EP2451789A1 - MANUFACTURE OF 4-((1R,3S)-6-CHLORO-3-PHENYL-INDAN-1-YL)-1,2,2-TRIMETHYL-PIPERAZINE AND 1-((1R,3S)-6-CHLORO-3-PHENYL-INDAN-1-YL)-3,3-DIMETHYL-PIPERAZINE