Hydrochloric Acid → HCID 178487164, compound

HRID 1749959Notes

Reaction equation

HRID 1749959 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3](/[CH:10]=[C:11]2\[O:12][C:13]3[C:20]([CH2:21][CH2:22][CH2:23][CH2:24][N:25]4[CH2:30][CH2:29][N:28](C(OC(C)(C)C)=O)[CH2:27][CH2:26]4)=[C:19]([O:38][CH3:39])[CH:18]=[CH:17][C:14]=3[C:15]\2=[O:16])=[N:2]1.Cl>C(Cl)Cl.O1CCOCC1>[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3](/[CH:10]=[C:11]2\[O:12][C:13]3[C:20]([CH2:21][CH2:22][CH2:23][CH2:24][N:25]4[CH2:26][CH2:27][NH:28][CH2:29][CH2:30]4)=[C:19]([O:38][CH3:39])[CH:18]=[CH:17][C:14]=3[C:15]\2=[O:16])=[N:2]1

Participants

5

Reactant 2

HCID 313Hydrochloric AcidHCID 178487167HCID 178487167, compound

Product 1

HCID 178487164HCID 178487164, compoundYield 68.4%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 312751,4-DioxaneSolvent

Procedure

A solution of tert-butyl (Z)-4-(4-{2-[(1H-indazol-3-yl)methylene]-6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl}butyl)piperazine-1-carboxylate (0.0945 g, 0.177 mmol) in methylene chloride (3 mL) was added with a 4 M solution of hydrogen chloride in 1,4-dioxane (3 mL), and the mixture was stirred at room temperature for 2 hours. The reaction mixture was concentrated, the resulting residue was added with saturated aqueous sodium hydrogencarbonate, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and the solvent was evaporated to obtain (Z)-2-[(1H-indazol-3-yl)methylene]-6-methoxy-7-[4-(piperazin-1-yl)butyl]benzofuran-3(2H)-one (0.0524 g, 68%).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. additionthe resulting residue was added with saturated aqueous sodium hydrogencarbonate
  3. extractionthe mixture was extracted with ethyl acetate
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. customthe solvent was evaporated

Sources & evidence

ORD record
ord-a4a440b77e294760a11807e8ee625596
Source dataset
uspto-grants-2015_10
Patent number
US09156827B2

Reaction notes

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