Water → 3-[N-Propyl-N-(4-phthalimidobutyl)amino]-5-methoxychroman

HRID 1655973Notes

Reaction equation

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

Participants

Conditions

Temperature: 60 °C

Procedure

1.5 mmol of the compound prepared in Example 1 is dissolved in 10 ml of dimethylformamide in the presence of 4.4 mmol of 1-iodopropane and 4.4 mmol of potassium carbonate. After 24 hours, stirring at 60° C., the solvent is evaporated off and the crude reaction mixture is taken up with 10 ml of water and extracted with dichloromethane. The organic phase is dried and evaporated and the expected product is obtained after purification by chromatography on a silica column (elution solvent: ether/petroleun ether, 1:99).

Workup

customthe solvent is evaporated off
customthe crude reaction mixture
extractionextracted with dichloromethane
customThe organic phase is dried
customevaporated

Sources & evidence

ORD record: ord-8d5c40c54f76486e9eb268a37fd0bdf7
Source dataset: uspto-grants-1993_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05252578

Reaction notes

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