Potassium Carbonate → 4-{1-[4-(1,3-Dioxo-1,3,3a,7a-tetrahydroisoindol-2-yl)butyl]piperidin-4-yl}butyric acid methyl ester

HRID 1097289Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1097289
[CH3:1][O:2][C:3](=[O:13])[CH2:4][CH2:5][CH2:6][CH:7]1[CH2:12][CH2:11][NH:10][CH2:9][CH2:8]1.C([O-])([O-])=O.[K+].[K+].I[CH2:21][CH2:22][CH2:23][CH2:24][N:25]1[C:33](=[O:34])[CH:32]2[CH:27]([CH:28]=[CH:29][CH:30]=[CH:31]2)[C:26]1=[O:35]>CC(C)=O>[CH3:1][O:2][C:3](=[O:13])[CH2:4][CH2:5][CH2:6][CH:7]1[CH2:12][CH2:11][N:10]([CH2:21][CH2:22][CH2:23][CH2:24][N:25]2[C:33](=[O:34])[CH:32]3[CH:27]([CH:28]=[CH:29][CH:30]=[CH:31]3)[C:26]2=[O:35])[CH2:9][CH2:8]1

Komponenten

5

Edukt 3

HCID 11430Potassium CarbonateHCID 21462751Methyl 4-(piperidin-4-yl)butanoateHCID 668110452-(4-Iodobutyl)-3a,7a-dihydroisoindole-1,3-dione

Produkt 1

HCID 668112194-{1-[4-(1,3-Dioxo-1,3,3a,7a-tetrahydroisoindol-2-yl)butyl]piperidin-4-yl}butyric acid methyl esterAusbeute 40 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

To a suspension of 2 (1.96 g, 8.86 mmol), K2CO3 (2.82 g, 17.72 mmol) and acetone (100 mL) was added 2-(4-iodobutyl)-3a,7a-dihydroisoindole-1,3-dione (2.93 g, 8.86 mmol). The newly formed suspension was stirred at ambient temperature for 48 hours. The solid was vacuum filtered and the filtrate was concentrated under vacuum. The resulting residue was subjected to column chromatography eluting with 0-100% ethyl acetate in hexanes to afford the desired product 3 (0.63 g, 40%) as a white solid: 1H NMR (500 MHz; CDCl3) δ 1.16-1.28 (m, 3H), 1.65 (m, 2H), 1.60-1.72 (m, 4H), 1.86 (m, 2H), 2.26 (t, 2H), 2.32 (t, 2H), 2.88 (d, 2H) 3.64 (s, 3H), 3.70 (t, 2H), 7.68 (d, 2H), 7.72 (d, 2H).

Aufarbeitung

  1. filtrationfiltered
  2. concentrationthe filtrate was concentrated under vacuum
  3. washeluting with 0-100% ethyl acetate in hexanes

Quellen und Nachweise

ORD-Eintrag
ord-bd9a0a83445a4034b9c4bff40b2be306
Quelldatensatz
uspto-grants-2012_03
Patentnummer
US08143256B2

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