2-Methoxyethylamine → N-(2-methoxyethyl)methanesulfonamide

To a stirred solution of 2-methoxyethylamine (2.67 mL, 31.0 mmol) in anhydrous methylene chloride (100 mL) and N,N-diisopropylethyl amine (8.54 mL, 51.7 mmol) at 0° C. was slowly added methanesulfonyl chloride (2.0 mL, 25.8 mmol). The reaction mixture was slowly warmed to room temperature and stirred overnight. The mixture was concentrated and the residue was purified by silica gel column chromatography (0-100% ethyl acetate in hexanes) to afford the product as a colorless oil (2.8 g, 71%). 1H NMR (300 MHz, CDCl3) δ 4.66 (br s, 1H), 3.54 (t, 2H, J=4.8 Hz), 3.39 (s, 3H), 6.37-3.29 (m, 2H), 3.00 (s, 3H).