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Chemical Structure| 157665-51-5 Chemical Structure| 157665-51-5

Structure of 157665-51-5

Chemical Structure| 157665-51-5

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Product Details of [ 157665-51-5 ]

CAS No. :157665-51-5
Formula : C7H3ClFNO3
M.W : 203.56
SMILES Code : O=C(Cl)C1=CC=C([N+]([O-])=O)C(F)=C1
MDL No. :MFCD03094235

Safety of [ 157665-51-5 ]

GHS Pictogram:
Signal Word:Danger
Hazard Statements:H314
Precautionary Statements:P260-P264-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P321-P363-P405-P501
Class:8
UN#:3265
Packing Group:

Application In Synthesis of [ 157665-51-5 ]

* 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 [ 157665-51-5 ]

[ 157665-51-5 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 157665-51-5 ]
  • [ 108-59-8 ]
  • [ 72802-25-6 ]
YieldReaction ConditionsOperation in experiment
63% [0077] A mixture of MgCI2 (930 mg, 9.8 mmol), TEA (4.7 mL, 33.4 mmol) and dimethyl malonate (1.9 mL, 16.6 mmoi) was stirred at RT for 1.5 Ii before the above mentioned toluene solution of Compound 2 was added. The resulting mixture was stirred at RT for another 1 5 Ii before conc, HC1 (4 mE) was added and stirred for 5 minutes. The mixture was extracted with EtOAc (30 mL x 3), dried Na2SO4), filtered and concentrated under reduced pressure.[0078] To the residue was added 6N HC1 (30 ml. and the mixture was refiuxed overnight.[0079] The mixture was extracted with EtOAc (30 mL x 3), dried (Na2 SO4), filtered and concentrated under reduced pressure. The residue was purified via FCC (silica gel, EtOAc/Hexane) to afford Compound 3 as a light yellow solid (1.9 g, 63% yield).
1.9 g Compound 1 (3 g, 16.2 mmol) was refluxed in SOCl2(10 mL) with DMF (3 drops) for 3 h and then SOCl2was removed under vacuum. The residue was diluted with toluene (5mL) and was used in the following step without further purification.[0062] A mixture of MgCl2(930 mg, 9.8 mmol), TEA (4.7 mL, 33.4 mmol) and dimethyl malonate (1.9 mL, 16.6 mmol) was stirred at RT for 1.5 h followed by addition of the above mentioned toluene solution of Compound 2. The resulting mixture was stirred at RT for another 1.5 h then conc. HCl (4 mL) was added and stirred for 5 minutes. The mixture was extracted with EtOAc (30 mL x 3), dried (Na2SO4), filtered and concentrated under reduced pressure. To the residue was added 6N HCl (30 mL and the mixture was refluxed overnight. The mixture was extracted with EtOAc (30 mL x 3), dried (Na2SO4), filtered andconcentrated under reduced pressure. The residue was purified via FCC (silica gel,EtOAc/Hexane) to afford Compound 3 as a light yellow solid (1.9 g, 63% yield).[0063]1H NMR (CDCl3, 400 MHz) delta: 8.16 (d, J = 8.0 Hz, 1H), 7.86 (t, d = 9.2 Hz, 2H), 2.68 (s, 3H) ppm.
 

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