Hydrochloric Acid → 3-(5-((1R,2S)-1-(4H-Benzo[d][1,3]dioxin-7-yl)-2-(2,2-difluoropropanamido)propoxy)-1H-indazol-1-yl)benzoic acid

HRID 1510602Notes

Reaction equation

HRID 1510602 reaction equation
[O:1]1[C:6]2[CH:7]=[C:8]([C@@H:11]([O:21][C:22]3[CH:23]=[C:24]4[C:28](=[CH:29][CH:30]=3)[N:27]([C:31]3[CH:32]=[C:33]([CH:41]=[CH:42][CH:43]=3)[C:34]([O:36]CC(C)C)=[O:35])[N:26]=[CH:25]4)[C@@H:12]([NH:14][C:15](=[O:20])[C:16]([F:19])([F:18])[CH3:17])[CH3:13])[CH:9]=[CH:10][C:5]=2[CH2:4][O:3][CH2:2]1.[OH-].[Li+].C(OCC)(=O)C.Cl>CO.C1COCC1.O>[O:1]1[C:6]2[CH:7]=[C:8]([C@@H:11]([O:21][C:22]3[CH:23]=[C:24]4[C:28](=[CH:29][CH:30]=3)[N:27]([C:31]3[CH:32]=[C:33]([CH:41]=[CH:42][CH:43]=3)[C:34]([OH:36])=[O:35])[N:26]=[CH:25]4)[C@@H:12]([NH:14][C:15](=[O:20])[C:16]([F:19])([F:18])[CH3:17])[CH3:13])[CH:9]=[CH:10][C:5]=2[CH2:4][O:3][CH2:2]1

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 8857Ethyl AcetateHCID 59272926Isobutyl 3-(5-((1R,2S)-1-(4H-benzo[d][1,3]dioxin-7-yl)-2-(2,2-difluoropropanamido)propoxy)-1H-indazol-1-yl)benzoate

Product 1

HCID 685799603-(5-((1R,2S)-1-(4H-Benzo[d][1,3]dioxin-7-yl)-2-(2,2-difluoropropanamido)propoxy)-1H-indazol-1-yl)benzoic acidYield 100.5%

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

Isobutyl 3-(5-((1R,2S)-1-(4H-benzo[d][1,3]dioxin-7-yl)-2-(2,2-difluoropropanamido)propoxy)-1H-indazol-1-yl)benzoate (I5a) (398 mg, 0.67 mmol) was dissolved in methanol (3 mL) and THF (3.0 mL). Lithium hydroxide (0.032 mL, 2.01 mmol) dissolved in water (2.5 mL) was added. A clear slightly pink solution was obtained. After 2 h the solution was ice-cold. Ethyl acetate was added and then hydrochloric acid (1M) to acidic pH. The water phase was once more extracted with ethyl acetate. The collected organic phases were dried over magnesium sulfate and evaporated. It was dissolved in methanol and the solution was applied onto a 1 g SCX column. The methanol eluate (ca 15 mL) was concentrated. Freeze-drying from acetonitrile/water gave the title compound (362 mg, 100%).

Workup

  1. additionwas added
  2. customA clear slightly pink solution was obtained
  3. extractionThe water phase was once more extracted with ethyl acetate
  4. dry with materialThe collected organic phases were dried over magnesium sulfate
  5. customevaporated
  6. dissolutionIt was dissolved in methanol
  7. concentrationThe methanol eluate (ca 15 mL) was concentrated
  8. dry with materialFreeze-drying from acetonitrile/water

Sources & evidence

ORD record
ord-1a10e7c865874893bb0019a6e081a708
Source dataset
uspto-grants-2012_07
Patent number
US08211930B2

Reaction notes

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