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Chemical Structure| 98349-22-5 Chemical Structure| 98349-22-5

Structure of 98349-22-5

Chemical Structure| 98349-22-5

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Product Details of [ 98349-22-5 ]

CAS No. :98349-22-5
Formula : C7H2F3N
M.W : 157.09
SMILES Code : N#CC1=CC(F)=C(F)C=C1F
MDL No. :MFCD00013289
InChI Key :DLKNOGQOOZFICZ-UHFFFAOYSA-N
Pubchem ID :593813

Safety of [ 98349-22-5 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H312-H315-H319-H332-H335
Precautionary Statements:P261-P280-P305+P351+P338

Application In Synthesis of [ 98349-22-5 ]

* 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 [ 98349-22-5 ]

[ 98349-22-5 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 932-53-6 ]
  • [ 98349-22-5 ]
  • 2-(2,4-difluoro-4-cyano-phenyl)-6-methyl-1,2,4-triazine-3,5(2H,4H)-dione [ No CAS ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; potassium carbonate; In water; dimethyl sulfoxide; STR122 At 120 C., 2.54 g (20 mMol) of <strong>[932-53-6]6-methyl-1,2,4-triazine-3,5(2H,4H)-dione</strong> in 50 ml of dimethyl sulphoxide are stirred with 2.8 g (20 mMol) of potassium carbonate and 3.14 g (20 mol) of 2,4,5-trifluoro-benzonitrile for 12 hours, the mixture is subsequently cooled to room temperature and stirred with water, the pH is adjusted to using hydrochloric acid and precipitated product is filtered off with suction, stirred with water and dried. 4.6 g (87% of theory) of 2-(2,4 -difluoro-4-cyano-phenyl)-<strong>[932-53-6]6-methyl-1,2,4-triazine-3,5(2H,4H)-dione</strong> of melting point 214 C. are obtained.
  • 2
  • [ 98349-22-5 ]
  • [ 129946-63-0 ]
YieldReaction ConditionsOperation in experiment
93% With hydrazine; In 1,4-dioxane; for 16.0h; 2,4,5-Trifluorobenzonitrile (1 g, 6.3 mmol) and hydrazine (610 mg, 19 mmol) were dissolved in dioxane (3 mL) and stirred for 16 h. The reaction mixture was partitioned between ethyl acetate (30 mL) and sat. NaHCO3 (20 mL). The organic layer was washed with brine (10 mL), dried (MgSO4), filtered and concentrated to give 4-hydrazino-2,5-difluorobenzonitrile (1.012 g, 93%) as a white solid. LC/MS: m/z (M+H)=170.0. 1H-NMR (400 MHz, DMSO-d6) delta (ppm): 4.41 (2H, br s), 6.93 (1H, dd), 7.51 (1H, dd), 8.22 (1H, br s).
With hydrazine hydrate; In ethanol; water; STR112 11 g (0.22 mol) of hydrazine hydrate are added to 30 g (0.19 mol) of 2,4,5-trifluorobenzonitrile (cf., for example, EP-A 191,181) in 120 ml of ethanol, the mixture is heated at reflux temperature for 2 hours, cooled to room temperature and concentrated in vacuo, the residue is stirred with 50 ml of water, and any product which has precipitated is filtered off with suction and dried. 24 g (75% of theory) of 4-cyano-2,5-difluorophenylhydrazine of melting point 158 C. are obtained.
With hydrazine hydrate; In ethanol; water; Example II-1 11 g (0.22 mol) of hydrazine hydrate are added to 30 g (0.19 mol) of 2,4,5-trifluorobenzonitrile (cf., for example, EP-A 191,181) in 120 ml of ethanol, the mixture is heated at reflux temperature for 2 hours, cooled to room temperature and concentrated in vacuo, the residue is stirred with 50 ml of water, and any product which has precipitated is filtered off with suction and dried. 24 g (75% of theory) of 4-cyano-2,5-difluorophenylhydrazine of melting point 158 C. are obtained.
  • 3
  • [ 349-58-6 ]
  • [ 98349-22-5 ]
  • 4-[3,5-bis(trifluoromethyl)phenoxy]-2,5-difluorobenzonitrile [ No CAS ]
YieldReaction ConditionsOperation in experiment
94% With potassium carbonate; In N,N-dimethyl-formamide; at 20℃;Inert atmosphere; <strong>[349-58-6]3,5-Bis(trifluoromethyl)phenol</strong> (300 mg, 1 .30 mmol, 1 .00 equiv), N,N-2,4,5-trifluorobenzonitrile (205 mg, 1 .30 mmol, 1 .00 equiv), and potassium carbonate (359 mg, 2.60 mmol, 1 .99 equiv) were dissolved in 10 m L of DMF under an inert atmosphere of nitrogen. The mixture was then stirred overnight at room temperature and quenched by the addition of 100 m L of water. The resulting solution was extracted with 3x50 mL of ethyl acetate and the combined organic layers were concentrated in vacuo. The residue was purified by silica gel column chromatography with an eluent of ethyl acetate/petroleum ether (1 :20). This resulted in 450 mg (94percent) of 4-[3,5-bis(trifluoromethyl)phenoxy]-2,5-difluorobenzonitrile as a white solid.
 

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