Pyridine → HCID 20229455, compound

Participants

Reaction Steps

5.06 Grams of 6-hydroxy-7-(3-chloropropionyl)-3,4-dihydrocarbostyril and 1.8 g of anhydrous pyridine were mixed with 50 ml of dimethylformamide. Then the mixture was cooled with ice and 2.5 g of methanesulfonyl chloride was added to the mixture and stirred at a room temperature for 3 hours. The reaction mixture was poured into 100 ml of a saturated sodium chloride solution and extracted with chloroform. The chloroform layer was washed with water, dried and chloroform was removed by distillation under a reduced pressure to obtain a residue. The residue was crystallized by adding 80 ml of hexane to obtain crude crystals. The crude materials were collected by filtration and were recrystallized from ethanol to obtain 4.5 g of 6-methylsulfonyloxy-7-(3-chloropropionyl)-3,4-dihydrocarbostyril in white crystals.

Provenance & Evidence