Methanamine, N-methoxy-, hydrochloride (1:1) → N,2-dimethoxy-N-methyl-2-(4-(2-methyl-2H-tetrazol-5-yl)phenyl)acetamide

関与物質

反応手順

To a solution of 2-methoxy-2-(4-(2-methyl-2H-tetrazol-5-yl)phenyl)acetic acid (0.87 g, 3.5 mmol) in anhydr CH2Cl2 (10 ml) was added N,N-diisopropylethylamine (1.36 g, 10.5 mmol) while cooling over an ice bath. bis(2-Methoxyethyl)aminosulfur trifluoride (0.93 g, 4.2 mmol) was added and stirred 15 min. N,O-Dimethylhydroxylamine HCl (0.512 g, 5.25 mmol) was added and the mixture was allowed to stir overnight while warming to room temp. Saturated aqueous NaHCO3 (15 ml) was added and stirred for 5 min. The organic layer was dried over Na2SO4 and evaporated to dryness. Purification by chromatography (60% EtOAc-hexanes) gave N,2-dimethoxy-N-methyl-2-(4-(2-methyl-2H-tetrazol-5-yl)phenyl)acetamide as a clear oil (0.425 g, 42% yield).

情報源と証拠