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Chemical Structure| 55689-64-0 Chemical Structure| 55689-64-0

Structure of 55689-64-0

Chemical Structure| 55689-64-0

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Product Details of [ 55689-64-0 ]

CAS No. :55689-64-0
Formula : C17H14O4
M.W : 282.29
SMILES Code : O=C(OC)CC1=CC=C(C2=C1)OCC3=CC=CC=C3C2=O
MDL No. :MFCD09751224

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Application In Synthesis of [ 55689-64-0 ]

* 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 [ 55689-64-0 ]

[ 55689-64-0 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 55453-87-7 ]
  • [ 55689-64-0 ]
YieldReaction ConditionsOperation in experiment
With sulfuric acid; In methanol; EXAMPLE 4 Methyl 6,11-Dihydro-11-oxodibenz[b,e]oxepin-2-acetate A mixture of 42 g. of 6,11-dihydro-11-oxodibenz[b,e]oxepin-2-acetic acid, 750 ml. of methanol, and 17 ml. of concentrated sulfuric acid is refluxed for 24 hours. The reaction mixture is diluted with water and extracted with benzene. After drying over magnesium sulfate, the benzene is concentrated to an oil. The precipitate resulting from addition of hexane is recrystallized from benzene-methanol to provide colorless crystals, m.p. 74°-76°, of methyl 6,11-dihydro-11-oxodibenz[b,e]oxepin-2-acetate. Analysis: Calculated for C17 H14 O4: 72.33percent C; 5.00percent H. Found: 72.47percent C; 5.11percent H.
  • 2
  • [ 67-56-1 ]
  • [ 55453-87-7 ]
  • [ 55689-64-0 ]
YieldReaction ConditionsOperation in experiment
With thionyl chloride; at 0 - 20℃; for 24.5h; 2-(11-Oxo-6,11-dihydrodibenzo[b,e]oxepin-2-yl)acetic acid (5;5.00 g, 18.65 mmol) was dissolved in MeOH (100 mL) and cooled to 0 °C. SOCl2 (2.06 mL, 27.98 mmol) was added dropwise over 30min and the resulting solution was stirred at r.t. for 24 h. The solvent was evaporated almost to dryness and the residue was partitioned between CH2Cl2 (50 mL) and sat. aq NaHCO3 (50 mL). The organic layer was separated, dried (Na2SO4), filtered, and concentrated under reduced pressure to give <strong>[55453-87-7]isoxepac</strong> ester, which was used without further purification. To a stirred mixture of <strong>[55453-87-7]isoxepac</strong> ester (5.00 g, 17.66 mmol) and Zn (3.44 g, 53 mmol) in DMF (50 mL) was added allyl bromide (1.66 mL, 19.43 mmol) at 0 °C. After 2 h, the mixture was filtered to remove the excess Zn. Aq 10percent HCl (20 mL) wasadded and the organic layer was separated. The aqueous layer was extracted with small portions of EtOAc (3 × 20 mL), the combined organic extracts were dried (Na2SO4), filtered, and concentrated underreduced pressure. The resulting liquid was purified by column chromatography (PE?EtOAc, 8:2) to give 4
With thionyl chloride; at 0 - 25℃; for 24.5h; [0019] 2-(1 1-oxo-6,1 1-dihydrodibenzo{b,ejoxepin-2-yl)acetic acid (5 g, 18.65 mmol) was dissolved in methanol (100 mL) and cooled at 0CC. Thionyl chloride (2.06 mL, 27.98 mmol) was added dropwise during a half hour period and the solution was stirredat room temperature (25°C) for 24 h. The solvent was evaporated almost to dryness and the residue was partitioned between dichloromethane (50 mL) and saturated sodium bicarbonate solution (50 mL). The organic layer was dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure, giving ketoester, which was used without further purification.
 

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