Trifluoroacetic acid → 5-Chloro-N-[(5-chloro-2-thienyl)sulfonyl]-N-[4-(methyloxy)-1H-indazol-3-yl]-2-thiophenesulfonamide

HRID 1892895Notes

Reaction equation

HRID 1892895 reaction equation
[Cl:1][C:2]1[S:6][C:5]([S:7]([N:10]([S:29]([C:32]2[S:33][C:34]([Cl:37])=[CH:35][CH:36]=2)(=[O:31])=[O:30])[C:11]2[C:19]3[C:14](=[CH:15][CH:16]=[CH:17][C:18]=3[O:20][CH3:21])[N:13](C(OC(C)(C)C)=O)[N:12]=2)(=[O:9])=[O:8])=[CH:4][CH:3]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl.O>[Cl:37][C:34]1[S:33][C:32]([S:29]([N:10]([S:7]([C:5]2[S:6][C:2]([Cl:1])=[CH:3][CH:4]=2)(=[O:8])=[O:9])[C:11]2[C:19]3[C:14](=[CH:15][CH:16]=[CH:17][C:18]=3[O:20][CH3:21])[NH:13][N:12]=2)(=[O:30])=[O:31])=[CH:36][CH:35]=1

Participants

5

Reactant 2

HCID 6422Trifluoroacetic acidHCID 580544561,1-dimethylethyl 3-{bis[(5-chloro-2-thienyl)sulfonyl]amino}-4-(methyloxy)-1H-indazole-1-carboxylate

Product 1

HCID 580544545-Chloro-N-[(5-chloro-2-thienyl)sulfonyl]-N-[4-(methyloxy)-1H-indazol-3-yl]-2-thiophenesulfonamide

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent2×

Procedure

To a cooled, ice/water bath, solution of 1,1-dimethylethyl 3-{bis[(5-chloro-2-thienyl)sulfonyl]amino}-4-(methyloxy)-1H-indazole-1-carboxylate (for a preparation see Intermediate 9) (4.17 g, 6.68 mmol) in DCM (20 mL) was added TFA (10.29 mL, 134 mmol) and the solution was stirred at room temperature for 4 hours. The reaction mixture was diluted with DCM (100 mL) and water (50 mL). The organic phase was passed through an hydrophobic frit and the solvent was removed in vacuo to give the product (3.78 g) as a white solid. This was dried in vacuo at 45° C. for 2 days to give the title compound (3.55 g, 100%) as a white solid. LCMS (System A) RT=1.33 min, ES+ve m/z 524/526/528 (M+H)+.

Workup

  1. customthe solvent was removed in vacuo

Sources & evidence

ORD record
ord-6cc75574789740c1bafdab5880e157cb
Source dataset
uspto-grants-2013_08
Patent number
US08507543B2

Reaction notes

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