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Type HazMat fee for 500 gram (Estimated)
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Chemical Structure| 646-97-9 Chemical Structure| 646-97-9

Structure of 646-97-9

Chemical Structure| 646-97-9

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Product Details of [ 646-97-9 ]

CAS No. :646-97-9
Formula : C6H6F6O
M.W : 208.10
SMILES Code : C=CCC(O)(C(F)(F)F)C(F)(F)F
MDL No. :MFCD03092986

Safety of [ 646-97-9 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H225-H315-H319-H335
Precautionary Statements:P210-P280-P301+P330+P331-P302+P352-P304+P340-P305+P351+P338
Class:3
UN#:1987
Packing Group:

Application In Synthesis of [ 646-97-9 ]

* 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 [ 646-97-9 ]

[ 646-97-9 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 381-98-6 ]
  • [ 646-97-9 ]
  • 4,4,4-trifluoro-3-hydroxy-1-methyl-3-(trifluoromethyl)butyl 2-(trifluoromethyl)acrylate [ No CAS ]
  • 5,5,5-trifluoro-4-hydroxy-4-(trifluoromethyl)pent-2-yl 2-(trifluoromethyl)acrylate [ No CAS ]
YieldReaction ConditionsOperation in experiment
tris-(trifluoromethanesulfonyl)methane acid; at 110℃; for 8h;Product distribution / selectivity; Example 2; In a 100-mL three-neck flask with a reflux condenser attached to a top portion thereof, 0.8 g (0.002 mol) of tris(trifluoromethanesulfonyl)methane, 14.0 g (0.1 mol) of alpha-trifluoromethylacrylic acid and 83.2 g (0.4 mol) of 1,1,1-trifluoro-2-(trifluoromethyl)pent-4-ene-2-ol were placed. The flask was then heated in an oil bath of 110 C. After a lapse of 8 hours, the composition of the resulting reaction solution was analyzed by gas chromatography. The total amount (selectivity) of the isomer mixture of a target monomer for a fluorinated resist was 89.1% (the apparent yield of the target monomer was 83.7% as determined by multiplication of the selectivity by the conversion rate of 93.9%). There were also detected, as impurities, 6.2% of alpha-trifluoromethylacrylic acid raw material, 0.5% of addition product in which one alpha-trifluoromethylacrylic acid molecule was added to a vinyl group of the acrylic acid moiety of the target product and 9.5% in total of unidentified impurity substances. The reaction results (conversion rate, selectivity, yield and by-product detection amounts) are indicated in TABLE 1.
trifluorormethanesulfonic acid; at 110℃; for 6h;Product distribution / selectivity; Example 6; In a 1-L three-neck flask with a reflux condenser attached to a top portion thereof, 10.0 g (0.07 mol) of trifluoromethanesulfonic acid, 100.0 g (0.7 mol) of alpha-trifluoromethylacrylic acid and 594.3 g (2.8 mol) of 1,1,1-trifluoro-2-(trifluoromethyl)pent-4-ene-2-ol were placed. The flask was then heated in an oil bath of 110 C. After a lapse of 6 hours, the composition of the resulting reaction solution was analyzed by gas chromatography. The total amount (selectivity) of the isomer mixture of a target monomer for a fluorinated resist was 80.9% (the apparent yield of the target monomer was 67.2% as determined by multiplication of the selectivity by the conversion rate of 83.1%). There were also detected, as impurities, 17.4% of alpha-trifluoromethylacrylic acid raw material, 7.7% of addition product in which one alpha-trifluoromethylacrylic acid molecule was added to a vinyl group of the acrylic acid moiety of the target product (as excessive addition product) and 1.9% iso-BTHB. The mixing ratio of BTHB and BTHB isomer after the reaction was about 1:2. The reaction results (conversion rate, selectivity, yield and by-product detection amounts) are indicated in TABLE 1. The reaction solution was cooled and washed with 200 g of 10% aqueous sodium carbonate (Na2CO3) solution, followed by distillating the fluorinated alkene and collecting a fraction at 80 to 94 C. by distillation under reduced pressure (1.6 Torr=2 kPa). With this, 120 g of the monomer for the fluorinated resist was obtained. The composition of the monomer product was analyzed by gas chromatography. The isomer mixture of the target 5,5,5-trifluoro-4-hydroxy-4-(trifluoromethyl)pent-2-yl 2-(trifluoromethyl)acrylate was obtained with a purity of 98.5%. The amount of the impurities was 1.5%.
 

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