Water → {4'-[4-(4-Dimethylsulfamoyl-piperazin-1-ylmethyl)-phenylcarbamoyl]-6-trifluoromethoxy-biphenyl-3-yl}-carboxylic acid tert-butyl ester

Participants

Reaction Steps

A mixture of 5′-tert-butoxycarbonylamino-2′-trifluoromethoxy-biphenyl-4-carboxylic acid (300 mg), 4-(4-amino-benzyl)-piperazine-1-sulfonic acid dimethylamide (226 mg), EDAC (144 mg) and HOBT (103 mg) in dry DMF (3 ml) containing N-methyl morpholine (0.166 ml) was stirred for 16 h. The mixture was then added to water (12 ml) and the resulting solid collected by filtration and dried and used in the following step without purification (558 mg)

Provenance & Evidence