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Structure of 3017-53-6

Chemical Structure| 3017-53-6

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Product Details of [ 3017-53-6 ]

CAS No. :3017-53-6
Formula : C10H11BrO2
M.W : 243.10
SMILES Code : CC(Br)C(OCC1=CC=CC=C1)=O
MDL No. :MFCD00028027

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Application In Synthesis of [ 3017-53-6 ]

* 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 [ 3017-53-6 ]

[ 3017-53-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 109-11-5 ]
  • [ 3017-53-6 ]
  • [ 1448190-03-1 ]
YieldReaction ConditionsOperation in experiment
40% benzyl 2-(3-oxomorpholino)propanoate Under an atmosphere of nitrogen, an ice-cooled solution of <strong>[109-11-5]morpholin-3-one</strong> (commercially available from for example Aldrich) (100 mg, 1.0 mmol) in DMF (2 mL) was treated with sodium hydride (60% w/w in mineral oil) (40 mg, 1.0 mmol). After 5 minutes, benzyl 2- bromopropanoate (commercially available from for example Aldrich) (240 mg, 1.0 mmol) was added and the mixture was stirred with cooling for 30 minutes and then at ambient temperature for a further 18 hours. The reaction mixture was cautiously treated with saturated aqueous sodium bicarbonate (10 mL) and then extracted with ethyl acetate (2 x 40 mL). The combined organic phase was washed with brine (25 mL), filtered through a hydrophobic frit, and evaporated to dryness. The product was subjected to purification by mass-directed automated preparative HPLC (formic acid modifier) to give the title compound (105 mg, 40% yield). LCMS RT= 0.80 min, ES+ve m/z 264 [M+H]+.
40% Under an atmosphere of nitrogen, an ice-cooled solution of <strong>[109-11-5]morpholin-3-one</strong> (commercially available from for example Aldrich) (100 mg, 1.0 mmol) in DMF (2 mL) was treated with sodium hydride (60% w/w in mineral oil) (40 mg, 1.0 mmol). After 5 minutes, benzyl 2-bromopropanoate (commercially available from for example Aldrich) (240 mg, 1.0 mmol) was added and the mixture was stirred with cooling for 30 minutes and then at ambient temperature for a further 18 hours. The reaction mixture was cautiously treated with saturated aqueous sodium bicarbonate (10 mL) and then extracted with ethyl acetate (2*40 mL). The combined organic phase was washed with brine (25 mL), filtered through a hydrophobic frit, and evaporated to dryness. The product was subjected to purification by mass-directed automated preparative HPLC (formic acid modifier) to give the title compound (105 mg, 40% yield). LCMS RT=0.80 min, ES+ve m/z 264 [M+H]+.
13% A solution of <strong>[109-11-5]morpholin-3-one</strong> (750 mg, 7.42 mmol) in THF (49 ml_) at 5 C was treated with NaH (475 mg, 11.9 mmol). After stirring for 30 min, Preparation 24 (16 g, 8.90 mmol) was added dropwise. After stirring at 25 C for 3 h the mixture was diluted with sat. aq. NH4CI (30 ml_) and water (20 ml_). The mixture was extracted with EtOAc (2 x 60 ml_) and the combined extracts were dried (MgSO4), filtered and concentrated. The crude product was purified by chromatography (silica, EtOAc/PE = 0- 70%) to give the title compound 25 (256 mg, 13%).1H NMR (400 MHz, CDCI3) d 7.41 - 7.30 (m, 5H), 5.33 (q, 1 H), 5.22 - 5.09 (m, 2H), 4.22 (s, 2H), 3.96 - 3.77 (m, 2H), 3.52 - 3.20 (m, 2H), 1.45 (d, 3H).
  • 2
  • [ 3017-53-6 ]
  • [ 2051-99-2 ]
  • [ 1352037-33-2 ]
  • C20H24O2 [ No CAS ]
YieldReaction ConditionsOperation in experiment
General procedure: To a 50-mL two-neck round-bottom flask equipped with a cannula were added magnesium turnings (608 mg, 25 mmol), and the flask was heated at 80 C in vacuo for 1 h. A solution of the <strong>[2051-99-2]4-isobutylphenyl bromide</strong> (426 mg, 2.0 mmol) in THF (5 mL) was added dropwise over 3 min under argon. The mixture was heated at 50 C until the reaction was initiated. Additional <strong>[2051-99-2]4-isobutylphenyl bromide</strong> (1.71 g, 8.0 mmol) in THF (11.6 mL) was then added slowly via cannula over 15 min. The reaction mixture was heated at reflux for 3 h, after which a solution of 4-isobutylphenyl magnesium bromide 5 was obtained. To a separate 50-mL Schlenk tube was added anhydrous CoBr2 (21.9mg, 0.10mmol), and the tube was heated at 50C in vacuo for 2h. After cooling to room temperature, the cyclopropane-based bisoxazoline ligand 2 (0.12mmol) in THF (3mL) was added under argon. The resulting mixture was stirred for 1h at the same temperature, with 2-bromopropanoate 6 (1mmol) being added via syringe. The mixture solution was cooled to -80C, and the prepared Grignard reagent 5 (2.8mL, 0.5M in THF, 1.4mmol) was then added over 1h via syringe. The reaction mixture was stirred for another 6h at -80C and then quenched with saturated NH4Cl solution (5mL). The aqueous phase was extracted with diethyl ether (4×10mL). The combined organic phases were dried over anhydrous Na2SO4, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (n-hexane/ethyl acetate 100:1). 4.4.5 (S)-Benzyl 2-(4-isobutylphenyl)propanoate 7e Colorless oil, 93% yield, 91:9 er. The enantiomeric ratio was determined by HPLC with a Daicel Chiralcel OJ-H column (8.0% 2-propanol in n-hexane, 0.5 mL/min, 220 nm, minor tr = 16.94 min (R), major tr = 21.49 min (S)). [alpha]D20 = +76.1 (c 1.1, CHCl3). 1H NMR (300 MHz, CDCl3) delta: 7.36-7.07 (m, 9H), 5.15-5.06 (m, 2H), 3.75 (q, J = 7.2 Hz, 1H), 2.45 (d, J = 7.2 Hz, 2H), 1.89-1.80 (m, 1H), 1.51 (d, J = 7.2 Hz, 3H), 0.90 (d, J = 6.6 Hz, 6H). 13C NMR (75 MHz, CDCl3) delta: 174.5, 140.5, 137.6, 136.1, 129.3, 128.4, 127.9, 127.7, 127.2, 66.2, 45.1, 45.0, 30.2, 22.3, 18.4. HRMS (APCI-TOF): calcd for C20H25O2 [M+H]+ 297.1855, found 297.1854.
 

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