反応 #103897
関連文献 (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US08536173B2
反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
実験手順: 14.37 g of tert-butyl ester of 4-cyclopropanesulfonyl-piperazine-1-carboxylic acid is put in a 2-liter three-necked flask, under nitrogen atmosphere. 412 ml of dichloromethane is added. The reaction mixture is cooled in an ice bath and 4M hydrochloric acid in solution in dioxane is added dropwise. The reaction mixture is allowed to return gradually to room temperature. The reaction mixture is stirred for 2.5 h, then evaporated and concentrated. The residue is taken up in a small amount of ethyl ether, triturated and then filtered and dried. 10.25 g of 1-cyclopropanesulfonyl-piperazine hydrochloride is obtained in the form of a white powder. The reaction mixture is cooled in an ice bath to return gradually to room temperature evaporated concentrated triturated filtered dried
ソース ID: ord-c0aed84e6a2e497a82082a0e17100396