PROCESSES FOR THE MANUFACTURE OF 3-{4-METHYL-5- (IR) -1- (2- (3-METHYLPHENYL) -2H-TETRAZOL-5-YL) -ETHOXY-4H- 1,2, 4TRIAZOL-3-YL} -PYRIDINE, 4-METHYL-3-METHYLTHIO-5- (3- PYRIDYL)-L,2,4-TRIAZOLE, AND (IR) -1- 2- (3-METHYLPHENYL) -2H- TETRAZOL-5-YLETHANOL

摘要

The present invention provides a process for the manufacture of the compound 3-{4-methyl-5-[(1R)-1-(2-(3-methylphenyl-2H-tetrazol-5-yl)-ethoxy]-4H-[1,2,4]triazol-3-yl}-pyridine of formula 14 wherein a) the compound 3-(5-methanesulfonyl-4-methyl-4H-1,2,4-triazol-3-yl)-pyridine of formula 6 and the compound (1R)-1-[2-(3-methylphenyl)-2H-tetrazol-5-yl] ethanol of formula 13 are dissolved in an aprotic solvent, whereafter an alkoxide base is added, providing the compound of formula 14. The invention also provides methods for manufacturing 3-(5-methanesulfonyl-4-methyl- 4H-1,2,4-triazol-3-yl)-pyridine and (1R)-1-[2-(3-methylphenyl)-2H-tetrazol-5-yl] ethanol.