Reaktion #166650

Reaktionsgleichung

diisopropylethylamine

3-Methoxy-1-((6-methylpyridin-3-yl)methyl)-1H-indazol-4-amine

7-(2-methoxyethoxy)imidazo[1,2-a]pyridine-3-carboxylic acid

oxalyl chloride

→

N-(3-methoxy-1-((6-methylpyridin-3-yl)methyl)-1H-indazol-4-yl)-7-(2-methoxyethoxy)imidazo[1,2-a]pyridine-3-carboxamide

Ausbeute 49.0%

Lösungsmittel

water DCM

DMF

DCM

DCM

DCM

Reaktionsbedingungen

Aufarbeitung

1. 1
   Filtrationthe organic layer was filtered through glass fiber
2. 2
   Filtrationfilter paper
3. 3
   Einengenconcentrated under reduced pressure
4. 4
   Sonstigepurified by silica gel chromatography (3% MeOH in DCM)

Vorschrift

A suspension of 7-(2-methoxyethoxy)imidazo[1,2-a]pyridine-3-carboxylic acid (Example 1, Steps A-D; 0.014 g, 0.059 mmol) and 2M oxalyl chloride in DCM solution (0.033 mL, 0.065 mmol) were suspended in DCM (1 mL) with a catalytic amount of DMF. 3-Methoxy-1-((6-methylpyridin-3-yl)methyl)-1H-indazol-4-amine (0.016 g, 0.059 mmol) in DCM (1 mL) was added, followed by diisopropylethylamine (0.012 mL, 0.071 mmol). The mixture was stirred overnight and then was in water-DCM, the organic layer was filtered through glass fiber filter paper, concentrated under reduced pressure and purified by silica gel chromatography (3% MeOH in DCM) to give N-(3-methoxy-1-((6-methylpyridin-3-yl)methyl)-1H-indazol-4-yl)-7-(2-methoxyethoxy)imidazo[1,2-a]pyridine-3-carboxamide (0.014 mg, 49% yield) as a beige solid. MS (APCI) m/z=487 (M+H).

Quelle