes) to obtain the compound A32 as yellow oil (400 mg, 81%). Rf = 0.2 (10% EtO Ac/hexanes) .
74% With sodium hydride; In N,N-dimethyl-formamide; at 0℃; for 90h; Step A: To a stirred, cooled (0 C.) solution of DMF (75 mL) was added sodium hydride (0.45 g, 18.9 mmol). The ice-bath was removed from the resulting white slurry and benzyl alcohol (1.70 mL, 16.5 mmol) was added dropwise. The mixture was stirred 15 min, then the <strong>[19064-24-5]1,3-difluoro-2-nitrobenzene</strong> (1.66 mL, 15.71 mmol) was added in one portion. The reaction was stirred about 90 min. The reaction was diluted with EtOAc and water. The aqueous layer was separated and extracted with EtOAc (2*). The combined organic layers were washed with water (3*), brine (2*), dried over Na2SO4, concentrated and the residue was chromatographed on silica gel (120 g) eluting with a 0-to-20% EtOAc/hexane gradient, to give 1-(benzyloxy)-3-fluoro-2-nitrobenzene as a yellow oil, 2.87 g (74%). 1H NMR (400 MHz, DMSO-d6): δ 7.58 (m, 1H), 7.32 (m, 5H), 7.28 (d, J=8.7, Hz, 1H), 7.11 (m, 1H), 5.32 (s, 2H).
With potassium carbonate; In N,N-dimethyl-formamide; at 60℃; for 18h;Enzymatic reaction; Step 1: 1-(benzyloxy)-3-fluoro-2-nitrobenzene A mixture of <strong>[19064-24-5]1,3-difluoro-2-nitrobenzene</strong> (1 g, 6 mmol), benzyl alcohol (0.81 mL, 7.8 mmol), potassium carbonate (1.79 g, 13.0 mmol) in N,N-dimethylformamide (5 mL) was heated at 60 C. for 18 h. The reaction mixture was cooled to room temperature then diluted with EtOAc and washed with water and brine. The organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified by flash chromatography on a silica gel column eluting with 0 to 20% EtOAc in Hexanes to give the desired product.
With potassium carbonate; In N,N-dimethyl-formamide; at 60℃; for 18h; A mixture of 1 ,3-difluoro-2-nitrobenzene (1.0 g, 6.29 mmol), benzyl alcohol (0.81 mL, 7.86 mmol) and potassium carbonate (1.74 g, 12.6 mmol) in DMF (5 mL) is heated at 60 0C for 18 h. The reaction mixture is poured into EtOAc, and washed with water and brine. The organic phase is concentrated and purified to give the title compound: 1H NMR (CDCI3) δ 7.36 (m, 6H), 6.83 (m, 2H), 5.20 (s, 2H).

 

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