Acetonitrile → HCID 9888392, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 600 g of 8-[3-(4-piperidinyl)-1-oxopropyl]-1,2,5,6-tetrahydro-4H-pyrrolo[3,2,1-ij]quinoline-4-one, 6 L of acetonitrile, 0.3 L of water, 345 g (1.3 equivalent) of potassium carbonate and 278 g (1 equivalent) of 3-fluorobenzyl chloride was stirred at about 55° C. and 12 L of water was added dropwise thereto over about 20 minutes while maintaining about 45° C. The mixture was stirred at about 55° C. for 1.5 hours, and at about 20° C. for 3 hours. Precipitated crystals were separated, and washed with 15 L of water. The wet crystals were suspended in 8.0 L of 10% hydrous methanol-denatured ethanol. The material was dissolved at about 70° C., and passed through a dust-removing filter. The filtrate was stirred at about 20° C. for 1.5 hours, 6.9 L of water was added thereto, and the mixture was stirred at about 20° C. for 3 hours. Crystals were separated, washed with 1.8 L of 50% hydrous methanol-denatured ethanol twice and dried to obtain 0.71 kg (yield 88%) of the desired compound as crystals.

Provenance & Evidence