Potassium Iodide → 4-(5-chloro-2-{2-[4-(4-fluoro-benzyl)-(2R,5S)-2,5-dimethyl-piperazin-1-yl]-2-oxo-ethoxy}-pyridin-3-ylamino)-butyric acid ethyl ester

HRID 11718

Reaktionsgleichung

[NH2:1][C:2]1[C:3]([O:9][CH2:10][C:11]([N:13]2[CH2:18][C@H:17]([CH3:19])[N:16]([CH2:20][C:21]3[CH:26]=[CH:25][C:24]([F:27])=[CH:23][CH:22]=3)[CH2:15][C@H:14]2[CH3:28])=[O:12])=[N:4][CH:5]=[C:6]([Cl:8])[CH:7]=1.[CH2:29]([O:31][C:32](=[O:37])[CH2:33][CH2:34][CH2:35]Br)[CH3:30].C(=O)(O)[O-].[Na+].[I-].[K+].C(OC(=O)C(Br)CC)C>C(O)C>[CH2:29]([O:31][C:32](=[O:37])[CH2:33][CH2:34][CH2:35][NH:1][C:2]1[C:3]([O:9][CH2:10][C:11]([N:13]2[CH2:18][C@H:17]([CH3:19])[N:16]([CH2:20][C:21]3[CH:22]=[CH:23][C:24]([F:27])=[CH:25][CH:26]=3)[CH2:15][C@H:14]2[CH3:28])=[O:12])=[N:4][CH:5]=[C:6]([Cl:8])[CH:7]=1)[CH3:30]

Komponenten

Reaktionsbedingungen

Temperatur: 70 °C

Versuchsvorschrift

To a solution of 2-(3-amino-5-chloro-pyridin-2-yloxy)-1-[4-(4-fluoro-benzyl)-(2R,5S)-2,5-dimethyl-piperazin-1-yl]-ethanone (0.072 g, 0.18 mmol) in ethanol (1 mL) was added 4-bromo-butyric acid ethyl ester (0.030 mL, 0.21 mmol), sodium bicarbonate (0.031 g, 0.37 mmol) and potassium iodide (˜0.030 g). The resulting solution was stirred at 70° C. for 18 hours. Additional bromo-butyric acid ethyl ester (0.030 mL, 0.21 mmol) was added and the reaction was stirred at 70° C. for 18 hours. The reaction was cooled, concentrated in vacuo and purified via flash chromatography on silica gel to give the title compound (0.034 g).

Aufarbeitung

stirringthe reaction was stirred at 70° C. for 18 hours
temperatureThe reaction was cooled
concentrationconcentrated in vacuo
custompurified via flash chromatography on silica gel

Quellen und Nachweise

ORD-Eintrag: ord-5c62ce052f7a4c5586df582a6416f915
Quelldatensatz: uspto-grants-2006_08
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07098212B2

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