Sodium Hydroxide → 6-Chloro-7-(4-(4-chloro-2-cyclopropylphenethylcarbamoyl)phenoxy)chroman-4-carboxylic acid

HRID 1048188Notes

Reaction equation

HRID 1048188 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[O:12][C:13]1[CH:18]=[CH:17][C:16]([C:19](=[O:33])[NH:20][CH2:21][CH2:22][C:23]3[CH:28]=[CH:27][C:26]([Cl:29])=[CH:25][C:24]=3[CH:30]3[CH2:32][CH2:31]3)=[CH:15][CH:14]=1)[O:8][CH2:7][CH2:6][CH:5]2[C:34]([O:36]CC)=[O:35].[OH-].[Na+].C(Cl)(Cl)Cl.CO.CC(O)=O>O1CCCC1.C(O)C.CCOC(C)=O.Cl>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[O:12][C:13]1[CH:14]=[CH:15][C:16]([C:19](=[O:33])[NH:20][CH2:21][CH2:22][C:23]3[CH:28]=[CH:27][C:26]([Cl:29])=[CH:25][C:24]=3[CH:30]3[CH2:32][CH2:31]3)=[CH:17][CH:18]=1)[O:8][CH2:7][CH2:6][CH:5]2[C:34]([OH:36])=[O:35]

Participants

8

Reactant 3

HCID 14798Sodium HydroxideHCID 21866353chloroform methanol HOAcHCID 67080987Ethyl 6-chloro-7-(4-(4-chloro-2-cyclopropylphenethylcarbamoyl)phenoxy)chroman-4-carboxylate

Product 1

HCID 670802826-Chloro-7-(4-(4-chloro-2-cyclopropylphenethylcarbamoyl)phenoxy)chroman-4-carboxylic acidYield 77.3%

Reagents, catalysts & solvents 4

HCID 313Hydrochloric AcidSolventHCID 702EthanolSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a stirred solution of ethyl 6-chloro-7-(4-(4-chloro-2-cyclopropylphenethylcarbamoyl)phenoxy)chroman-4-carboxylate (83 mg; 0.15 mmol) in a mixture of 1.4 mL tetrahydrofuran and 0.7 mL ethanol at ambient temperature was added 0.60 mL of 1M aqueous sodium hydroxide. The resulting slightly cloudy mixture was vigorously stirred at ambient temperature for 1 hour, after which the reaction was determined to be complete by thin layer chromatography (90/10/1 chloroform/methanol/HOAc). The reaction mixture was diluted with 5 mL EtOAc and 2.5 mL of 1M HCl, then transferred to a separatory funnel. After shaking, the organic layer was washed with 2 mL brine, then dried over sodium sulfate and evaporated to give 61 mg of 6-chloro-7-(4-(4-chloro-2-cyclopropylphenethylcarbamoyl)phenoxy)chroman-4-carboxylic acid as a colorless oil. MS (apci, pos) m/z=526

Workup

  1. customtransferred to a separatory funnel
  2. stirringAfter shaking
  3. washthe organic layer was washed with 2 mL brine
  4. dry with materialdried over sodium sulfate
  5. customevaporated

Sources & evidence

ORD record
ord-ba4bbbd4abcf483485335c0c1737b4e0
Source dataset
uspto-grants-2013_10
Patent number
US08569522B2

Reaction notes

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