Fumaric Acid → N-cyclopropyl-6-[4-[(3-chlorophenyl)phenylmethyl]-1-piperazinyl]hexanesulfonamide fumarate

Participants

Reaction Steps

N-Cyclopropyl-6-[4-[(3-chlorophenyl)phenylmethyl]-1-piperazinyl]hexanesulfonamide (13.03 g, 26.59 mmol) prepared in the same manner as in Example 1 was dissolved in ethanol (100 ml). Fumaric acid (4.01 g, 34.55 mmol) was added thereto. After dissolving the mixture with heating, the mixture was cooled in an ice bath to allow the mixture to crystallize. The crystals were filtered, washed with a small amount of ethanol, and dried at 80° C. in vacuo, to give N-cyclopropyl-6-[4-[(3-chlorophenyl)phenylmethyl]-1-piperazinyl]hexanesulfonamide fumarate (15.11 g) as colorless prisms (yield based on N-cyclopropyl-6-[4-[(3-chlorophenyl)phenylmethyl]-1-piperazinyl]hexanesulfonamide: 93.7%).

Provenance & Evidence