Water → HCID 18542746, compound

HRID 1268192Notes

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([O:14][C:15]2[CH:20]=[CH:19][C:18]([NH:21][CH2:22]/[CH:23]=[CH:24]/[C:25]3[CH:26]=[C:27]([CH:30]=[CH:31][CH:32]=3)[C:28]#[N:29])=[CH:17][CH:16]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(=O)([O-])[O-].[K+].[K+].Br[CH2:40][C:41]([O:43][CH2:44][CH3:45])=[O:42].O>CN(C)C=O>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([O:14][C:15]2[CH:20]=[CH:19][C:18]([N:21]([CH2:40][C:41]([O:43][CH2:44][CH3:45])=[O:42])[CH2:22]/[CH:23]=[CH:24]/[C:25]3[CH:32]=[CH:31][CH:30]=[C:27]([C:28]#[N:29])[CH:26]=3)=[CH:17][CH:16]=2)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 70 °C

Procedure

To a solution of 3-[3-[N-[4-(1-t-butoxycarbonylpiperidin-4-yloxy)phenyl]amino]-1-(E)-propenyl]benzonitrile (1.00 g) in N,N-dimethylformamide (20 ml) were added potassium carbonate (0.96 g) and ethyl bromoacetate (0.62 ml). The mixture was stirred at 70° C. for 9 hours. After addition of water, the reaction mixture was extracted with ethyl acetate. The extract was washed with brine. The organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. The residue was purified by chromatography on a silica gel column using hexane/ethyl acetate=2/1 as an eluant to give the desired compound (1.31 g, yield quantitative) as a yellow oil.

Workup

extractionthe reaction mixture was extracted with ethyl acetate
washThe extract was washed with brine
dry with materialThe organic layer was dried over anhydrous magnesium sulfate
filtrationfiltered
concentrationthe filtrate concentrated in vacuo
customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record: ord-9cd60a6f63a042f596046432d10f5279
Source dataset: uspto-grants-2003_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06555556B1

Reaction notes

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