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Chemical Structure| 174469-41-1 Chemical Structure| 174469-41-1

Structure of 174469-41-1

Chemical Structure| 174469-41-1

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Product Details of [ 174469-41-1 ]

CAS No. :174469-41-1
Formula : C12H7BrN2O
M.W : 275.10
SMILES Code : BrC1=CN=C2C(OC(C3=CC=CC=C3)=N2)=C1

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Application In Synthesis of [ 174469-41-1 ]

* 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 [ 174469-41-1 ]

[ 174469-41-1 ] Synthesis Path-Downstream   1~3

  • 1
  • [ 39903-01-0 ]
  • [ 65-85-0 ]
  • [ 174469-41-1 ]
YieldReaction ConditionsOperation in experiment
84% Synthesis Example 7 Synthesis of Exemplified Compound No. 32 2-amino-5-bromopyridin-3-ol [19] was synthesised by the method described in Heterocycles, 55, 1329 (2001). Then, 6-bromo-2-phenyl-oxazolo[4,5-b]pyridine [21] (pale yellow crystal) was obtained from [19] and benzoic acid [20] in 84percent yield. The following compounds were placed in a 300-ml three-necked flask, and the mixture was stirred under nitrogen atmosphere at room temperature. During the stirring, an aqueous solution of 3 g of sodium carbonate in 30 ml of water was added dropwise to the mixture. 1.95 g (7.09 mmol) of 2-amino-5-bromopyridine-3-ol [19] 1.50 g (3.36 mmol) of a 9,9-dimethylfluorene-2,7-diboronic acid pinacol ester [4] 75 ml of toluene and 38 ml of ethanol Next, 0.39 g (0.34 mmol) of tetrakis(triphenylphosphine)palladium(0) was added to the mixture. After the mixture was stirred at room temperature for 10 minutes, the temperature of the mixture was increased to 78° C., and the mixture was stirred under heating and reflux for 4 hours. The reaction liquid was filtrated, and the resultant crude product was dissolved in 300 ml of chloroform at 70° C. The solution was purified with a silica gel column (toluene/acetic ether 5/1), whereby 1.53 g of Exemplified Compound No. 32 (white crystal) was obtained (78percent yield).
  • 3
  • [ 102-96-5 ]
  • [ 39903-01-0 ]
  • [ 174469-41-1 ]
 

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