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Chemical Structure| 33873-10-8 Chemical Structure| 33873-10-8

Structure of 33873-10-8

Chemical Structure| 33873-10-8

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Product Details of [ 33873-10-8 ]

CAS No. :33873-10-8
Formula : C4H2ClFN2
M.W : 132.52
SMILES Code : FC1=CN=CC(Cl)=N1

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Application In Synthesis of [ 33873-10-8 ]

* 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 [ 33873-10-8 ]

[ 33873-10-8 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 4774-14-5 ]
  • [ 121554-09-4 ]
  • [ 33873-10-8 ]
  • [ 148454-99-3 ]
YieldReaction ConditionsOperation in experiment
With potassium fluoride; sodium carbonate;tetrakis(triphenylphosphine)palladium (0); In ethanol; water; benzene; 1a 40.00 g (268.5 mmol) of 2,6-dichloropyrazine, 31.20 g (537.0 mmol) of potassium fluoride and 7.10 g (26.9 mmol) of 18-crown-6 are heated at 120 C. for 0.5 hours under atmospheric pressure and for 3 hours at a pressure of 160 mm/lHg, during which a colorless liquid distills over giving, after purification by vacuum distillation at a pressure of 160 mmHg, 22.59 g of 2-chloro-6-fluoropyrazine. STR14 1b 7.99 g (60.0 mmol) of 2-chloro-6-fluoropyrazine, 15.08 g (60.0 mmol) of <strong>[121554-09-4]4-octyloxyphenylboronic acid</strong>, 12.78 g (120.0 mmol) of sodium carbonate and 0.72 g (0.6 mmol) of tetrakis(triphenylphosphine)palladium(0) are heated at 80 C. for 2 hours in 400 ml of benzene, 300 ml of ethanol and 150 ml of water. The reaction mixture is partitioned between aqueous sodium chloride solution and ether, the organic phase is washed with aqueous sodium chloride solution, dried over sodium sulfate, filtered and freed from the solvents, and the residue is purified by chromatography (silica gel/hexane: ethyl acetate = 8:2). 17.18 g of 2-fluoro-6-(4-octyloxyphenyl)pyrazine are obtained. STR15 1c
  • 2
  • [ 143651-26-7 ]
  • [ 33873-10-8 ]
  • 2-fluoro-6-[4-(trans-4-pentylcyclohexyl)-phenyl]pyrazine [ No CAS ]
YieldReaction ConditionsOperation in experiment
3a In an analogous reaction to Example 1b, 2.17 g (16.41 mmol) of 2-chloro-6-fluoropyrazine (prepared as described in Example 1a) and 4.50 g (16.41 mmol) of <strong>[143651-26-7]4-(trans-4-pentylcyclohexyl)phenylboronic acid</strong> gives 3.36 g of 2-fluoro-6-[4-(trans-4-pentylcyclohexyl)-phenyl]pyrazine. STR19 3b
 

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