Hydrochloric Acid → 6-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)benzofuran-3-carboxylic acid

HRID 2272370Notes

Reaction equation

HRID 2272370 reaction equation
O.[OH-].[Li+].[Br:4][C:5]1[CH:6]=[C:7]([N:11]([C:16]2[C:36]([CH:37]3[CH2:39][CH2:38]3)=[CH:35][C:19]3[C:20]([C:30]([O:32]CC)=[O:31])=[C:21]([C:23]4[CH:28]=[CH:27][C:26]([F:29])=[CH:25][CH:24]=4)[O:22][C:18]=3[CH:17]=2)[S:12]([CH3:15])(=[O:14])=[O:13])[CH:8]=[CH:9][CH:10]=1.CO.Cl>C1COCC1.O>[Br:4][C:5]1[CH:6]=[C:7]([N:11]([C:16]2[C:36]([CH:37]3[CH2:39][CH2:38]3)=[CH:35][C:19]3[C:20]([C:30]([OH:32])=[O:31])=[C:21]([C:23]4[CH:28]=[CH:27][C:26]([F:29])=[CH:25][CH:24]=4)[O:22][C:18]=3[CH:17]=2)[S:12]([CH3:15])(=[O:14])=[O:13])[CH:8]=[CH:9][CH:10]=1

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 887MethanolHCID 168937Lithium hydroxide, monohydrateHCID 131732322ethyl 6-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)benzofuran-3-carboxylate

Product 1

HCID 1317323236-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)benzofuran-3-carboxylic acidYield 104.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

Lithium hydroxide monohydrate (68.5 mg, 1.630 mmol) was added to a suspension of ethyl 6-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)benzofuran-3-carboxylate (311 mg, 0.543 mmol) in THF:MeOH:water/3:1:1 (10 mL). The mixture was stirred at room temperature overnight. The mixture was acidified with 2N aqueous HCl and the volatile solvents were evaporated. The residue was partitioned between EtOAc and water. The organic layers were washed with brine, dried over sodium sulfate and concentrated to give 6-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)benzofuran-3-carboxylic acid (309 mg, quantitative) as a yellow solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.01-8.13 (m, 2H) 7.77 (s, 1H) 7.66 (s, 1H) 7.54 (t, J=1.95 Hz, 1H) 7.39 (dd, J=8.21, 1.37 Hz, 1H) 7.30-7.36 (m, 1H) 7.17-7.26 (m, 3H) 3.27 (s, 3H) 2.11 (s, 1H) 0.74-1.18 (m, 3H) 0.48-0.74 (m, 1H). LCMS (m/z, ES+)=544, 546 (M+H, M+2).

Workup

  1. customthe volatile solvents were evaporated
  2. customThe residue was partitioned between EtOAc and water
  3. washThe organic layers were washed with brine
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-b922786204404b00a13d090a3df6480b
Source dataset
uspto-grants-2015_09
Patent number
US09119868B2

Reaction notes

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