Hydrochloric Acid → HCID 178487229, compound

Reaction equation

[NH:1]1[C:5]2=[N:6][CH:7]=[CH:8][CH:9]=[C:4]2[C:3](/[CH:10]=[C:11]2\[O:12][C:13]3[C:20]([CH2:21][N:22]4[CH2:27][CH2:26][N:25](C(OC(C)(C)C)=O)[CH2:24][CH2:23]4)=[C:19]([O:35][CH3:36])[CH:18]=[CH:17][C:14]=3[C:15]\2=[O:16])=[N:2]1.Cl>C(Cl)Cl.O1CCOCC1>[NH:1]1[C:5]2=[N:6][CH:7]=[CH:8][CH:9]=[C:4]2[C:3](/[CH:10]=[C:11]2\[O:12][C:13]3[C:20]([CH2:21][N:22]4[CH2:23][CH2:24][NH:25][CH2:26][CH2:27]4)=[C:19]([O:35][CH3:36])[CH:18]=[CH:17][C:14]=3[C:15]\2=[O:16])=[N:2]1

Participants

Procedure

A solution of tert-butyl (Z)-4-({2-[(1H-pyrazolo[3,4-b]pyridin-3-yl)methylene]-6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate (0.0352 g, 0.0716 mmol) in methylene chloride (2 mL) was added with a 4 M solution of hydrogen chloride in 1,4-dioxane (2 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, then the solvent was evaporated, and the resulting residue was purified by silica gel column chromatography (aminopropyl silica was used, chloroform/methanol) to obtain (Z)-2-[(1H-pyrazolo[3,4-b]pyridin-3-yl)methylene]-6-methoxy-7-(piperazin-1-ylmethyl)benzofuran-3(2H)-one (0.0213 g, 76%).