Benzenesulfonyl chloride, 3,4-dichloro- → 7-(n-Butyl)-3-[(3,4-dichlorophenyl)sulfonyl]-9,9-dimethyl-3,7-diazabicyclo[3,3,1]nonane hydrochloride

Participants

Reaction Steps

A solution of 2.8 g (=0.0114 mol) 3,4-dichlorobenzene sulfonic acid chloride in 20 ml dichloromethane was added dropwise with ice cooling to a solution of 2.4 g (=0.0114 mol) 7-(n-butyl)-9,9-dimethyl-3,7-diazabicyclo[3,3,1]nonane (=substance No. C1 in the following Table C) in 40 ml dichloromethane. Then the ice bath was removed and the reaction mixture stirred further for 3 hours at room temperature. The hydrochloride of the title compound thereby precipitated as a white precipitate. In order to complete crystallization, the reaction mixture was allowed to stand 12 more hours in a refrigerator. Then the crystals were separated by suction filtration and dried at 60° C. in a vacuum drier. 3.3 g 7-(n-butyl)-3-[(3,4-dichlorophenyl)sulfonyl]-9,9-dimethyl-3,7-diazabicyclo[3,3,1]nonane hydrochloride with a melting point of 170°-173° C. were obtained.

Provenance & Evidence