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Chemical Structure| 569370-38-3 Chemical Structure| 569370-38-3

Structure of 569370-38-3

Chemical Structure| 569370-38-3

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Product Details of [ 569370-38-3 ]

CAS No. :569370-38-3
Formula : C9H6F3NO
M.W : 201.15
SMILES Code : N#CC1=CC(C(F)(F)F)=CC(CO)=C1

Safety of [ 569370-38-3 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P280-P305+P351+P338

Application In Synthesis of [ 569370-38-3 ]

* 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 [ 569370-38-3 ]

[ 569370-38-3 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 172023-97-1 ]
  • [ 557-21-1 ]
  • [ 569370-38-3 ]
YieldReaction ConditionsOperation in experiment
33% tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 20 - 90℃; for 1h; 3-(Hydroxymethyl)-5-(trifluoromethyl)benzonitrile. <strong>[172023-97-1](3-Bromo-5-(trifluoromethyl)phenyl)methanol</strong> (1.4 g, 5.5 mmol), tetrakis(triphenylphosphine) palladium(0) (0.64, 0.55 mmol) and zinc cyanide (388 mg, 3.31 mmol) were combined in dimethylformamide (6 mL). The reaction mixture degassed repeatedly using the freeze-thaw method. After warming to room temperature, the reaction was heated at 90 C. for 1 h, cooled to room temperature and concentrated. The crude product was dissolved in ethyl acetate, washed with water (2×), 1 N hydrochloric acid (2×), brine (2×), dried over sodium sulfate, and concentrated. Flash chromatography on silica gel gave 0.37 g (33%). LC/MS (HPLC method 3): tR=2.06 min, 202.02(MH)+.
tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 120℃; for 2h; (2) (3-Bromo-5-trifluoromethyl-phenyl)-methanol (33.9g) is dissolved in N,N-dimethylformamide (40OmL) and thereto are added zinc(II) cyanide (16.39g) and tetrakis(triphenylphosphine)palladium (7.68g) and the mixture is heated under nitrogen atmosphere at 120C for 2 hours. The reaction solution is allowed cool to room temperature, and filtered through Celite, and the filtrate is concentrated under reduced pressure. Thereto is added water and the mixture is extracted with ethyl acetate. The organic layer is washed with a saturated brine, dried over sodium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (hexane : ethyl acetate = 2: 1) to give 3- hydroxymethyl-5-trifluoromethyl-benzonitrile (23.4g). NMR (CDCl3): 2.09 (lH,t), 4.85 (2H,d), 7.83 (lH,s), 7.87 (2H,s)
tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 120℃; for 2h; (2) (3-Bromo-5-trifluoromethyl-phenyl)-methanol (33.9 g) is dissolved in N3N- dimethylformamide (40OmL) and thereto are added zinc(II) cyanide (16.39g) and tetrakis(triphenylphosphine)palladium (7.68 g) and the mixture is heated under nitrogen atmosphere at 12O0C for 2 hours. The reaction solution is allowed cool to room temperature, and filtered through Celite, and the filtrate is concentrated under reduced <n="56"/>.55pressure. Thereto is added water and the mixture is extracted with ethyl acetate. The organic layer is washed with a saturated brine, dried over sodium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (hexane : ethyl acetate = 2:1) to give 3-hydroxymethyl~5- trifluoromethyl-benzonitrile (23.4g). NMR (CDCl3): 2.09 (lH,t), 4.85 (2H,d), 7.83 (lH,s), 7.87 (2H,s).
  • 2
  • [ 172023-97-1 ]
  • [ 73963-98-1 ]
  • [ 569370-38-3 ]
YieldReaction ConditionsOperation in experiment
61% tetrakis(triphenylphosphine) palladium(0); In N,N-dimethyl-formamide; at 160℃; for 0.333333h;Microwave irradition; STEP A: Preparation of 3-hydroxymethyl-5-trifluoromethyl-benzonitrile A mixture of <strong>[172023-97-1](3-bromo-5-trifluoromethyl-phenyl)-methanol</strong> (500 mg, 1.96 mmol), zinc cyanide (230 mg, 1.96 mmol) and tetrakis(triphenylphosphine) palladium (68 mg, 0.059 mmol) in DMF (2 ml) was heated by microwave at 160 C. for 20 minutes. The mixture was partitioned between ethyl ether (20 ml) and water (10 ml). The aqueous layer was extracted with ether and combined organic layers were washed with brine, dried (MgSO4) and concentrated in vacuo. The product was purified on Biotage column (12+M), eluding with 2% ethyl acetate in heptane (1 CV), 2-20% (10 CV), 20% (2CV) to yield the title compound (240 mg, 61%) as a colorless oil. 1H NMR (400 MHz, CDCl3) delta ppm 2.05 (s, 1H) 4.8 (s, 2H) 7.82 (s, 1H) 7.86 (s, 2H).
 

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