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Chemical Structure| 1204572-73-5 Chemical Structure| 1204572-73-5

Structure of 1204572-73-5

Chemical Structure| 1204572-73-5

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Product Details of [ 1204572-73-5 ]

CAS No. :1204572-73-5
Formula : C7H5FN2O2S
M.W : 200.19
SMILES Code : O=S(C1=CC(C#N)=CC=C1F)(N)=O
MDL No. :MFCD18205791

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Application In Synthesis of [ 1204572-73-5 ]

* 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 [ 1204572-73-5 ]

[ 1204572-73-5 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 859855-53-1 ]
  • [ 1204572-73-5 ]
  • 2
  • [ 1101120-80-2 ]
  • [ 1204572-73-5 ]
YieldReaction ConditionsOperation in experiment
With ammonium hydroxide; 3-Amino-4-fluorobenzonitrile (2) (2 g, 0.015 mol) in acidic medium (28 mL HCl 6 N) reacted with sodium nitrite (1.4 g in2 mL of water). The resulting solution of diazonium salt was mixed with a solution of sulphur dioxide in acetic acid in the presence of CuCl2 (0.8 g in 2 mL of water) to generate <strong>[1101120-80-2]3-chlorosulfonyl-4-fluorobenzonitrile</strong> (3) according to the Meerwein variation of Sandmeyer reaction. Compound 3 was pouredinto a solution of ammonium hydroxide and gently heated,resulting in the synthesis of intermediate 4-fluoro-3-sulfamoylbenzonitrile (4) (Yield: 40e65percent).
With ammonia; In tetrahydrofuran; methanol; for 0.5h;Cooling with ice; A solution of ammonia (7 M in MeOH, 4.5 mL, 31.5 mmol) is cooled in iced water and solution of <strong>[1101120-80-2]5-cyano-2-fluorobenzenesulfonyl chloride</strong> (SM 8.1, 0.99 g, 4.51 mmol) in THF (20 mL) is added drop wise. The reaction mixture is stirred for 30 minutes, after which time LC-MS analysis shows the reaction to be complete. The reaction mixture is concentrated under vacuum, water (40 ml) added and then extracted with DCM (100 ml then 2 x 50 mL). The organic phases are passed through a phase separator, combined and concentrated to dryness under vacuum to give 5-cyano-2-fluoro-benzenesulfonamide (i-7.1) as a white solid that is used without further purification.
 

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