C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 213/10 (2006.01) C07C 209/88 (2006.01) C07C 211/46 (2006.01) C07C 211/52 (2006.01) C07C 215/70 (2006.01)
Patent
CA 2302011
A process for enhancing the purity of 2R-[1-hydroxy-1-trifluoromethyl-3- cyclopropylpropyn-2-yl]-4-chloroaniline comprising the formation of an acid addition salt which is capable of rejecting the racemate in the selected organic solvent.
L'invention concerne un procédé destiné à améliorer la pureté optique de 2R-[1-hydroxy- 1-trifluorométhyl- 3-cyclopropylpropyn-2-yl] -4-chloro-aniline. Ce procédé consiste à cristalliser sélectivement le sel d'addition acide à partir d'un racémate, au moyen d'un solvant organique approprié.
Chen Cheng Yi
Grabowski Edward J.j.
Reider Paul J.
Tan Lushi
Tillyer Richard D.
Merck & Co. Inc.
Merck Sharp & Dohme Corp.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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