Hydrochloric Acid → 2-n-butylsulfonylamino-5-[4,5-dihydropyridazin-3(2H)-on-6-yl]indane

Participants

Reaction Steps

6.3 g of n-butanesulfonyl chloride was added under ice cooling to 5.61 g of 2-amino-5-[4,5-dihydropyridazin-3(2H)-on-6-yl]indane and 4.1 g of triethyl amine suspended in 50 ml of chloroform, and the mixture was stirred for 1 hour. Diluted hydrochloric acid was added to the reaction mixture, the chloroform layer was collected by separation, washed and dried, and then the solvent was removed. The resulting crystals were recrystallized from tetrahydrofuran-isopropyl ether to obtain 6.40 g of 2-n-butylsulfonylamino-5-[4,5-dihydropyridazin-3(2H)-on-6-yl]indane.

Provenance & Evidence