Isopropanol → Isopropyl 6-chloronicotinate

Participants

Reaction Steps

Carbonyl diimidazole (18.6 g, 0.115 mol) was added to a suspension of 6-chloronicotinic acid (16.6 g, 0.105 mol) in dichloromethane (250 mL). After all of the solid had dissolved the reaction solution was stirred at ambient temperature for 1 hour and then isopropyl alcohol (100 mL) was added. The dichloromethane was removed under vacuum. A catalytic amount of sodium isopropoxide was added to the solution and the solution was heated at reflux for 1 hour. The solution was then concentrated under vacuum. The resulting residue was slurried with water and then extracted with diethyl ether. The extract was dried over magnesium sulfate and then concentrated under vacuum to provide 23.9 g of isopropyl 6-chloronicotinate.

Provenance & Evidence