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Chemical Structure| 83227-42-3 Chemical Structure| 83227-42-3

Structure of 83227-42-3

Chemical Structure| 83227-42-3

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Product Details of [ 83227-42-3 ]

CAS No. :83227-42-3
Formula : C13H9Cl2NO
M.W : 266.12
SMILES Code : ClC1=CC=C(C(CC2=CC=CN=C2)=O)C(Cl)=C1

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Application In Synthesis of [ 83227-42-3 ]

* 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 [ 83227-42-3 ]

[ 83227-42-3 ] Synthesis Path-Downstream   1~1

  • 1
  • [ 39931-77-6 ]
  • [ 56882-52-1 ]
  • [ 83227-42-3 ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; ammonia; sodium methylate; Example 4 The 2',4'-dichloro-2-(3-pyridyl)-acetophenone required as the starting material in Example 1 can be prepared as follows: A mixture of 27.6 g of <strong>[56882-52-1]ethyl 2,4-dichlorobenzoate</strong> and 20.81 g of ethyl 3-pyridylacetate at 20-25 is treated portionwise with 10.59 g of sodium methoxide. The mixture is subsequently heated at 65-70 and resulting readily volatile products are blown off with dry nitrogen. After 20 hours, the mixture is treated with 40 ml of concentrated hydrochloric acid and heated at reflux temperature for 18 hours. The mixture is washed with diethyl ether and the aqueous phase is made basic by adding concentrated ammonia and extracted with methylene chloride. The organic phase is concentrated and the crude product is chromatographed on silica gel with methylene chloride/methanol (98:2) to yield 2',4'-dichloro-2-(3-pyridyl)-acetophenone, which can be crystallized from diethyl ether/n-pentane and melts at 55-56.
 

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