Réaction #41572

Équation de réaction

pyridine-2-carboxaldehyde

nitrobenzene

4-(2-cyano-phenoxy)-5-(6-methanesulfonyl-pyridin-3-yloxy)-benzene-1,2-diamine

→

compound

5-(2-cyano-phenoxy)-2-pyridin-2-yl-6-(6-methanesulfonyl-pyridin-3-yloxy)-1H-benzimidazole

Solvants

methanol

Conditions de réaction

Traitement

1. 1
   Autreobtained in (step 5)
2. 2
   Autrethe reaction liquid
3. 3
   AutreThe solvent was evaporated away under reduced pressure
4. 4
   Autrethe resulting residue was purified through silica gel column chromatography (developing solvent: chloroform/methanol=20/1)
5. 5
   Autrethrough partitioning thin-layer chromatography (Kieselgel™ 60F254, Art 5744 (by Merck), chloroform/methanol=15/1)

Mode opératoire

0.007 ml of pyridine-2-carboxaldehyde and 0.5 ml of nitrobenzene were added to a methanol (1 ml) solution of 37 mg of 4-(2-cyano-phenoxy)-5-(6-methanesulfonyl-pyridin-3-yloxy)-benzene-1,2-diamine obtained in (step 5), and the reaction liquid was stirred overnight at 120° C. The solvent was evaporated away under reduced pressure, and the resulting residue was purified through silica gel column chromatography (developing solvent: chloroform/methanol=20/1) and through partitioning thin-layer chromatography (Kieselgel™ 60F254, Art 5744 (by Merck), chloroform/methanol=15/1) to obtain the entitled compound as a brown solid.

Source