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Chemical Structure| 383-68-6 Chemical Structure| 383-68-6

Structure of 383-68-6

Chemical Structure| 383-68-6

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Product Details of [ 383-68-6 ]

CAS No. :383-68-6
Formula : C5H6BrF3O2
M.W : 235.00
SMILES Code : CC(OCC(Br)C(F)(F)F)=O
MDL No. :MFCD09763643

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Application In Synthesis of [ 383-68-6 ]

* 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 [ 383-68-6 ]

[ 383-68-6 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 383-68-6 ]
  • [ 311-86-4 ]
  • [ 64-19-7 ]
YieldReaction ConditionsOperation in experiment
89% With sulfuric acid; water; for 4h;Heating / reflux; EXAMPLE 2 In accordance with example 2, 1 L of water is placed in a 2 L single-necked round-bottomed flask fitted with a condenser. Concentrated H2SO4 (100 ml) is added slowly to the flask to produce a reaction mixture. Acetyl bromohydrin (180 g) is then added and the mixture is heated to reflux. The mixture is refluxed for 3 hrs until the mixture becomes homogeneous and further refluxed for 1 hour and then cooled to room temperature. The reaction mixture is saturated with NaCl and extracted with ether (200 ml*5). Combined ether layers are washed with saturated NaHCO3, dried over anhydrous Na2SO4 and evaporated to yield bromohydrin 131 g. Yield=131 g. (89%) 1H NMR (CDCl3, 300 MHz) delta ppm: 3.90-4.02 (m, 1H), 4.04-4.14 (m, 1H), 4.22-4.34 (m, 1H).
  • 2
  • [ 383-68-6 ]
  • [ 311-86-4 ]
YieldReaction ConditionsOperation in experiment
90.8% With sulfuric acid; In methanol; for 4h;Reflux; Methanol: 64.1 g,3,3,3-trifluoro-2-bromopropyl acetate: 235 g,Concentrated sulfuric acid: 4.7g,Was added to a 0.5 L reaction flask,Stirring and heating to reflux,Reflux 4.0h,Most of the methanol and by-product methyl acetate were distilled off at atmospheric pressure,And distilled to give 175.2 g of a colorless liquid in a yield of 90.8%.
With sulfuric acid; In methanol; at 70℃; for 4h; Using an excess of trifluoropropene into a mixture of 8000 mg of 20% fuming sulfuric acid and 1600 mg of bromine,Keep the temperature at 12-22 C until the red and brown of the bromine in the flask disappears and stop venting.15 ml of acetic acid was added to the mixed solution, and heating was continued at 95 C for 1 h. The product was subjected to extraction and washing to give 2-bromo-3,3,3-trifluoroacetate. After color-mass spectrometry analysis,The yield was 76.14% and the selectivity was 95%.Add to 1790 mg of 2-bromo-3,3,3-trifluoroacetate35.8 mg of concentrated sulfuric acid and 488 mg of methanol were refluxed in an oil bath at 70 C for 4 h.Excess methanol and ethyl formate were distilled off from the product to give 2-bromo-3,3,3-trifluoro-1-propanol.After chromatographic analysis, the yield was 92.58%, as shown in Figure 3.
 

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