2-(Piperazin-1-yl)acetamide dihydrochloride → 2-{4-[(4S,5R)-2-(4-tert-Butylsulfamoyl-2-ethoxy-phenyl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl]-piperazin-1-yl}-acetamide

Participants

Reaction Steps

In a manner analogous to the method described in example 5, rac-(4S*,5R*)-2-(4-tert-butylsulfamoyl-2-ethoxy-phenyl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl chloride was reacted with 2-piperazin-1-yl-acetamide dihydrochloride (Matrix Scientific) to give the title compound as a racemic mixture. The enantiomers were then separated by supercritical fluid chromatography (Berger Instrument Multi-Gram II, Daicel ChiralPak OD-H 3×25 cm, 35° C. at 100 bar, eluting with 35% methanol in carbon dioxide). HR-MS (ES, m/z) calculated for C36H44N6O5SCl2 [(M+H)+] 743.2544, observed 743.2538.

Provenance & Evidence