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Chemical Structure| 1017598-60-5 Chemical Structure| 1017598-60-5

Structure of 1017598-60-5

Chemical Structure| 1017598-60-5

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Product Details of [ 1017598-60-5 ]

CAS No. :1017598-60-5
Formula : C13H20BrFOSi
M.W : 319.29
SMILES Code : C[Si](C(C)(C)C)(OCC1=CC=C(Br)C(F)=C1)C
MDL No. :MFCD31802578
Boiling Point : No data available
InChI Key :ADKCIEJVZVQGAK-UHFFFAOYSA-N
Pubchem ID :57899966

Safety of [ 1017598-60-5 ]

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

Application In Synthesis of [ 1017598-60-5 ]

* 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 [ 1017598-60-5 ]

[ 1017598-60-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 18162-48-6 ]
  • [ 222978-01-0 ]
  • [ 1017598-60-5 ]
YieldReaction ConditionsOperation in experiment
99% With 1H-imidazole; In dichloromethane; at 0 - 25℃; To a solution of compound SI-3 (9.5 g, 46.5 mmol) and imidazole (5.1 g, 75 mmol) in CH2Cl2 (200 mL) was added TBDMSCl (8.05 g, 53.5 mmol) at 0 oC over 1 hour. Then, the mixture was warmed to room temperature and stirred overnight. Then, the reaction was quenched with water and extracted with CH2Cl2. The organic layer was washed with brine, dried over anhydrous Na2SO4, filtered and concentrated to give the crude product which was purified by column chromatography to obtain pure compound SI-4 (15.6 g, 99% crude) as a white solid. ESI-MS m/z 319 [M+H]+ calc. for C13H20BrFOSi. This intermediate was used in the next step without further characterization.
91.2% With 1H-imidazole; In N,N-dimethyl-formamide; at 0 - 20℃; for 16h; A solution of <strong>[222978-01-0](4-bromo-3-fluoro-phenyl)methanol</strong> (13.1 g, 63.9 mmol) and imidazole (12.2 g, 179 mmol) in DMF (150 mL) was cooled to 0 C. and tert-butylchlorodimethylsilane (14.4 g, 95.8 mmol) was added. The cooling bath was removed and the mixture was stirred at ambient temperature for 16 hours. The reaction was poured into chilled water (30 mL), diluted with ethyl acetate (100 mL) and water (100 mL) and stirred for 15 minutes. The organic phase was removed and the aqueous phase was extracted with ethyl acetate (150 mL*2). The organic fractions were combined, washed with saturated NaCl (50 mL*2), dried with anhydrous sodium sulfate, filtered and concentrated under vacuum. The residue was purified by silica gel column chromatography (0-10% ethyl acetate in petroleum ether) to give (4-bromo-3-fluoro-phenyl)methoxy-tert-butyl-dimethyl-silane (18.6 g, 91.2% yield) as a colorless liquid. 1H NMR (400 MHz, CDCl3) delta ppm 7.49 (dd, J=7.1, 8.1 Hz, 1H), 7.18-7.08 (m, 1H), 7.01-6.92 (m, 1H), 4.69 (s, 2H), 0.96 (s, 9H), 0.12 (s, 6H).
86% With 1H-imidazole; In N,N-dimethyl-formamide; at 20℃; General procedure: tert-butylchlorodimethylsilane (6.68 g, 44.30 mmol) was added to a stirred solution of <strong>[222978-01-0](4-bromo-3-fluorophenyl)methanol</strong> (8.65 g, 42.19 mmol) and 1H-imidazole (6.03 g,88.60 mmol) in DMF (180 mL). The resulting solution was stirred at ambient temperature for 17 hours. The reaction mixture was diluted with water (200 mL),extracted with Et2O (3 x 250 mL), the organic extracts were combined, washed with saturated brine (300 mL), dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elutiongradient 0 to 10% EtOAc in heptane. Pure fractions were evaporated to dryness to afford ((4-bromo-3-fluorobenzyl)oxy)(tert-butyl)dimethylsilane (11.55 g, 86 %) as acolourless oil.
71.4% With 1H-imidazole; In N,N-dimethyl-formamide; at -10 - 20℃; for 48h; Step 2 (MT-S2):tert-Butylmethylsilyl chloride (16.5 g, 105.3 mmol) and imidazole (11.95 g, 175.6 mmol) was added to a solution of MT-Si (18 g, 87.8 mmol) in dimethylformamide (200 mL) at -10C and the reaction mixture was stirred at room temperature for 48 h. The reaction was quenched with saturated ammonium chloride solution, extracted with ethyl acetate and the combined organic layer was washed with water, brine; dried over anhydrous sodium sulfate, filteredand the solvent was evaporated under vacuum to afford the crude intermediate. Purification by column chromatography over silica gel (60-i20mesh) and using 2-5% ethyl acetate in pet ether as the eluent afforded 20 g (71 .4%) of MT-52 as a colorless liquid.

 

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