PROCESS FOR THE PREPARATION OF 1-(3-METHYL-1-PHENYL-1H-PYRAZOL-5-YL)PIPERAZINE

摘要

The present invention provides a process for the preparation of 1-(3-methyl-1- phenyl-1H-pyrazol-5-yl)piperazine of Formula III, or salts thereof. The invention also provides a process for the preparation of {(2S,4S)-4-[4-(3-methyl-1-phenyl-1H-pyrazol-5- yl)piperazin-1-yl]pyrrolidin-2-yl}(1,3-thiazolidin-3-yl)methanone of Formula II, or salts thereof, using the 1-(3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazine of Formula III, or salts thereof.