Piperidine → HCID 178487050, compound

HRID 1749965Notes

Reaction equation

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

Participants

Conditions

Temperature: 60 °C

Procedure

A solution of tert-butyl 4-[(6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperidine-1-carboxylate (0.0518 g, 0.143 mmol) in methanol (5 mL) was added with 1H-indazole-3-carboxaldehyde (0.0220 g, 0.151 mmol) and piperidine (0.100 mL, 1.01 mmol), and the mixture was stirred at 60° C. for 2 hours. The reaction mixture was concentrated, and the resulting residue was purified by silica gel column chromatography (chloroform/ethyl acetate) to obtain tert-butyl (Z)-4-({2-[(1H-indazol-3-yl)methylene]-6-methoxy-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperidine-1-carboxylate (0.0525 g, 75%).

Workup

concentrationThe reaction mixture was concentrated
customthe resulting residue was purified by silica gel column chromatography (chloroform/ethyl acetate)

Sources & evidence

ORD record: ord-4d4f39585ee14579acca180faff36501
Source dataset: uspto-grants-2015_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09156827B2

Reaction notes

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