Dimethylformamide → HCID 69585794, Verbindung

HRID 889896Notizen

Reaktionsgleichung

[Cl:1][C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[CH:8]=[C:9]([C:11](=[S:13])[NH2:12])[S:10][C:3]=12.CN(C=O)C.Cl[CH:20]([C:26]([CH3:28])=O)[C:21]([O:23][CH2:24][CH3:25])=[O:22]>C1COCC1>[CH2:24]([O:23][C:21]([C:20]1[S:13][C:11]([C:9]2[S:10][C:3]3[C:4](=[N:5][CH:6]=[CH:7][C:2]=3[Cl:1])[CH:8]=2)=[N:12][C:26]=1[CH3:28])=[O:22])[CH3:25]

Komponenten

Reaktionsbedingungen

Temperatur: 80 °C

Versuchsvorschrift

19.5 g (85.6 mmol) of 7-chloro-thieno[3,2-b]pyridine-2-carbothioic acid amide was added to 160 mL of a 1:1 DMF:THF solution mixture and cooled to 0° C. To this solution was slowly added 17.7 mL (128 mmol) of ethyl 2-chloroacetoacetate. After addition, the reaction was heated to 80° C. for sixteen hours. The reaction was cooled to room temperature and extracted with dichloromethane and water. The organic layer was separated and dried over magnesium sulfate, filtered, concentrated and purified by silica gel chromatography to afford 2-(7-Chloro-thieno[3,2-b]pyridin-2-yl)-4-methyl-thiazole-5-carboxylic acid ethyl ester (15.6 g) in 54% yield. C14H11ClN2O2S2: APCI m/z 339.1/341.0 (pos.); 1H NMR (CDCl3): δ 8.68 (d, 1H , J=5.4 Hz), 8.24 (s, 1H), 7.51 (d, 1H, J=5.4 Hz), 4.36 (q, 2H, J=7.1 Hz), 2.77 (s, 3H), 1.38 (t, 3H, J=7.1 Hz) ppm.

Aufarbeitung

additionAfter addition
temperatureThe reaction was cooled to room temperature
extractionextracted with dichloromethane and water
customThe organic layer was separated
dry with materialdried over magnesium sulfate
filtrationfiltered
concentrationconcentrated
custompurified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag: ord-ae94746106f24abbab2665600e567b57
Quelldatensatz: uspto-grants-2006_02
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US06995171B2

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