Hydrochloric Acid → HCID 86672051, Verbindung

HRID 1261760

Reaktionsgleichung

[C:1]1([NH:7][C:8]2[C:13]([C:14](=[O:16])[CH3:15])=[CH:12][CH:11]=[CH:10][N:9]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.C[O-].[Na+].[CH:20]([C:22]1[CH:31]=[CH:30][C:25]([C:26]([O:28][CH3:29])=[O:27])=[CH:24][CH:23]=1)=O.Cl>CO.O>[CH3:29][O:28][C:26](=[O:27])[C:25]1[CH:30]=[CH:31][C:22](/[CH:20]=[CH:15]/[C:14](=[O:16])[C:13]2[C:8]([NH:7][C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)=[N:9][CH:10]=[CH:11][CH:12]=2)=[CH:23][CH:24]=1

Komponenten

Reaktionsbedingungen

Temperatur: 25 °C

Versuchsvorschrift

A solution of 1-(2-phenylamino-pyridin-3-yl)-ethanone (2.13 g, 10.0 mmol) in methanol (42 mL, 0.24M) was treated with sodium methoxide (25% wt. solution methanol, 4.6 mL, 20.1 mmol) and methyl 4-formylbenzoate (2.04 g, 12.4 mmol). The reaction was stirred at 25° C. over 3 d. At this time, the reaction was diluted with water (100 mL), acidified with a 1N aqueous hydrochloric acid solution, and extracted with a 10% methanol/methylene chloride solution. The combined organics were dried over magnesium sulfate, filtered, rinsed with methylene chloride, and concentrated onto silica gel in vacuo. Flash chromatography (AnaLogix Intelliflash 280, 80 g silica gel column, 20% ethyl acetate/hexanes) afforded 4-[(E)-3-oxo-3-(2-phenylamino-pyridin-3-yl)-propenyl]-benzoic acid methyl ester (3.43 g, 95%) as an orange solid.

Aufarbeitung

extractionextracted with a 10% methanol/methylene chloride solution
dry with materialThe combined organics were dried over magnesium sulfate
filtrationfiltered
washrinsed with methylene chloride
concentrationconcentrated onto silica gel in vacuo

Quellen und Nachweise

ORD-Eintrag: ord-54dfa5cfaff0455c897d50ca211024d6
Quelldatensatz: uspto-grants-2013_06
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08471027B2

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