1-Hydroxybenzotriazole → ethyl (2E)-3-[6-({1-[4-(1H-pyrrol-1-yl)benzoyl]-4-piperidyl}amino)-3-pyridyl]acrylate

HRID 2376020Notes

Reaction equation

Cl.Cl.[NH:3]1[CH2:8][CH2:7][CH:6]([NH:9][C:10]2[N:15]=[CH:14][C:13](/[CH:16]=[CH:17]/[C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:12][CH:11]=2)[CH2:5][CH2:4]1.[N:23]1([C:28]2[CH:36]=[CH:35][C:31]([C:32](O)=[O:33])=[CH:30][CH:29]=2)[CH:27]=[CH:26][CH:25]=[CH:24]1.CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1>CN(C=O)C.CCOC(C)=O.O.CCN(CC)CC>[N:23]1([C:28]2[CH:36]=[CH:35][C:31]([C:32]([N:3]3[CH2:8][CH2:7][CH:6]([NH:9][C:10]4[N:15]=[CH:14][C:13](/[CH:16]=[CH:17]/[C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:12][CH:11]=4)[CH2:5][CH2:4]3)=[O:33])=[CH:30][CH:29]=2)[CH:27]=[CH:26][CH:25]=[CH:24]1

Participants

Conditions

Temperature: 23 °C

Procedure

To a suspension of ethyl (2E)-3-[6-(4-piperidylamino)-3-pyridyl]acrylate dihydrochloride (500 mg) in DMF (5 ml) was added 4-(1H-pyrrol-1-yl)benzoic acid (309 mg), EDCI HCl (317 mg), HOBt (223 mg), Et3N (0.63 ml), the mixture was stirred at 23° C. for 8 hours. The mixed solution was poured into a mixture of water (20 ml) and AcOEt (20 ml). The organic layer was separated, washed with water twice and brine, dried over sodium sulfate and concentrated in vacuo. The residue was purified by silica gel column chromatography eluted with 5% MeOH in dichloromethane to give ethyl (2E)-3-[6-({1-[4-(1H-pyrrol-1-yl)benzoyl]-4-piperidyl}amino)-3-pyridyl]acrylate (686 mg).

Workup

customThe organic layer was separated
washwashed with water twice
dry with materialbrine, dried over sodium sulfate
concentrationconcentrated in vacuo
customThe residue was purified by silica gel column chromatography
washeluted with 5% MeOH in dichloromethane

Sources & evidence

ORD record: ord-539b0555c8834ebdabbd9b551912db1b
Source dataset: uspto-grants-2008_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07465731B2

Reaction notes

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