6-Chloro-1H-pyrrolo[2,3-b]pyridine-3-carbaldehyde → HCID 86681993, compound

HRID 1749803Notes

Reaction equation

[OH:1][C:2]1[CH:11]=[CH:10][C:5]2[C:6](=[O:9])[CH2:7][O:8][C:4]=2[C:3]=1[CH2:12][N:13]1[CH2:18][CH2:17][N:16]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:15][CH2:14]1.[Cl:26][C:27]1[N:32]=[C:31]2[NH:33][CH:34]=[C:35]([CH:36]=O)[C:30]2=[CH:29][CH:28]=1>CO.N1CCCCC1>[Cl:26][C:27]1[N:32]=[C:31]2[NH:33][CH:34]=[C:35](/[CH:36]=[C:7]3\[O:8][C:4]4[C:3]([CH2:12][N:13]5[CH2:14][CH2:15][N:16]([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:17][CH2:18]5)=[C:2]([OH:1])[CH:11]=[CH:10][C:5]=4[C:6]\3=[O:9])[C:30]2=[CH:29][CH:28]=1

Participants

Conditions

Temperature: 60 °C

Procedure

A solution of tert-butyl 4-[(6-hydroxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.020 g, 0.057 mmol) obtained in Example A16, Step 1 in methanol (2.0 mL) was added with 6-chloro-1H-pyrrolo[2,3-b]pyridine-3-carboxaldehyde (0.009 g, 0.057 mmol). Then, the mixture was added with 5 drops of piperidine, and the mixture was stirred at 60° C. for 1 hour. The solvent was evaporated under reduced pressure, and then the residue was subjected to silica gel column chromatography (eluted with chloroform/methanol (95:5→90:10)) to obtain tert-butyl (Z)-4-({2-[(6-chloro-1H-pyrrolo[2,3-b]pyridin-3-yl)methylene]-6-hydroxy-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate (0.020 g, 69%).

Workup

customThe solvent was evaporated under reduced pressure
washthe residue was subjected to silica gel column chromatography (eluted with chloroform/methanol (95:5→90:10))

Sources & evidence

ORD record: ord-a758effa881b4ad6a176ff25af2f9e66
Source dataset: uspto-grants-2015_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09156827B2

Reaction notes

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