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Chemical Structure| 55805-29-3 Chemical Structure| 55805-29-3

Structure of 55805-29-3

Chemical Structure| 55805-29-3

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Product Details of [ 55805-29-3 ]

CAS No. :55805-29-3
Formula : C8H6F2O
M.W : 156.13
SMILES Code : O=CC1=CC=C(C(F)F)C=C1
MDL No. :MFCD18072541

Safety of [ 55805-29-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P264-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P362-P403+P233-P501

Application In Synthesis of [ 55805-29-3 ]

* 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 [ 55805-29-3 ]

[ 55805-29-3 ] Synthesis Path-Downstream   1~4

  • 1
  • 2,2'-(1,4-phenylene)bis-1,3-dioxoran [ No CAS ]
  • [ 55805-29-3 ]
  • [ 369-54-0 ]
  • 3
  • [ 24588-68-9 ]
  • [ 55805-29-3 ]
  • [ 369-54-0 ]
  • 4
  • [ 623-27-8 ]
  • [ 55805-29-3 ]
  • [ 369-54-0 ]
YieldReaction ConditionsOperation in experiment
20%; 30% In a 5 ml round-bottomed flask, tetrabutylammonium hydrogendifluoride (750 mg, 2.5 mmol) was dried under a reduced pressure of 1 mmHg at 100 C. for 1 hour.After cooling, triethylamine (0.35 ml, 2.5 mmol), 1-methyl-2-fluoropyridinium tosylate (700 mg, 2.5 mmol), then terephthaldehyde (36 mg, 0.25 mmol) were added.The whole mixture was heated at 80 C. for 6 hours.It was then hydrolyzed with 3 ml of water and neutralized with a saturated aqueous solution of sodium monohydrogencarbonate (3 ml).The extraction was carried out with 3 times 5 ml of ethyl ether.The organic phase was dried over magnesium sulfate, filtered and concentrated under a reduced pressure of around 20 mmHg.The residue was purified by chromatography on a silica column (eluent: gradient of dichloromethane in petroleum ether).The product was then in the form of a colorless liquid and was obtained with a yield of 30% (m=13 mg).4-Difluoromethylbenzaldehyde was isolated with a yield of 20% (8 mg).The chromatography results were:Eluent: petroleum ether/dichloromethane:1/1.Developer: UV.Retardation factor: Rf1=0.8; and Rf2=0.27. The NMR characteristics were the following:1H NMR (CDCl3, 300 MHz): 6.70 (t, J=56.5 Hz, 2H); 7.62 (s, 4H).13C NMR (CDCl3, 75 MHz): Primaries: - Secondaries: - Tertiaries: 114.0 (t, J=239 Hz); 126.0 (t, J=6 Hz). Quaternaries: 136.7 (t, J=22 Hz). 4-Difluoromethylbenzaldehyde1H NMR (CDCl3 300 MHz): 6.71 (t, J=55.9 Hz, 1H); 7.70 (d, J=7.9 Hz, 2H); 7.99 (d, J=7.9 Hz, 2H); 10.09 (s, 1H).
 

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