Benzene → HCID 18182300, compound

Participants

Reaction Steps

16 g of aluminum chloride was added to a mixture of 8.6 g of 2-chloronicotinic acid and 120 ml of benzene in an ice bath under stirring. After stirring at room temperature for 2 hours, water and ethyl acetate were added thereto. Insoluble matters were filtered off using Celite, and the organic phase was washed with brine, dried over anhydrous magnesium sulfate and the solvent was removed. To the residue were added 100 ml of methanol and 30 ml of 28% sodium methoxide methanol solution, followed by heating under reflux overnight. After cooling as it was, the solvent was removed and the mixture was partitioned by adding water and ethyl acetate thereto. The organic phase was washed with water and brine, dried over anhydrous magnesium sulfate and the solvent was removed. To the residue were added 90 ml of diethylene glycol, 6.8 g of potassium carbonate and 4.3 ml of hydrazine mono hydrate. The mixture was heated under stirring for one hour in a 100° C. oil bath and then for 3 hours in a 170° C. oil bath. After cooling as it was, the mixture was partitioned by adding water and ethyl acetate thereto. The organic phase was washed with brine, dried over anhydrous magnesium sulfate and the solvent was removed. The residue was subjected to silica gel column chromatography and eluted with 10% ethyl acetate/hexane, to give 4.2 g of the target compound.

Provenance & Evidence