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Chemical Structure| 74650-72-9 Chemical Structure| 74650-72-9

Structure of 74650-72-9

Chemical Structure| 74650-72-9

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Product Details of [ 74650-72-9 ]

CAS No. :74650-72-9
Formula : C7H7ClN2O2
M.W : 186.60
SMILES Code : O=C(N)C1=C(Cl)N=CC(OC)=C1

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Application In Synthesis of [ 74650-72-9 ]

* 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 [ 74650-72-9 ]

[ 74650-72-9 ] Synthesis Path-Downstream   1~3

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  • [ 74650-72-9 ]
  • [ 74650-73-0 ]
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  • [ 74650-70-7 ]
  • [ 74650-72-9 ]
  • 3
  • [ 74650-72-9 ]
  • [ 791-28-6 ]
  • [ 74650-73-0 ]
YieldReaction ConditionsOperation in experiment
6.2 g (86%) With trifluoromethylsulfonic anhydride; In dichloromethane; (E) Preparation of 2-chloro-5-methoxynicotinonitrile Into a flame dried flask under N2 was placed triphenylphosphine oxide (12.0 g, 0.04 mol) and CH2 Cl2 (50 mL) and the mixture cooled to 0-4 C. A solution of triflic anhydride (6.75 ml, 0.04 mol) in CH2 Cl2 (80 mL) was added dropwise. After the addition, the solution was stirred for 15 min. and 2-chloro-5-methoxynicotinamide (8.0 g, 0.04 mol) was added portionwise over 15 minutes. The mixture was allowed to warm to room temperature with stirring overnight, poured into saturated Na2 CO3 solution and extracted with CHCl3 (2*). After concentration, the residue was chromatographed on silica gel and the product eluted with CHCl3 to yield 6.2 g (86%) of 2-chloro-5-methoxynicotinonitrile 1 H NMR (CDCl3) delta3.9 (3H, s), 7.5 (1H, d, J=3) and 8.3 (1H, d, J=3); (nujol) 2250 cm- 1.
6.2 g (86%) With trifluoromethylsulfonic anhydride; In dichloromethane; (E) Preparation of 2-chloro-5-methoxynicotinonitrile Into a flame dried flask under N2 was placed triphenylphosphine oxide (12.0 g, 0.04 mol) and CH2 Cl2 (50 mL) and the mixture cooled to 0-4 C. A solution of triflic anhydride (6.75 ml, 0.04 mol) in CH2 Cl2 (80 mL) was added dropwise. After the addition, the solution was stirred for 15 min. and 2-chloro-5-methoxynicotinamide (8.0 g, 0.04 mol) was added portionwise over 15 minutes. The mixture was allowed to warm to room temperature with stirring overnight, poured into saturated Na2 CO3 solution and extracted with CHCl3 (2X). After concentration, the residue was chromatographed on silica gel and the product eluted with CHCl3 to yield 6.2 g (86%) of 2-chloro-5-methoxynicotinonitrile 1 H NMR (CDCl3) delta 3.9 (3H, s), 7.5 (1H, d, J=3) and 8.3 (1H, d, J=3); (nujol) 2250 cm-1.
 

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