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Chemical Structure| 110234-68-9 Chemical Structure| 110234-68-9

Structure of 110234-68-9

Chemical Structure| 110234-68-9

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Product Details of [ 110234-68-9 ]

CAS No. :110234-68-9
Formula : C4H2F3NO
M.W : 137.06
SMILES Code : N#CCC(C(F)(F)F)=O
MDL No. :MFCD11099951

Safety of [ 110234-68-9 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H225-H301-H315-H319-H335
Precautionary Statements:P210-P261-P301+P310-P305+P351+P338
Class:3(6.1)
UN#:1992
Packing Group:

Application In Synthesis of [ 110234-68-9 ]

* 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 [ 110234-68-9 ]

[ 110234-68-9 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 110234-68-9 ]
  • [ 852443-61-9 ]
YieldReaction ConditionsOperation in experiment
45% With hydrogenchloride; hydrazine hydrochloride; In water; for 2h;Reflux; The obtained trifluoroacetoacetonitrile (27.4 g, 200 mmol) was mixed with water (200 ml), and hydrazine monohydrochloride (15.1 g, 220 mmol) and 35% concentrated hydrochloric acid (41.7 g, 400 mmol) were sequentially added thereto And the mixture was stirred under heating reflux for 2 hours. After standing to cool, potassium carbonate was added to the reaction mixture to make it basic, followed by extraction three times with ethyl acetate (100 ml). The organic layers were combined, washed with saturated brine (100 ml), and dried over anhydrous sodium sulfate. The organic layer was concentrated under reduced pressure, and the resulting residue was purified by silica gel column chromatography to obtain the desired product (13.5 g, yield: 45%).
16% With hydrazine; In ethanol; for 5h;Heating / reflux; A solution of 4, 4, 4-trifluoro-3-oxo-butyronitrile (Method 23; 11.0 g, 0. 080 mol) and hydrazine monohydrate (3.89 ml, 0. 080 mol) inEtOH (400 ml) was heated at reflux for 5 hours. After cooling to25'C, the solvent was removed under reduced pressure. The resulted residue was dissolved in DCM (500 ml), washed with brine (2 x 200ml), and dried overNa2S04. After evaporation of the solvent, the resulted residue was purified by column chromatography (hexane: EtOAc = 1 : 1) to give the title compound as a pale yellow solid (1.93 g, 16%). 1H NMR (400 MHz) : 8 5.35 (s, 2 H), 5.56 (s,1 H), 12.10 (br s,1 H).
2% With hydrazine; In ethanol; for 8h;Heating / reflux; Step B. A mixture of the title compound from Step A above (12.5 g) and hydrazine monohydrate (6.0 g) in absolute EtOH (300 mL) was heated to reflux under a nitrogen atmosphere for 8 h, cooled to room temperature and concentrated. The remaining oil was taken up in CH2Cl2 (150 mL), washed with saturated aqueous NaCl, dried (MgSO4), filtered, concentrated and purified by chromatography (silica, CH2Cl2/Me0H) to give the title compound (0.25 g, 2%). [MH]+ = 152.
  • 2
  • [ 110234-68-9 ]
  • [ 75-75-2 ]
  • [ 852443-61-9 ]
YieldReaction ConditionsOperation in experiment
102 mg With hydrazine hydrate; at 80℃; 1.16 g of intermediate IX and 4.5 ml of hydrazine hydrate were mixed.Add 5.7 ml of methanesulfonic acid dropwise.After the addition was completed, the reaction was carried out at 80 C overnight.After the reaction is over,Vacuum distillation,The residue was dissolved in ethyl acetate: n-hexane = 1:1.Stir for 5 minutes,Filtering,The filtrate is distilled under reduced pressure,After concentration, the column was separated by an eluent (methanol: dichloromethane = 1:60, v/v).Obtained 102 mg (intermediate X) as a pale yellow oil.Embodiment 5 and Embodiment 6,The total yield in two steps was 8%.
 

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