Hydrochloric Acid → HCID 178487162, compound

HRID 1749956Notes

Reaction equation

HRID 1749956 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](/[CH:21]=[CH: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](/[CH:21]=[CH: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 178487165HCID 178487165, compound

Product 1

HCID 178487162HCID 178487162, compoundYield 75.4%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 312751,4-DioxaneSolvent

Procedure

A solution of tert-butyl 4-((Z)-4-{(Z)-2-[(1H-indazol-3-yl)methylene]-6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl}but-3-enyl)piperazine-1-carboxylate (0.0672 g, 0.127 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-[(Z)-4-(piperazin-1-yl)but-1-enyl]benzofuran-3(2H)-one (0.0412 g, 75%).

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-66396901b417414e8b025e8e28964620
Source dataset
uspto-grants-2015_10
Patent number
US09156827B2

Reaction notes

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