[Cl:1][C:2]1[C:6]([C:7](OC)=[O:8])=[C:5]([C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[S:4][N:3]=1.[H-].[H-].[H-].[H-].[Li+].[Al+3]>O1CCCC1>[Cl:1][C:2]1[C:6]([CH2:7][OH:8])=[C:5]([C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[S:4][N:3]=1Into a 25-mL round-bottom flask (1 atm) purged and maintained with an inert atmosphere of nitrogen, was placed methyl 3-chloro-5-(4-methoxyphenyl)-1,2-thiazole-4-carboxylate (450 mg, 1.59 mmol, 1.00 equiv), tetrahydrofuran (25 mL). This was followed by the addition of LAH (90 mg, 2.37 mmol, 1.50 equiv), in portions at 0° C. The resulting solution was stirred for 30 min at 0° C. in a water/ice bath. The reaction was then quenched by the addition of 2 mL of MeOH. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (20/80). This resulted in 223 mg (55%) of [3-chloro-5-(4-methoxyphenyl)-1,2-thiazol-4-yl]methanol as a light yellow solid.
Wird geladen…
