反应详情

2-Methyl-propane-1,2-diamine (2.00 g, 22.7 mmol, 2.38 mL, 1.1 eq.) was placed in CH2Cl2 (100 mL). Mesyl chloride (2.35 g, 20.7 mmol, 1.59 mL, 1.0 eq.) was added over a period of five minutes followed by triethylamine (6.27 g, 62.1 mmol, 8.71 mL, 3.0 eq.). The reaction was stirred for 30 minutes and then concentrated under reduced pressure. Purification by basic alumina chromatography using a gradient of 0-15% MeOH/CH2Cl2 as the eluting solvent to obtain N-(2-amino-2-methyl-propyl)-methanesulfonamide as a white solid (1.15 g, 33%). LCMS (m/e) 167 (M+1); 1H-NMR (CDCl3, 400 MHz) δ 2.98 (s, 3H), 2.95 (s, 2H), 1.17 (s, 3H), 1.16 (s, 3H).

1. concentrationconcentrated under reduced pressure
2. customPurification by basic alumina chromatography