Process and intermediates for the synthesis of 8-{1-(3,5-bis-(trifluoromethyl)phenyl)-ethoxy}-methyl-8-phenyl-1,7-diaza-spiro4.5decan-2-one compounds

摘要

This application discloses a process to synthesize 8-({1-(3,5-Bis-(trifluoromethyl)phenyl)-ethoxy)-methyl]-8-pheny-1,7-diazaspiro[4.5]decan-2-one comprising reacting a compound of the Formula 27a-sulfonate with zinc in the presence of acetic acid.