[F:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[N:10]=[CH:9][C:8]([O:12][C:13]1[C:14]([C:19]([CH3:23])([CH3:22])[CH:20]=[O:21])=[N:15][CH:16]=[CH:17][CH:18]=1)=[CH:7]2.[CH3:24][Mg]Cl.O>O1CCCC1>[F:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[N:10]=[CH:9][C:8]([O:12][C:13]1[C:14]([C:19]([CH3:23])([CH3:22])[CH:20]([OH:21])[CH3:24])=[N:15][CH:16]=[CH:17][CH:18]=1)=[CH:7]20.10 g of 2-[3-(8-fluoro-quinolin-3-yloxy)-pyridin-2-yl]-2-methyl-propioaldehyde were dissolved in 3 ml of tetrahydrofuran. 0.2 ml of a 3.0 M tetrahydrofuran solution of methylmagnesium chloride were added thereto followed by stirring for 30 minutes at 0° C. Subsequently, water was added thereto to stop the reaction. The resultant was then extracted with ethyl acetate followed by distilling off the solvent of the organic layer and purifying by silica gel column chromatography to obtain 0.07 g of 3-[3-(8-fluoro-quinolin-3-yloxy)-pyridin-2-yl]-3-methyl-butan-2-ol.
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