Trifluoroacetic acid → 3-(1-(azetidin-3-ylmethyl)-1H-pyrazol-4-yl)-6-fluoro-1-(phenylsulfonyl)-1H-indole

HRID 2274783Notes

Reaction equation

HRID 2274783 reaction equation
[F:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:20]3[CH:21]=[N:22][N:23]([CH2:25][CH:26]4[CH2:29][N:28](C(OC(C)(C)C)=O)[CH2:27]4)[CH:24]=3)=[CH:7][N:8]2[S:11]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)(=[O:13])=[O:12])=[CH:4][CH:3]=1.C(O)(C(F)(F)F)=O>C(Cl)Cl>[NH:28]1[CH2:27][CH:26]([CH2:25][N:23]2[CH:24]=[C:20]([C:6]3[C:5]4[C:9](=[CH:10][C:2]([F:1])=[CH:3][CH:4]=4)[N:8]([S:11]([C:14]4[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=4)(=[O:12])=[O:13])[CH:7]=3)[CH:21]=[N:22]2)[CH2:29]1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 118060745tert-butyl 3-((4-(6-fluoro-1-(phenylsulfonyl)-1H-indol-3-yl)-1H-pyrazol-1-yl)methyl)azetidine-1-carboxylate2×

Product 1

HCID 1180607083-(1-(azetidin-3-ylmethyl)-1H-pyrazol-4-yl)-6-fluoro-1-(phenylsulfonyl)-1H-indoleYield 100%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of tert-butyl 3-((4-(6-fluoro-1-(phenylsulfonyl)-1H-indol-3-yl)-1H-pyrazol-1-yl)methyl)azetidine-1-carboxylate (Intermediate 37; 330 mg; 0.65 mmol) in DCM (10 mL) was added TFA (5 mL) dropwise. The reaction mixture was stirred for 0.5 hour and concentrated, neutralized with saturated aqueous Na2CO3 (50 mL), extracted with EtOAc (50 ml×2). The combined organic layers were dried over anhydrous Na2SO4, filtered, concentrated and purified by preparative TLC to afford 265 mg (100%) of the title compound as a brown solid.

Workup

  1. concentrationconcentrated
  2. extractionextracted with EtOAc (50 ml×2)
  3. dry with materialThe combined organic layers were dried over anhydrous Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. custompurified by preparative TLC

Sources & evidence

ORD record
ord-180c76cd29f2410c9cb601f23959709c
Source dataset
uspto-grants-2015_09
Patent number
US09126984B2

Reaction notes

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