Benzylethanolamine → Tert-butyl 2-(benzyl (2-hydroxyethyl)amino)acetate

Beteiligte Stoffe

Reaktionsschritte

To a solution of Compound 2 (1.86 g, 12.3 mmol) and potassium carbonate (1.70 g, 12.3 mmol) in CH3CN anhydrous (50 mL) at 0° C. was dropwise added t-Butyl-bromoacetate (2.41 g, 12.4 mmol) over 45 minute. The reaction mixture was gradually warmed to room temperature and stirred for 66 h. The resulting reaction mixture was filtered, and the filtrate was concentrated to give a white oily compound. The residue was then dissolved in CH2Cl2 (50 mL), and the resulting solution was filtered, and the filtrate was concentrated to afford white Compound 4 (2.94 g, 90%), 1H NMR (CDCl3) δ 1.45 (s, 9H), 2.86 (t, 2H), 3.23 (s, 2H), 3.54 to 3.62 (m, 2H), 3.82 (s, 2H), 7.23 to 7.34 (m, 5H); 13C NMR (CDCl3) δ 28.00, 55.27, 26.52, 58.47, 58.84, 81.29, 127.28, 128.36, 128.81, 138.27, 171.02. HRMS (Positive ion FAB) Calcd for C15H24NO3 [M+H]+ m/z 266.3605. Found: [M+H]+ m/z 266.1756.

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